224427-51-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 224427-51-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,4,4,2 and 7 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 224427-51:
(8*2)+(7*2)+(6*4)+(5*4)+(4*2)+(3*7)+(2*5)+(1*1)=114
114 % 10 = 4
So 224427-51-4 is a valid CAS Registry Number.
224427-51-4Relevant articles and documents
Synthesis of benzo[5,6]cyclohepta[b]indol-6-one derivatives
Joseph, Benoit,Alagille, David,Rousseau, Cyril,Merour, Jean-Yves
, p. 4341 - 4352 (1999)
An effective synthesis of 5,6,11,12- tetrahydrobenzo[5,6]cyclohepta[b]indole-6-ones 2 was reported. Reactivity studies of the compound 2a led us to the preparation of 11-substituted derivatives 9.13 via the palladium-mediated cross-coupling reactions or a