74556-23-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74556-23-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,5,5 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 74556-23:
(7*7)+(6*4)+(5*5)+(4*5)+(3*6)+(2*2)+(1*3)=143
143 % 10 = 3
So 74556-23-3 is a valid CAS Registry Number.
74556-23-3Relevant articles and documents
Synthesis and Reactions of Coumarin-3-N-bromoarylcarboxamides
Islam, A. M.,Bedair, A. H.,Aly, F. M.,El-Sharief, A. M. Sh.,El-Masry, F. M.
, p. 224 - 226 (2007/10/02)
Various coumarin-3-N-bromoarylcarboxamides (Ia-h) have been prepared and their reactions with aliphatic amines and hydrazines studied.Some acridinyl derivatives (XIa-f) of coumarin-3-carboxamide (Ii) have also been prepared.
