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Quantitative analysis of berberine in urine samples by chemical ionization mass fragmentography

✍ Scribed by Hiroshi Miyazaki; Etsuko Shirai; Masataka Ishibashi; Kunihiro Niizima; Yusuke Kamura


Book ID
108334529
Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
464 KB
Volume
152
Category
Article
ISSN
1873-3778

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A method for assay of urinary dhydroxymelatonin, the major metabolite of the pineal hormone melatonin is described. After addition of an internal standard of deuterated 6hydroxymelatonin sulfate, human mine was hydrolyzed enzymatically and free dhydroxymelatonin extracted, reacted to form a stable t