Detail of "6217-68-1"

Reference

Solvent selection for countercurrent chromatography by rapid estimation of partition coefficients and application to polar conjugates of p-nitrophenol

Solvent selection for countercurrent chromatography by rapid estimation of partition coefficients and application to polar conjugates of p-nitrophenol. Conway, Walter D.; Ito, Yoichiro (Sch. Pharm., State Univ. New York, Buffalo, Amherst, NY 14260, USA). J. Liq. Chromatogr., 7(2), 275-89 (English) 1984. CODEN: JLCHD8. ISSN: 0148-3919. DOCUMENT TYPE: Journal CA Section: 66 (Surface Chemistry and Colloids) Section cross-reference(s): 21, 80 A rapid and moderately precise technique to measure partition coeffs. 7778-77-0 and 6217-68-1 which are cas registry numbers are also used here. of UV-absorbing solutes in solvent systems for countercurrent chromatog. is described and applied to p-nitrophenol and its conjugates with glucose, H2SO4 and glucuronic acid. It involves equilibration of 1 mL of each phase with solute in a narrow test tube, removal of the entire lower phase, diln. with MeOH and calcn. of the partition coeff. as the ratio of the absorbance values of each diln. at any suitable wavelength. The polar conjugates of p-nitrophenol can be sepd. by countercurrent chromatog. by using EtOAc as mobile phase and aq. KH2PO4 as stationary phase. .

The occurrence of an inducible arylsulfatase in Comamonas terrigena

The occurrence of an inducible arylsulfatase in Comamonas terrigena. Fitzgerald, J. W.; Cline, Marsha E. (Dep. Microbiol., Univ. Georgia, Athens, Ga., USA). FEMS Microbiol.Several substances are used for example 6217-68-1 which is its cas registry number. Lett., 2(4), 221-4 (English) 1977. CODEN: FMLED7. DOCUMENT TYPE: Journal CA Section: 10 (Microbial Biochemistry) When C. terrigena was cultured in a synthetic mineral medium contg. p-nitrophenyl sulfate (NPS) as S source, growth occurred after a 35-h lag and was accompanied by the increased ability of cell exts. to hydrolyze NPS and by the release from intact cells of p-nitrophenol. A S-mediated derepression mechanism for the pos. control of arylsulfatase is apparently absent in C. terrigena since the cells exhibited low activity after growth without added S or in the presence of Na2SO4 or methionine. NPS produced ~2000-fold increase in arylsulfatase activity, indicating that the enzyme is substrate-inducible. NPS was the most effective inducer and substrate for arylsulfatase compared with p-nitrocatechol sulfate, p-acetylphenyl sulfate, and L-tyrosine-O-sulfate. .