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1241784-90-6

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1241784-90-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1241784-90-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,1,7,8 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1241784-90:
(9*1)+(8*2)+(7*4)+(6*1)+(5*7)+(4*8)+(3*4)+(2*9)+(1*0)=156
156 % 10 = 6
So 1241784-90-6 is a valid CAS Registry Number.

1241784-90-6Upstream product

1241784-90-6Downstream Products

1241784-90-6Relevant articles and documents

Self-sacrificing acetylation observed during attempted desilylation of 1-[4-benzenesulfonyl-3-O-(tert-butyldimethylsilyl)-2-deoxy-5-O-methanesulfonyl- α-l-threo-pentofuranosyl]thymine

Shimada, Hisashi,Kubota, Yutaka,Tanaka, Hiromichi

scheme or table, p. 4253 - 4255 (2010/09/07)

Desilylation of 1-[4-benzenesulfonyl-3-O-(tert-butyldimethylsilyl)-2-deoxy- 5-O-methanesulfonyl-α-l-threo-pentofuranosyl]thymine (4) with Bu 4NF/THF, when carried out at room temperature, gave four products. Among these, there were 1-[3-O-acetyl-4-benzenesulfonyl-2-deoxy-5-O- methanesulfonyl-α-l-threo-pentofuranosyl]thymine (7) and thymine. A possible reaction mechanism is proposed, which suggests the origin of 3′-O-acetyl group of 7 and thymine as well as structures of the other two products (9a and 9b).

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