Showing 1-30 of 37 results for "melting point m-nitroaniline"
Pratik Upadhyay et al.
Journal of pharmaceutical sciences, 101(5), 1843-1851 (2012-02-22)
Relationship between two polymorphs is described to be either enantiotropic or monotropic with transition temperature/transition point (T(t) ) below the melting point (T(m) ) of the lower melting form in former case and above the T(m) of the higher melting...
Nino Lomadze et al.
Organic & biomolecular chemistry, 4(9), 1755-1759 (2006-04-25)
The affinities of polyamines consisting of ethylenediamine units equipped with either one or two terminal naphthyl-, anthryl-, or acridyl units towards PolyA.PolyU as an RNA model, and Poly(dA).Poly(dT) as a DNA model are screened by measuring the melting point changes...
Hyung-Doo Park et al.
Clinical chemistry and laboratory medicine, 45(3), 346-350 (2007-03-24)
Apolipoprotein E (APOE) and choline acetyltransferase (ChAT) have been suggested as candidate genes for determining the risk of late-onset Alzheimer's disease. The aim of this study was to simultaneously detect polymorphisms in codons 112 and 158 of APOE and codon...
Naomi Ohbayashi et al.
Applied and environmental microbiology, 78(16), 5839-5844 (2012-06-12)
The clostridial collagenases G and H are multidomain proteins. For collagen digestion, the domain arrangement is likely to play an important role in collagen binding and hydrolysis. In this study, the full-length collagenase H protein from Clostridium histolyticum was expressed...
Fredrik L Nordström et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 28(5), 377-384 (2006-06-20)
Solution and solid-state properties of m-hydroxybenzoic acid have been investigated. Two polymorphs were found where the monoclinic modification exhibits a higher stability than the orthorhombic form. The solubility of the monoclinic polymorph was determined between 10 and 50 degrees C...
Florian Stempfle et al.
Macromolecular rapid communications, 34(1), 47-50 (2012-11-20)
Self-metathesis of erucic acid by [(PCy(3))(η-C-C(3)H(4)N(2)Mes(2))Cl(2)Ru = CHPh] (Grubbs second- generation catalyst) followed by catalytic hydrogenation and purification via the ester yields 1,26-hexacosanedioate (>99% purity). Polyesterification with 1,26-hexacosanediol, generated from the diester, affords polyester-26,26, which features a T(m) of 114...
H Welfle et al.
European journal of biochemistry, 204(3), 1049-1055 (1992-03-15)
The solution structure of the histone-like DNA-binding protein, HBsu, from Bacillus subtilis in 2 mM sodium cacodylate, pH 7.5, is sensitive to the ionic strength of the buffer. This was shown by circular dichroism measurements at different concentrations of sodium...
A A Alekseeva et al.
Biochemistry. Biokhimiia, 77(10), 1199-1209 (2012-11-20)
Recombinant formate dehydrogenase (FDH, EC 1.2.1.2) from soy Glycine max (SoyFDH) has the lowest values of Michaelis constants for formate and NAD+ among all studied formate dehydrogenases from different sources. Nevertheless, it also has the lower thermal stability compared to...
Ramasamy Pothiraja et al.
Dalton transactions (Cambridge, England : 2003), (4)(4), 654-663 (2009-04-22)
New Hf and Zr malonate complexes have been synthesized by the reaction of metal amides with different malonate ligands (L = dimethyl malonate (Hdmml), diethyl malonate (Hdeml), di-tert-butyl malonate (Hdbml) and bis(trimethylsilyl) malonate (Hbsml)). Homoleptic eight-coordinated monomeric compounds of the...
Jin Liu et al.
Journal of pharmaceutical sciences, 104(7), 2183-2189 (2015-05-08)
Two crystal polymorphs of 1,7-bis-(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-3,5-dione (curcumin) have been obtained by crystallization from ethanol (EtOH) solution. The polymorphs have been characterized by differential scanning calorimetry, infrared spectroscopy, and X-ray powder diffraction and shown to be the previously described forms I and...
