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331281-67-5

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331281-67-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 331281-67-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,2,8 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 331281-67:
(8*3)+(7*3)+(6*1)+(5*2)+(4*8)+(3*1)+(2*6)+(1*7)=115
115 % 10 = 5
So 331281-67-5 is a valid CAS Registry Number.

331281-67-5Relevant articles and documents

2-(Dimethyl (2-naphthylmethyl)silyl) ethoxy carbonate (NSEC) as a new mode of hydroxyl group protection

Bufali, Simone,Hoelemann, Alexandra,Seeberger, Peter H.

, p. 441 - 462 (2007/10/03)

2-[Dimethyl(2-naphthylmethyl)silyl]ethoxy carbonate (NSEC) is a novel protecting group to mask hydroxyl groups. NSECCl is available in three steps from chlorodimethylvinylsilane and 2-(bromomethyl)naphthalene. Introduction and removal of the NSEC group ar

para-Chlorophenyl carbonate as a versatile hydroxyl protecting group

Love,Seeberger

, p. 317 - 322 (2007/10/03)

The p-chlorophenyl carbonate (CPC) group can be readily applied and rapidly removed in the presence of various protecting groups including pivaloyl and benzoyl esters. Additionally, the CPC group is stable under a variety of glycosylation conditions and yields solely β-linked glycosides when used as a C2 participating group.

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