159698-27-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159698-27-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,6,9 and 8 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 159698-27:
(8*1)+(7*5)+(6*9)+(5*6)+(4*9)+(3*8)+(2*2)+(1*7)=198
198 % 10 = 8
So 159698-27-8 is a valid CAS Registry Number.
159698-27-8Relevant articles and documents
SYNTHESIS OF PYRROLOPYRAZINO-THIENOPYRIDAZINE DERIVATIVES AND RELATED PENTACYCLIC HETEROCYCLES
Radwan, Sh. M.,Abbady, M. S.,El-Kashef, H. S.
, p. 193 - 198 (2007/10/02)
Ethyl-5-amino-3,4-diphenylthienopyridazine-6-carboxylate (1) was converted into ethyl 3,4-diphenyl-5-(1-pyrrolyl)-thienopyridazine-6-carboxylate (2).Several derivatives of the latter compound have been synthesized.Also, the synthesis of 3,4-