Merita Murtola et al.
Chembiochem : a European journal of chemical biology, 11(18), 2606-2612 (2010-11-27)
Several different cationic nonapeptides have been synthesized and investigated with respect to how they can influence the thermal melting of 2'-O-methylRNA/RNA and DNA/DNA duplexes. Each peptide has a C-terminal L-phenylalanine unit and is otherwise uniformly composed of a sequence of...
Uffe V Schneider et al.
Nucleic acids research, 38(13), 4394-4403 (2010-03-27)
Twisted intercalating nucleic acid (TINA) is a novel intercalator and stabilizer of Hoogsteen type parallel triplex formations (PT). Specific design rules for position of TINA in triplex forming oligonucleotides (TFOs) have not previously been presented. We describe a complete collection...
Lu Xu et al.
Langmuir : the ACS journal of surfaces and colloids, 34(15), 4688-4694 (2018-03-23)
Langmuir monolayer self-assembled at the air-water interface represents an excellent model for studying phase transition and lipid polymorphism in two dimensions. Compared with numerous studies of phospholipid phase transitions induced by isothermal compression, there are very scarce reports on two-dimensional...
J Martínez-Serra et al.
Clinical biochemistry, 42(12), 1317-1324 (2009-05-09)
The Factor 5 Leiden mutation and the G20210A variant of Factor 2 are two important risk factors for hereditary thromboembolism. Several reports have demonstrated that homozygous carriers for C46T mutation of the Factor 12 gene is associated with a significant...
Teris A van Beek
Bioorganic & medicinal chemistry, 13(17), 5001-5012 (2005-07-05)
Ginkgolides A, B, C, J, K, L and M and bilobalide are rare terpene trilactones that have been isolated from leaves and root bark of the Chinese tree Ginkgo biloba. The structures of the highly oxidized ginkgolides were independently elucidated...
Niwat Chawachart et al.
Extremophiles : life under extreme conditions, 18(6), 1023-1034 (2014-07-31)
GH10 xylanase from Thermoascus aurantiacus strain SL16W (TasXyn10A) showed high stability and activity up to 70-75 °C. The enzyme's half-lives were 101 h, 65 h, 63 min and 6 min at 60, 70, 75 and 80 °C, respectively. The melting...
Sunje Kim et al.
The Journal of craniofacial surgery, 31(7), 2059-2062 (2020-10-02)
Polydioxanone (PDS) has been widely used in the medical field over the past 30 years. In the 2000s, PDS plate began to be used for rhinoplasty and septoplasty. However, in Asia PDS plates are not widely used due to lack...
Tamás Molnár et al.
The FEBS journal, 280(22), 5750-5763 (2013-09-17)
This paper provides evidence for the extremely high resistance of a complex of crayfish trypsin (CFT) and bovine pancreatic trypsin inhibitor (BPTI) against heating and chemical denaturing agents such as sodium dodecyl sulfate (SDS) and urea. To dissociate this complex...
Krzysztof Dobek et al.
The journal of physical chemistry. A, 116(25), 6655-6663 (2012-05-29)
Thermochromic emission shifts of 4-aminophthalimide (4-AP) dissolved in three 1-chloroalkanes, namely, 1-chloropropane, 1-chlorobutane, and 1-chlorohexane, together with fluorescence decays measured at different wavelengths, all solvents containing different small amounts of water (10(-4)-10(-2) M), are reported in a broad temperature range...
Yurii Blagoi et al.
Biopolymers, 78(5), 275-286 (2005-05-14)
Ultraviolet (UV) and infrared (IR) absorption and vibrational circular dichroism (VCD) spectroscopy were used to study conformational transitions in the double-stranded poly(rA). poly(rU) and its components-single-stranded poly(rA) and poly(rU) in buffer solution (pH 6.5) with 0.1M Na+ and different Mg2+...
