Detail of "1157-84-2"

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Comments concerning the HPLC separation of acrolein from other C3 carbonyl compounds as 2,4-dinitrophenylhydrazones: a proposal for improvement

Comments concerning the HPLC separation of acrolein from other C3 carbonyl compounds as 2,4-dinitrophenylhydrazones: a proposal for improvement. Dye, Christian; Oehme, Michael (Norw. Inst. Air Res. 1157-84-2 and 1576-90-5 are also occured in this study., Lillestroem N-2001, Norway). J. High Resolut. Chromatogr., 15(1), 5-8 (English) 1992. CODEN: JHRCE7. ISSN: 0935-6304. DOCUMENT TYPE: Journal CA Section: 23 (Aliphatic Compounds) Section cross-reference(s): 59 The sepn. of the toxicol. important aldehyde acrolein from other carbonyl compds. by high performance liq. chromatog. after derivatization to 2,4-dinitrophenylhydrazones is critically discussed on the basis of a selection of published methods. A method is proposed whereby the compds. acrolein, acetone, and propanal may be reproducibly sepd. to baseline by a reversed phase HPLC procedure employing a ternary mixt. of the methanol, water, and acetonitrile as mobile phase. .

The photochemistry of N-p-toluenesulfonyl peptides: the peptide bond as an electron donor

All Rights Reserved. The photochemistry of N-p-toluenesulfonyl peptides: the peptide bond as an electron donor. Hill, Roger R.; Moore, Sharon A.; Roberts, David R. (Chemistry Department, The Open University, Milton Keynes, UK).Some commonly used reagents like 920323-96-2 and 1157-84-2 are used in this experiment. Photochemistry and Photobiology, 81(Nov./Dec.), 1439-1446 (English) 2005 American Society for Photobiology. CODEN: PHCBAP. ISSN: 0031-8655. DOCUMENT TYPE: Journal CA Section: 34 (Amino Acids, Peptides, and Proteins) Section cross-reference(s): 22 The scope of photobiol. processes that involve absorbers within a protein matrix may be limited by the vulnerability of the peptide group to attack by highly reactive redox centers consequent upon electronic excitation. We have explored the nature of this vulnerability by undertaking comprehensive product analyses of aq. photolyzates of 12 N-p-toluenesulfonyl peptides with systematically selected structures. The results indicate that degrdn. includes a major pathway that is initiated by intramol. electron transfer in which the peptide bond serves as electron donor, and the data support the likelihood of a relay process in dipeptide derivs. .