143520-72-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 143520-72-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,5,2 and 0 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 143520-72:
(8*1)+(7*4)+(6*3)+(5*5)+(4*2)+(3*0)+(2*7)+(1*2)=103
103 % 10 = 3
So 143520-72-3 is a valid CAS Registry Number.
143520-72-3Relevant articles and documents
A CONVENIENT SYNTHESIS OF 1α,25-DIHYDROXY-28-NORVITAMIN-D2
Moriarty, Robert M.,Kim, Joonggon,Penmasta, Raju
, p. 3741 - 3744 (2007/10/02)
The title compound was synthesized via the Julia olefination using ring B-diene protected 3β-hydroxy-23,24-bisnorchola-5,7-diene-22-al acetate and the side-chain synthon 2-methyl-4-phenylsulfonyl-2-(tetrahydropyranyloxy)butane.Ring B-deprotection, photoly