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155589-15-4

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155589-15-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155589-15-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,5,8 and 9 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 155589-15:
(8*1)+(7*5)+(6*5)+(5*5)+(4*8)+(3*9)+(2*1)+(1*5)=164
164 % 10 = 4
So 155589-15-4 is a valid CAS Registry Number.

155589-15-4Relevant articles and documents

Lipase mediated hydrolysis of rapamycin 42-hemisuccinate benzyl and methyl esters

Adamczyk, Maciej,Gebler, John C.,Mattingly, Phillip G.

, p. 1019 - 1022 (2007/10/02)

Benzyl and methyl esters of rapamycin 42-hemisuccinate were hydrolyzed under very mild conditions to the rapamycin hemisuccinate using lipase from Pseudomonas sp. This selective deprotection was performed on a ≥100 mg scale for both esters resulting in 50% isolated yield from the methyl ester and 29% from the benzyl ester of the desired acid.

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