K A Nielsen et al.
Scandinavian journal of clinical and laboratory investigation, 67(3), 280-290 (2007-04-25)
Genotyping of human cytochrome P450s is a pharmacogenetic approach to diagnosing inherited deficiencies in drug metabolizing enzymes that influence therapeutic responses. The P450 CYP2D6 (debrisoquine hydroxylase) metabolizes numerous antidepressants and neuroleptic agents and there is evidence of a relationship between...
Markus Meier et al.
Journal of molecular biology, 390(2), 245-261 (2009-05-09)
Interestingly, our previously published structure of the coil 1A fragment of the human intermediate filament protein vimentin turned out to be a monomeric alpha-helical coil instead of the expected dimeric coiled coil. However, the 39-amino-acid-long helix had an intrinsic curvature...
Bipin Pandey et al.
Langmuir : the ACS journal of surfaces and colloids, 28(38), 13705-13711 (2012-09-01)
This paper reports the formation of self-organized nanoporous gallium oxide by anodization of solid gallium metal. Because of its low melting point (ca. 30 °C), metallic gallium can be shaped into flexible structures, permitting the fabrication of nanoporous anodic oxide...
Łukasz Marcinkowski et al.
Analytical and bioanalytical chemistry, 407(4), 1205-1215 (2014-11-25)
Commercially available solid-phase microextraction fibers used for isolation of polar analytes are based on the adsorption phenomenon. In consequence, typical limitations bonded with analytes displacement and matrix effects are very frequent. In the present study, alternative solution is described. Polycaprolactone...
Saeed Attar et al.
Bioorganic & medicinal chemistry, 19(6), 2055-2073 (2011-02-26)
A series of 30 organic chlacones and 33 ferrocenyl (Fc) chalcones were synthesized and characterized by melting point, elemental analysis, spectroscopy ((1)H NMR and FTIR) and, in two cases, by X-ray crystallography. The biological activity of each compound (10(-4)M in...
Laura Caldinelli et al.
The Journal of biological chemistry, 280(24), 22572-22581 (2005-04-09)
Cholesterol oxidase from Brevibacterium sterolicum is a monomeric flavoenzyme catalyzing the oxidation and isomerization of cholesterol to cholest-4-en-3-one. This protein is a class II cholesterol oxidases, with the FAD cofactor covalently linked to the enzyme through the His(69) residue. In...
Atsuko Tada et al.
Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan, 46(5), 198-204 (2005-11-25)
Jojoba wax is a natural gum base used as a food additive in Japan, and is obtained from jojoba oil with a characteristically high melting point. Although the constituents of jojoba oil have been reported, the quality of jojoba wax...
Partha Bairi et al.
The journal of physical chemistry. B, 114(35), 11454-11461 (2010-08-19)
Lumichrome (L) and melamine (M) produce thermoreversible hydrogels in LM31 and LM11 compositions, but LM13 composition does not produce hydrogel (the numbers indicate the respective molar ratio of the components). The formation of thermoreversible gels is confirmed from morphology, DSC...
Liguo Song et al.
Rapid communications in mass spectrometry : RCM, 34(1), e8558-e8558 (2019-08-21)
Over the last ten years, helium direct analysis in real time time-of-flight mass spectrometry (He DART-TOFMS) has become an established technique in rapid screening of forensic drugs to decrease the time necessary to triage forensic drug cases, therefore contributing to...
Mohammed Bakir et al.
Talanta, 62(4), 781-789 (2008-10-31)
The compound di-2-thienyl ketone p-nitrophenylhydrazone (DSKNPH) melting point 168-170 degrees C was isolated in good yield from the reaction between di-2-thienyl ketone (DSK) and p-nitrophenylhydrazine in refluxing ethanol containing a few drop of concentrated HCl. Nuclear magnetic resonance studies on...

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