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174487-81-1

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174487-81-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 174487-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,4,8 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 174487-81:
(8*1)+(7*7)+(6*4)+(5*4)+(4*8)+(3*7)+(2*8)+(1*1)=171
171 % 10 = 1
So 174487-81-1 is a valid CAS Registry Number.

174487-81-1Relevant articles and documents

Anti-cancer compounds

-

, (2008/06/13)

Cyclopentaquinazoline of the formula (I): STR1 wherein R1 is hydrogen, amino, C1-4 alkyl, C1-4 alkoxy, C1-4 hydroxyalkyl or C1-4 fluoroalkyl; wherein R2 is hydrogen, C1-4 alkyl, C3-4 alkenyl, C3-4 alkynyl, C2-4 hydroxyalkyl, C2-4 halogenoalkyl or C1-4 cyanoalkyl; Ar1 is phenylene, thiophenediyl, thiazolediyl, pyridinediyl or pyrimidinediyl which may optionally bear one or two substituents selected from halogeno, hydroxy, amino, nitro, cyano, trifluoromethyl, C1-4 alkyl and C1-4 alkoxy; and wherein R3 is a group of the formula: in which A1, A2, Y1 and Ar2 are defined in claim 1; or a pharmaceutically acceptable salt or ester there of are of therapeutic value particularly in the treatment of cancer.

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