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19649-81-1

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19649-81-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19649-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,4 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 19649-81:
(7*1)+(6*9)+(5*6)+(4*4)+(3*9)+(2*8)+(1*1)=151
151 % 10 = 1
So 19649-81-1 is a valid CAS Registry Number.

19649-81-1Relevant articles and documents

FUSED HETEROCYCLIC COMPOUND HAVING ANTI-HCV EFFECT

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Page/Page column 225, (2010/02/15)

Disclosed is a compound represented by the formula (I) below, a pharmaceutically acceptable salt thereof, or a solvate of them. (I) (In the formula, A represents N or CH; Het represents any one of the following groups: (a), (b), (c), (d), (e), (f), (g), (h), (i), (j), (k) wherein R0 and R respectively represent a hydrogen, an optionally substituted alkyl, an optionally substituted cycloalkyl, an optionally substituted aryl or the like; R1 and R2 respectively represent a hydrogen, an optionally substituted alkyl, an optionally substituted alkenyl, an optionally substituted cycloalkyl, an optionally substituted aryl, an optionally substituted heteroaryl or the like; p is an integer of 0-3; and R3 represents an optionally substituted alkyl or the like.)

Displacement-Cyclization Reactions of Mono-substituted Hydrazines With Chloronitrobenzenes and Chloronitropyrimidines. New Routes to 8-Azapurine and Benzopyrazole Derivatives

DeFusco, A.A.,Strauss, M.J.

, p. 351 - 355 (2007/10/02)

Reactions of different chloronitrobenzenes and chloronitropyrimidines with monosubstituted hydrazines, R-NHNH2, where R is methyl, carbomethoxy and phenyl, are described.The reactivity of these hydrazines in displacement -ortho substituent cyclizations va

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