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1028795-73-4

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1028795-73-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1028795-73-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,8,7,9 and 5 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1028795-73:
(9*1)+(8*0)+(7*2)+(6*8)+(5*7)+(4*9)+(3*5)+(2*7)+(1*3)=174
174 % 10 = 4
So 1028795-73-4 is a valid CAS Registry Number.

1028795-73-4Downstream Products

1028795-73-4Relevant articles and documents

Efficient synthesis of a sialic acid α(2→3)galactose building block and its application to the synthesis of ganglioside GM3

Liu, Yunpeng,Ruan, Xiaohong,Li, Xiangpeng,Li, Yingxia

, p. 4287 - 4290 (2008/09/20)

(Chemical Equation Presented) Glycosylation of various galactose derivatives with O-acetylated sialic acid N-phenyltrifluoroacetimidate as the donor was investigated. Efficient α(2,3)sialylation of galactose, with up to 73% yield and 8.4:1 stereoselectivity, was realized when 2,3,4-unprotected galactose derivatives and TBSOTf were used as acceptors and promoter, respectively. Sialylation of 2-(trimethylsilyl)ethyl 6-O-tert- butyldiphenylsilyl-β-D-galactopyranoside (3f) gave the best result, and the resultant Neu5Ac α(2→3)Gal disaccharide was successfully used in the synthesis of ganglioside GM3.

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