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1255518-30-9

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1255518-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1255518-30-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,5,5,1 and 8 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1255518-30:
(9*1)+(8*2)+(7*5)+(6*5)+(5*5)+(4*1)+(3*8)+(2*3)+(1*0)=149
149 % 10 = 9
So 1255518-30-9 is a valid CAS Registry Number.

1255518-30-9Downstream Products

1255518-30-9Relevant articles and documents

Regioselective lipase-catalyzed acylation of 41-desmethoxy-rapamycin without vinyl esters

Storz, Thomas,Gu, Jianxin,Wilk, Bogdan,Olsen, Eric

, p. 5511 - 5515 (2010)

Selective lipase-catalyzed acylation of 41-desmethoxyrapamycin has been achieved with a quaternary carboxylic acid avoiding the use of vinyl ester activation. Among the acyl donors investigated, the novel butanedione-monooxime and the N-acetylhydroxamate ester proved to be the most efficient donors, comparable in reactivity to the undesired vinyl ester and allowing selective, preparative acylation on gram scale in excellent yields. These new donors are proposed as sustainable and process-friendly alternatives to the widely used vinyl ester substrate activation in lipase-catalyzed acylations of secondary alcohols.

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