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137063-37-7

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137063-37-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137063-37-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,6 and 3 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137063-37:
(8*1)+(7*3)+(6*7)+(5*0)+(4*6)+(3*3)+(2*3)+(1*7)=117
117 % 10 = 7
So 137063-37-7 is a valid CAS Registry Number.

137063-37-7Relevant articles and documents

Pseudoglycosyltransferase catalyzes nonglycosidic C-N coupling in validamycin a biosynthesis

Asamizu, Shumpei,Yang, Jongtae,Almabruk, Khaled H.,Mahmud, Taifo

, p. 12124 - 12135 (2011/10/09)

Glycosyltransferases are ubiquitous in nature. They catalyze a glycosidic bond formation between sugar donors and sugar or nonsugar acceptors to produce oligo/polysaccharides, glycoproteins, glycolipids, glycosylated natural products, and other sugar-containing entities. However, a trehalose 6-phosphate synthase-like protein has been found to catalyze an unprecedented nonglycosidic C-N bond formation in the biosynthesis of the aminocyclitol antibiotic validamycin A. This dedicated 'pseudoglycosyltransferase catalyzes a condensation between GDP-valienol and validamine 7-phosphate to give validoxylamine A 7′-phosphate with net retention of the 'anomeric configuration of the donor cyclitol in the product. The enzyme operates in sequence with a phosphatase, which dephosphorylates validoxylamine A 7′-phosphate to validoxylamine A.

Synthetic Studies on Antiobiotic Validamycins. Part 14. Total Syntheses of (+)-Validamycins C, D and F

Miyamoto, Yasunobu,Ogawa, Seiichiro

, p. 2121 - 2128 (2007/10/02)

(+)-Validamycins C and F were first completely synthesised by use of a common blocked derivative 5 of (+)-validoxylamine A.The diols 6 and 7, obtained by acid hydrolysis of 5, were appropriately protected to give the aglycones 17, 25 and 30, which were co

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