Results 171 to 180 of about 14,235 (228)

Esterification of Boric Acid with 1,2-Propanediol, 3-Amino-1,2-propanediol, and (±)-3-Dimethylamino-1,2-propanediol as Studied by 11B NMR Spectroscopy

Bulletin of the Chemical Society of Japan, 1992
Abstract Ester formations of borate ion with 1,2-propanediol, 3-amino-1,2-propanediol, and (±)-3-dimethylamino-1,2-propanediol and stabilities of the formed esters were studied by 11B NMR spectroscopy. For each of the boric acid–diol systems, esters with the 1 : 1 mole ratio of borate ion and diol and with the 1 : 2 mole ratio were ...
Takao Oi   +2 more
openaire   +2 more sources

Vitrification and crystallization in the R(−)1,2-propanediol-S(+)1,2-propanediol system

Thermochimica Acta, 1995
Abstract Differential scanning calorimetry (DSC) was used to investigate the thermal behaviour of 1,2-propanediol enantiomers and to study the R(−)1,2-propanediol-S(+)1,2-propanediol phase diagram. The melting temperature of the pure enantiomers was determined as 240 K and their melting heat as 8400 J mol−1.
S. Jabrane, J.M. Létoffé, P. Claudy
openaire   +1 more source

The metabolism of 1,2-propanediol

Biochimica et Biophysica Acta, 1961
Abstract 1. 1. Lactaldehyde has been identified as the product of the oxidation of dl -1.2-propanediol by a rabbit-liver alcohol dehydrogenase preparation. 2. 2. The K s values for (a) oxidation of ethanol, l -1,2-propanediol, and d -1,2-propanediol are respectively 0.63, 3.6, and 33.3 μmoles/ml; and for (b) reduction of acetaldehyde,
openaire   +2 more sources

Microwave spectrum of 1,2-propanediol

Journal of Molecular Spectroscopy, 2009
Abstract The microwave spectrum of the sugar alcohol 1,2-propanediol (CH3CHOHCH2OH) has been measured over the frequency range 6.5–25.0 GHz with several pulsed-beam Fourier-transform microwave spectrometers. Seven conformers of 1,2-propanediol have been assigned and ab initio electronic structure calculations of the 10 lowest energy forms have been ...
F.J. Lovas   +5 more
openaire   +1 more source

1,2-Propanediol-2-Phosphate in Ascaris lumbricoides

Science, 1966
No phosphagen is present in the body-wall muscle of Ascaris lumbricoides . A stable phosphorus compound, which on the basis of its chemical reactions seems to be 1,2-propanediol-2-phosphate, constitutes more than half of the acid-soluble phosphorus compounds.
J, Kubistovà, D, Seth
openaire   +3 more sources

The production of 1,2-propanediol in ethanol treated rats

Biochemical and Biophysical Research Communications, 1985
Chronic administration of ethanol in the most commonly used experimental diet (Lieber, C. S., and DeCarli, L. M. (1976) Fed. Proceed. 35, 1232-1236) resulted in the production of 1,2-propanediol within one week of initiation of alcohol feeding. After two weeks 1,2-propanediol levels were 8.8 +/- 1.6 nmol/ml in alcohol treated animals.
J P, Casazza, R L, Veech
openaire   +2 more sources

Home - About - Disclaimer - Privacy