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158877-59-9

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158877-59-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158877-59-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,8,7 and 7 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 158877-59:
(8*1)+(7*5)+(6*8)+(5*8)+(4*7)+(3*7)+(2*5)+(1*9)=199
199 % 10 = 9
So 158877-59-9 is a valid CAS Registry Number.

158877-59-9Relevant articles and documents

A New Direct Synthesis of Tertiary N-Acyloxymethylamide Prodrugs of Carboxylic Acid Drugs

Moreira, Rui,Mendes, Eduarda,Calheiros, Teresa,Bacelo, Maria J.,Iley, Jim

, p. 7107 - 7110 (2007/10/02)

N-Alkyl-N-chloromethylamides 2, prepared from secondary amides, paraformaldehyde and chlorotrimethylsilane, react readily with carboxylate anions to generate the corresponding tertiary N-acyloxymethylamides 3 in good yield; the latter give rise to the parent carboxylic acids in aqueous media at pH 7.4 and 37 deg C with half-lives between ca. 1 min and 42 h.

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