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221381-90-4

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221381-90-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221381-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,8 and 1 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 221381-90:
(8*2)+(7*2)+(6*1)+(5*3)+(4*8)+(3*1)+(2*9)+(1*0)=104
104 % 10 = 4
So 221381-90-4 is a valid CAS Registry Number.

221381-90-4Relevant articles and documents

Pyrrolidin-2-one compounds and their use as neuraminidase inhibitors

-

, (2008/06/13)

A compound having the formula: wherein all variables are as defined in the specification, for use as a neuramninidase inhibitor.

Design of benzoic acid inhibitors of influenza neuraminidase containing a cyclic substitution for the N-acetyl grouping

Brouillette, Wayne J.,Atigadda, Venkatram R.,Ming, Luo,Air, Gillian M.,Babu, Yarlagadda S.,Bantia, Shanta

, p. 1901 - 1906 (2007/10/03)

A 2-pyrrolidinone ring containing a single hydroxymethyl side chain effectively replaces the N-acetylamino group of 4-(N-acetylamino)-3- guanidinobenzoic acid, a low micromolar inhibitor of influenza neuraminidase. This novel structural template affords new opportunities to evolve more potent benzoic acid inhibitors.

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