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156643-87-7

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156643-87-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156643-87-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,6,4 and 3 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 156643-87:
(8*1)+(7*5)+(6*6)+(5*6)+(4*4)+(3*3)+(2*8)+(1*7)=157
157 % 10 = 7
So 156643-87-7 is a valid CAS Registry Number.

156643-87-7Relevant articles and documents

NEW SYNTHESIS OF POLYFUNCTIONALLY SUBSTITUTED 2-MERCAPTOPYRIDINES AND FUSED PYRIDINES

Hussain, Sohair Mohamed,Sherif, Sherif Mourad,Youssef, Mohamed Mohamed

, p. 97 - 102 (2007/10/02)

Facile unequivocal syntheses of the title compounds are reported by reacting monothiomalonamide, 1a, or its anilide analogue, 1b, with α-cyanocinnamonitriles 2a-c.Chemical and spectroscopic evidences for the structures of the newly synthesized compounds are described.

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