Influence of Biofield Treatment on Physicochemical Properties of Hydroxyethyl Cellulose and Hydroxypropyl Cellulose

Abstract

Cellulose based polymers have shown tremendous potential as drug delivery carrier for oral drug delivery system (DDS). Hydroxyethyl cellulose (HEC) and hydroxypropyl cellulose (HPC) are widely explored as excipients to improve the solubility of poorly water soluble drugs and to improve self-life of dosage form. This work is an attempt to modulate the physicochemical properties of these cellulose derivatives using biofield treatment. The treated HEC and HPC polymer were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The XRD studies revealed a semi-crystalline nature of both the polymers. Crystallite size was computed using Scherrer’s formula, and treated HEC polymer showed a significant increase in percentage crystallite size (835%) as compared to the control polymer. This higher increase in crystallite size might be associated with greater crystallite indices causing a reduction in amorphous regions in the polymer. However treated HPC polymer showed decrease in crystallite size by -64.05% as compared to control HPC. DSC analysis on HEC polymer revealed the presence of glass transition temperature in control and treated HEC polymer. We observed an increase in glass transition temperature in treated HEC, which might be associated with restricted segmental motion induced by biofield. Nonetheless, HPC has not showed any glass transition. And no change in melting temperature peak was observed in treated HPC (T2) however melting temperature was decreased in T1 as compared to control HPC. TGA analysis established the higher thermal stability of treated HEC and HPC. CHNSO results showed significant increase in percentage oxygen and hydrogen in HEC and HPC polymers as compared to control samples. This confirmed that biofield had induced changes in chemical nature and elemental composition of the treated polymers (HEC and HPC).

Full text

Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
Research Article Open Access
Molecular Pharmaceutics &
Organic Process Research
Trivedi et al., J Mol Pharm Org Process Res 2015, 3:2
http://dx.doi.org/10.4172/2329-9053.1000126
*Corresponding author: Shrikant Patil, Trivedi Global Inc., 10624 S Eastern
Avenue Suite A-969, Henderson, NV 89052, USA, Tel: +1 602-531-5400;
E-mail: publication@trivedieffect.com
Received May 29, 2015; Accepted July 09, 2015; Published July 20, 2015
Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015)
Inuence of Bioeld Treatment on Physicochemical Properties of Hydroxyethyl
Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126.
doi:10.4172/2329-9053.1000126
Copyright: © 2015 Trivedi MK, et al. This is an open-access article distributed
under the terms of the Creative Commons Attribution License, which permits
unrestricted use, distribution, and reproduction in any medium, provided the
original author and source are credited.
Influence of Biofield Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose
Mahendra Kumar Trivedi, Gopal Nayak, Shrikant Patil*, Rama Mohan Tallapragada and Rakesh Mishra
Trivedi Global Inc., 10624 S Eastern Avenue Suite A-969, Henderson, NV 89052, USA
Abstract
Cellulose based polymers have shown tremendous potential as drug delivery carrier for oral drug delivery
system (DDS). Hydroxyethyl cellulose (HEC) and hydroxypropyl cellulose (HPC) are widely explored as excipients
to improve the solubility of poorly water soluble drugs and to improve self-life of dosage form. This work is an
attempt to modulate the physicochemical properties of these cellulose derivatives using bioeld treatment. The
treated HEC and HPC polymer were characterized by X-ray diffraction (XRD), differential scanning calorimetry
(DSC) and thermogravimetric analysis (TGA). The XRD studies revealed a semi-crystalline nature of both the
polymers. Crystallite size was computed using Scherrer’s formula, and treated HEC polymer showed a signicant
increase in percentage crystallite size (835%) as compared to the control polymer. This higher increase in crystallite
size might be associated with greater crystallite indices causing a reduction in amorphous regions in the polymer.
However treated HPC polymer showed decrease in crystallite size by -64.05% as compared to control HPC. DSC
analysis on HEC polymer revealed the presence of glass transition temperature in control and treated HEC polymer.
We observed an increase in glass transition temperature in treated HEC, which might be associated with restricted
segmental motion induced by bioeld. Nonetheless, HPC has not showed any glass transition. And no change in
melting temperature peak was observed in treated HPC (T2) however melting temperature was decreased in T1 as
compared to control HPC. TGA analysis established the higher thermal stability of treated HEC and HPC. CHNSO
results showed signicant increase in percentage oxygen and hydrogen in HEC and HPC polymers as compared to
control samples. This conrmed that bioeld had induced changes in chemical nature and elemental composition of
the treated polymers (HEC and HPC).
Keywords: Hydroxyethyl cellulose; Hydroxypropyl cellulose; XRD;
DSC; TGA; Bioeld treatment;
Abbreviation: HEC: Hydroxyethyl Cellulose; HPC: Hydroxypropyl
Cellulose; XRD: X-ray Diraction Study; DSC: Dierential Scanning
Calorimetry; TGA: ermogravimetric Analysis; DTA: Dierential
ermal Analysis; DDS: Drug Delivery System
Introduction
e oral route is by far the most preferred and convenient route for
delivery of many pharmaceutically active drugs. us, the oral mucosa
has many properties that make it a fascinating choice for drug delivery [1].
Oral drug delivery is an excellent non-invasive approach that provides
alternative to invasive routes such as intravenous, intramuscular,
subcutaneous administration of drugs. Nevertheless, it also provides
several challenges for pharmaceutical scientist investigating novel
delivery techniques to overcome. ere are dierent formulations
strategies including sprays, tablets, mouthwashes, gels, pastes and
patches are currently used for delivery into and across the oral mucosa.
DDS developed for local delivery to mucosal diseases require dierent
pharmacokinetic behavior compared to topical delivery for systemic
applications [1]. Presently, there are a small number of drugs which
are routinely delivered via the sublingual or buccal route e.g. systemic
delivery of glyceryl trinitrate for angina relief and topical corticosteroid
administration for inammatory diseases of the oral mucosa including
lichen planus [2]. Nevertheless, the formulations administered orally
face a daunting challenge by acidic pH and enzymes being produced
in the stomach. e formulation dosage form suers premature release
due to degradation of polymer in gastrointestinal pH [3] and it reduces
targeted action of the encapsulated drug. Hence, more time/pH
controlled DDS should be designed to overcome these obstacles.
Cellulose and cellulose based derivatives are accepted as natural
materials with good tolerance by the human body and are commonly
used in medical and pharmaceutical applications such as targeted
DDS [4,5]. e other important properties of cellulose polymers are
biocompatibility with tissue and blood, non-toxicity and low cost [5].
HEC is an excellent derivative of cellulose with superior water
retention and biocompatibility. It contains several –OH groups on its
structure that allows it to be chemically modied by various means
[6,7]. Recently, HEC-based swelling/oating gastroretentive DDS has
been tried for its clinical relevance in healthy volunteers [8]. e HPC
is another well-known polymer wherein few –OH group in repeating
sugar units are hydroxypropylated using propylene oxide [9]. e high
glass transition temperature of HPC confers great stability and restricts
drug diusion, recrystallization during storage. Moreover, the free –OH
group of HEC readily form the hydrogen bond with a carbonyl group
of pharmaceuticals, which provides stability in the solid state [10-12].
Nevertheless HEC and HPC matrices due to high hydrophilicity
on few instances leads to a premature release of drugs and that need
to be modulated in order to enhance its pharmaceutical applicability.
Bioeld is being generated by a human body that causes a paramount
eect on surroundings. Mr. Mahendra Trivedi is well known to change

Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015) Inuence of Bioeld Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126. doi:10.4172/2329-9053.1000126
Page 2 of 7
Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
the characteristics of various living and non-living things in controlled
research experiments through his bioeld, referred herein as Bioeld
treatment. e said Bioeld has signicantly changed the atomic,
crystalline, and thermal characteristics of various materials such as
metals, ceramics and carbon allotropes [13-20]. Recently it was reported
that the use of bioeld has signicantly improved the yield and quality
of various agricultural products [21-23]. Furthermore bioeld has
signicantly optimized antibiotic sensitivity and produced biochemical
reactions which further changed the characteristics of pathogenic
microbes [24-26]. Additionally the eects of bioeld on growth and
anatomical characteristics of the herb Pogostemon cablin used in
perfumes, in incense/insect repellents, were recently investigated [27].
In the present work, HEC and HPC polymers were treated with
Bioeld. e treated polymers were characterized by XRD, DSC, TGA
and CHNSO analysis.
Materials and Methods
e Hydroxyethyl cellulose (HEC) and hydroxypropyl
cellulose (HPC) were procured from Sigma Aldrich, USA. e HEC
and HPC powders were treated with Mr. Trivedi’s bioeld at dierent
times, and samples were subjected to polymer characterization.
Polymer samples (HEC and HPC) from one batch was divided
into three dierent parts. One was considered as a control while the
remaining two were exposed to dierent amount of Mr. Trivedi’s
bioeld at dierent time intervals and named as T1 and T2 (treated
samples). In order to avoid errors, only standardized parameters were
used for comparison.
Characterization
CHNSO analysis: e control and treated polymers (HEC and
HPC) were analyzed using CHNSO Analyzer Model Flash EA 1112
series, ermo Finnigan, Italy.
X-ray diraction (XRD) study: X-ray diraction analysis of the
polymer samples (HEC and HPC) were carried out using a power
Phillips Holland PW 1710 X-ray diractometer system. A copper
anode with nickel lter was used. e wavelength of the radiation was
1.54056 Ǻ. e data were obtained in the form of 2θ versus intensity
(a.u) chart. e crystallite size was calculated from XRD data using
following formula.
Crystallite size=kλ/b Cos θ (1)
Where λ is the wavelength and k is the equipment constant with a
value of 0.94.
Dierential scanning calorimetry (DSC): DSC (HEC and HPC)
were recorded with Pyris-6 DSC Perkin Elmer, at a heating rate of 10°C/
min with a nitrogen ow of 5 mL/min.
ermogravimetric analysis (TGA): e thermal stability of the
(HEC and HPC) was measured on a Mettler Toledo simultaneous TGA
thermogravimetric analyzer (TGA) and dierential thermal analysis
(DTA). e samples were heated from room temperature to 400°C with
a heating rate of 5°C/min under oxygen atmosphere.
Results and Discussion
CHNSO analysis
CHNSO analysis was carried out to investigate the elemental
composition in the treated HEC and HPC polymers. e CHNSO
results are presented in Table 1. e control HEC polymer showed
43.62% carbon, 7.33% hydrogen, and 28.93% oxygen. e treated HEC
showed 15.20% and 9.20% increased content of oxygen and hydrogen,
respectively as compared to control. Similarly, the treated HPC polymer
showed marked increase in percentage oxygen (7.09%) and hydrogen
and (22.40%) as compared to control. Additionally the HEC showed a
decrease in percentage nitrogen by -11.03 % but HPC did not show any
change because it does not have nitrogen on its structure. Similarly the
treated HEC polymer showed -0.19% decrease in percentage carbon as
compared to control and HPC showed 0.05% increase in percentage
carbon as compared with control polymer. is conrms that bioeld
treatment changed the elemental composition of HEC and HPC.
X-ray diraction
XRD diractogram of control and bioeld treated polymer HEC is
illustrated in Figures 1a and 1b, respectively. e X-ray diractogram
of control HEC showed typical semi-crystalline nature of the polymer
(Figure 1a). e XRD showed a peak at 2θ=24.01°. Another broad and
diused peak was observed at 2θ=44.4°. e treated HEC polymer
(Figure 1b) showed similar semi-crystalline nature with a prominent
peak at 2θ=24.56°. e XRD of HEC showed another peaks at 2θ=10.62°
and 41.71°. e crystallite size was calculated from XRD diractogram
of HEC polymer using Scherrer’s formula (kλ/b Cos θ). e crystallite
size of the control HEC polymer was 9.51 nm; however aer treatment
it was increased to 88.99 nm. It was observed that treated HEC showed
835% increase in crystallite size. is signicant improvement in
crystallite size might be due to the reason that bioeld is directly acting
on HEC molecules leading to expansion of crystals. Kim et al observed
similar results during their studies on thermal decomposition of native
cellulose; they suggested that crystallite size increases due to increase in
crystalline indices [28]. e corresponding increase in crystallite size
was due to disappearance of amorphous regions in cellulose (HEC)
reecting improvement in crystallinity. e XRD diractogram of
HPC (control and treated) polymer is showed in Figures 1c and 1d,
respectively, which conrmed coexistence of both amorphous and
crystalline regions in the HPC polymer. e XRD diractogram showed
(Figure 1c) a broad peak at 2θ=18.70° and few crystalline peaks were
observed at 2θ=29.16°, 35.77°, 39.19°, 42.99°, 47.35°. Nevertheless, the
bioeld treated HPC polymer showed (Figure 1d) a peak at 2θ=23.57°,
which showed amorphous nature of the treated polymer.
Dierential Scanning Calorimetry (DSC)
Dierential scanning calorimetry was used as an excellent technique
to measure the glass transition and melting nature of the polymer. DSC
Parameter Hydroxyethyl
cellulose
Hydroxypropyl
cellulose
Nitrogen control 0.39 0.00
Nitrogen treated 0.35 0.00
% Change in nitrogen -11.03 -
Carbon control 43.62 52.67
Carbon treated 43.53 52.70
% Change in carbon -0.19 0.05
Hydrogen control 7.33 9.02
Hydrogen treated 8.00 9.66
% Change in hydrogen 9.20 7.09
Oxygen control 28.93 23.92
Oxygen treated 33.33 29.28
% Change in oxygen 15.20 22.40
Table 1. CHNSO analysis of hydroxyethyl cellulose and hydroxypropyl cellulose.

Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015) Inuence of Bioeld Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126. doi:10.4172/2329-9053.1000126
Page 3 of 7
Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
thermogram of HEC control and treated polymer is presented in Figure
2. e control HEC polymer showed an endothermic inexion at 189°C
due to a segmental motion of the polymer molecules reecting the glass
transition temperature of HEC (Figure 2a). In general the amorphous
region present in a polymer shows the glass transition temperature. e
DSC of HEC displayed a broad endothermic peak at 278°C conrming
the melting temperature of the polymer. Aer bioeld treatment, the
DSC thermogram of HEC (T1 and T2) showed an elevation in both
glass transition and melting temperature. e glass transition was
increased to 192°C (T1) (Figure 2b) and 210°C (T2) (Figure 2c) in both
the treated HEC samples as compared to control samples.
Based on this result, we hypothesize that the bioeld is directly
acting upon the molecules and restricting the segmental motion in the
amorphous region thereby elevation in glass transition was observed.
Paradkar et al. showed that high glass transition of polymer, promotes
stability and restricts drug diusion and recrystallization during
storage; further the melt viscosity of the polymer make it suitable for
hot melt extrusion processing [9]. is conrms that treated HEC (T1
and T2) polymer might be suitable for the DDS. e HEC polymer (T1
and T2) showed an increase in melting temperature (279°C and 280°C)
reecting improved thermal stability of HEC aer bioeld treatment.
Contrarily no glass transition property was observed in DSC
thermograms of control and treated HPC polymer. e DSC
thermogram of control HPC showed (Figure 2d) an endothermic peak
at 343°C that was responsible for its melting temperature. Aer bioeld
treatment, the thermograms of HPC (T1 and T2) showed (Figure 2e)
decrease in melting temperature of T1 sample (225°C); however T2
showed (Figure 2f) similar melting peak (343°C) as showed by the
Figure 1a. X-ray diffractogram of HEC (Control).
Figure 1b. X-ray diffractogram of HEC (Treated).
Figure 1c. X-ray diffractogram of HPC (Control).
Figure 1d. X-ray diffractogram of HPC (Treated).

Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015) Inuence of Bioeld Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126. doi:10.4172/2329-9053.1000126
Page 4 of 7
Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
Figure 2a. DSC thermogram of HEC (Control).
Figure 2b. DSC thermogram of HEC (T1).
control HPC. e high melting temperature of HPC (T2) indicated that
a high amount of thermal energy was needed in order to disturb the
long-range order of the crystals.
ermogravimetric analysis (TGA)
e thermogravimetric analysis is a technique to investigate
the thermal stability of the polymers. TGA thermograms of HEC
control polymer and treated sample are shown in Figures 3a-d. TGA
thermogram of control HEC polymer exhibited one step thermal
degradation pattern (Figure 3a). Control HEC started to decompose
at 240°C (initial decomposition temperature), and it stopped at 330°C.
Figure 2c. DSC thermogram of HEC (T2).
Figure 2d. DSC thermogram of HPC (Control).
e HEC control polymer lost 43.61% of its original weight during
this process. e treated HEC polymer (T1 and T2) displayed identical
single step thermal degradation process. e polymer (T1) started to
lose its weight at 252°C and ended at 305oC. e initial decomposition
temperature (IDT) was increased in the treated HEC (T1) polymer
(252°C) (Figure 3b) which showed its higher thermal stability. However
the initial decomposition temperature was decreased in HEC (T2)
sample (232°C) (Figure 3c).

Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015) Inuence of Bioeld Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126. doi:10.4172/2329-9053.1000126
Page 5 of 7
Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
Figure 2e. DSC thermogram of HPC (T1).
Figure 2f. DSC thermogram of HPC (T2).
e TGA thermograms of HPC polymer (control) and treated
HPC are illustrated in Figures 3d-f. e control HPC polymer
showed (Figure 3d) much higher initial decomposition temperature
at 320°C and degradation terminated at 384°C. e polymer lost
56.97% of its original weight during this thermal process. e bioeld
treated HPC (T1) (Figure 3e) showed an improvement in initial
decomposition temperature (322°C) which correlates well with its
superior thermal stability. ough we observed a minimal decrease in
initial decomposition temperature of T2 sample (315°C) as compared
to control (Figure 3f). is result was well supported by our DSC
observation of the HEC and HPC.
e CHNSO results conrmed signicant increase in percentage
oxygen and hydrogen of treated HEC and HPC polymers as compared
to control samples. We presume that substantial increase in hydrogen
and oxygen elements in the polymers (HEC and HPC) might have
Figure 3a. TGA thermogram of HEC (Control).
Figure 3b. TGA thermogram of HEC (T1).
improved the hydrogen bonding. e strong hydrogen bonding may
increase the crystallinity and thermal stability of the polymers which
we have observed in treated HEC. Moreover the treated HEC had
shown increased glass transition temperature as compared to control
that might improve the drug stability in gastro retentive drug delivery
and eectively reduce the premature drug diusion from the matrix.
Hence these results conrmed that treated polymers (HEC and HPC)
could be an interesting candidate for oral targeted DDS. Furthermore,

Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015) Inuence of Bioeld Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126. doi:10.4172/2329-9053.1000126
Page 6 of 7
Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
Figure 3c. TGA thermogram of HEC (T2).
Figure 3d. TGA thermogram of HPC (Control).
a few experiments are required to investigate the potential of bioeld
treated polymers (HEC and HPC) in DDS.
Conclusion
Mr. Trivedi’s bioeld treatment had substantially improved the
physicochemical properties of HEC and HPC polymers. XRD showed
Figure 3e. TGA thermogram of HPC (T1).
Figure 3f. TGA thermogram of HPC (T2).
that treatment with bioeld had signicantly enhanced the crystallite
size by 835% in treated HEC as compared to control and possibly this
increased the crystallinity. It was presumed that enhanced crystalline
indices in treated HEC caused increase in crystalline size. DSC showed
the increase in melting temperature of treated HEC and HPC as
compared to control polymers. It was postulated that bioeld treatment

Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015) Inuence of Bioeld Treatment on Physicochemical Properties of
Hydroxyethyl Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126. doi:10.4172/2329-9053.1000126
Page 7 of 7
Volume 3 • Issue 2 • 1000126
J Mol Pharm Org Process Res
ISSN: 2329-9053 JMPOPR, an open access journal
probably assisted the formation of long range order in crystal of
polymers (HEC and HPC) which increased the melting temperature
and thermal stability. CHNSO results showed substantial increase in
percentage hydrogen and oxygen which conrmed that bioeld had
possibly induced structural changes in the treated polymers (HEC
and HPC). ermal analysis by TGA showed signicant improvement
in thermal stability of treated HEC (T1) and HPC (T1) as compared
to control. ‘We hypothesize that bioeld treatment probably caused
changes at structural and atomic level due to weak interactions in the
polymers. Based on the results the treated polymers could be used as a
matrix for oral targeted DDS.
Acknowledgements
The authors would like to thank all the laboratory staff for their assistance
during the various instrument characterization. We thank Dr. Cheng Dong of NLSC,
Institute of Physics, and Chinese Academy of Sciences for permitting us to use
Powder X software for analyzing XRD results.
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Treatment On Ginseng And Organic Blueberry Yield. Journal of Agricultural
Science 35(1): 1991-8178.
23. Lenssen AW (2013) Bioeld and Fungicide Seed Treatment Inuences on
Soybean Productivity, Seed Quality and Weed Community. Agricultural Journal
8(3): 138-143.
24. Trivedi M, Patil S (2008) Impact of an external energy on Staphylococcus
epidermis [ATCC –13518] in relation to antibiotic susceptibility and biochemical
reactions – An experimental study. Journal of Accord Integrative Medicine 4(4):
230-235.
25. Trivedi M, Patil S (2008) Impact of an external energy on Yersinia enterocolitica
[ATCC –23715] in relation to antibiotic susceptibility and biochemical reactions:
An experimental study. The Internet Journal of Alternative Medicine 6: 2.
26. Trivedi M, Bhardwaj Y, Patil S, Shettigar H, Bulbule A (2009) Impact of an
external energy on Enterococcus faecalis [ATCC – 51299] in relation to
antibiotic susceptibility and biochemical reactions – An experimental study.
Journal of Accord Integrative Medicine 5(2): 119-130.
27. Patil SA, Nayak GB, Barve SS, Tembe RP, Khan RR (2012) Impact of Bioeld
Treatment on Growth and Anatomical Characteristics of Pogostemon cablin
(Benth). Biotechnology 11: 154-162.
28. Kim UJ, Eom SH, Wada M (2010) Thermal decomposition of native cellulose:
Inuence on crystallite size. Polymer Degradation Stability 95(5): 778-781.
Citation: Trivedi MK, Nayak G, Patil S, Tallapragada RM, Mishra R (2015)
Inuence of Bioeld Treatment on Physicochemical Properties of Hydroxyethyl
Cellulose and Hydroxypropyl Cellulose. J Mol Pharm Org Process Res 3: 126.
doi:10.4172/2329-9053.1000126