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19556-57-1

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19556-57-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19556-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,5 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19556-57:
(7*1)+(6*9)+(5*5)+(4*5)+(3*6)+(2*5)+(1*7)=141
141 % 10 = 1
So 19556-57-1 is a valid CAS Registry Number.

19556-57-1Upstream product

19556-57-1Relevant articles and documents

Reactions of 5-bromo substituted pyrimidine nucleosides with aqueous alkalies: kinetics and mechanisms.

K?ppi,L?nnberg

, p. 768 - 775 (2007/10/02)

Kinetics for the parallel and consecutive steps of the reactions of 5-bromocytidine, 5-bromouridine and its 5'-O-methyl and 2',3'-O-isopropylidene derivatives with aqueous alkalies were studied by LC. The mechanisms of the partial reactions involved are discussed.

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