643745-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 643745-33-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,3,7,4 and 5 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 643745-33:
(8*6)+(7*4)+(6*3)+(5*7)+(4*4)+(3*5)+(2*3)+(1*3)=169
169 % 10 = 9
So 643745-33-9 is a valid CAS Registry Number.
643745-33-9Relevant articles and documents
A Practical Parallel Synthesis of 2-Substituted Indolizines
Chai, Wenying,Kwok, Annette,Wong, Victoria,Carruthers, Nicholas I.,Wu, Jiejun
, p. 2086 - 2088 (2007/10/03)
A practical parallel synthesis of 2-substituted indolizines 4 via phase-separation techniques is reported. Their further transformation into indolizidines 5 is also described.
