437609-73-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 437609-73-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,7,6,0 and 9 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 437609-73:
(8*4)+(7*3)+(6*7)+(5*6)+(4*0)+(3*9)+(2*7)+(1*3)=169
169 % 10 = 9
So 437609-73-9 is a valid CAS Registry Number.
437609-73-9Relevant academic research and scientific papers
Vitamin D heterocyclic analogues. Part 1: A stereoselective route to CD systems with pyrazole rings in their side chains
Fall, Yagamare,Barreiro, Candida,Fernández, Carlos,Mouri?o, Antonio
, p. 1433 - 1436 (2007/10/03)
Efficient preparation of two vitamin D CD ring system synthons with pyrazole rings in their side chains is based on the formation of the pyrazole ring from an α-acetylenic ketone.
