Isolation of isoxanthopterin from human urine
نویسندگان
چکیده
منابع مشابه
Isolation of isoxanthopterin from human urine.
The pterins xanthopterin (2-amino-4:6-dihydroxypteridine) (Koschara, 1936) and biopterin (2amino 4 hydroxy-6-[1: 2-dihydroxypropyl (L-erythro)]-pteridine) (Patterson, Saltza & Stokstad, 1956) have been isolated from human urine. It has been suggested that the pterins 2-amino-4-hydroxypteridine-6-carboxylic acid, 2-amino-4-hydroxypteridine and isoxanthopterin (2-amino-4:7-dihydroxypteridine) are...
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The quantitative determination of urinary estrogens is being applied widely as a research procedure in the study of normal and pathological conditions. Most investigators have limited their work to the estimation of total estrogenic potency, although it has been known for some time that the urine of pregnant women contains at least two estrogenic compounds, theelin and theelol. Experiments upon...
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FLEISCH, HERBERT, AND SYLVXA BISAZ. Isolation from urine of pyrophosphate, a calczjlcution inhibitor. Am. J. Physiol. 203(4) : 671-675. 1962. -The minimum value of the product, Ca x P, necessary for calcium phosphate precipitation to occur, was determined in vitro. The addition of 2.2 y0 urine to the solutions raised the mean product from 53 to 105 (mg/I oo ml)2, which shows that the urine cont...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1958
ISSN: 0306-3283
DOI: 10.1042/bj0680385a