Detail of "138-89-6"

Reference

A new photometric assay for blood alcohol

A new photometric assay for blood alcohol. Kovar, J.; Schneider, J.; Skursky, L.; Dubsky, H. (Dep. Biochem., J. E. Purkyne Univ., Brno, Czech.). Anal. Biochem., 137(1), 74-9 (English) 1984. CODEN: ANBCA2. ISSN: 0003-2697. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) The proposed method for EtOH [64-17-5] detn. is based on the simultaneous oxidn. 65-45-2 and 53-84-9 are cas registry numbers of chemicals which are used as reagents here. of EtOH and redn. of 4-nitroso-N,N-dimethylaniline (I) [138-89-6] to a quinonediimine (II) [33624-86-1] in the presence of NAD [53-84-9] and horse liver alc. dehydrogenase [9031-72-5]. II formed in this reaction is coupled with salicylamide [65-45-2] and the absorbance of the resulting blue indaniline dye is measured. The new method yields identical results when compared with the currently used methods for the detn. of blood alc. (i.e., with the conventional enzymic method, Widmark's method, and gas chromatog.). Its main advantage is high sensitivity, little consumption of both enzyme and coenzyme, and the measurement in the visible range of the spectrum. .

Preparation and structure of pyrazolone azomethine dyes

Preparation and structure of pyrazolone azomethine dyes. Haensel, Wolfram (Pharm. Inst.In this study，138-89-6 is also used., Univ. Freiburg, Freiburg/Br., Ger.). Arch. Pharm. (Weinheim, Ger.), 309(11), 893-900 (German) 1976. CODEN: ARPMAS. DOCUMENT TYPE: Journal CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 28 Azomethines I (R = Ph, substituted Ph, Me; R1 = H, Me, Ph, substituted Ph) were prepd. by condensing p-Me2NC6H4NO [138-89-6] with 5-pyrazolones in the presence of piperidine or 1,4-diazabicyclo[2.2.2]octane (II) [280-57-9], and III [16851-65-3] by reaction of 1-methylisatin [2058-74-4] with p-Me2NC6H4NH2.2HCl [536-46-9] in the presence of II. NMR and IR studies showed that the configuration of I (R = Ph, R1 = H) [61799-36-8] and III is predominautly E, whereas that of I with Me or a phenyl group at C-3 is Z (shown). .