76740-15-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76740-15-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,7,4 and 0 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 76740-15:
(7*7)+(6*6)+(5*7)+(4*4)+(3*0)+(2*1)+(1*5)=143
143 % 10 = 3
So 76740-15-3 is a valid CAS Registry Number.
76740-15-3Relevant articles and documents
Convergent synthesis of 1α-hydroxyvitamin D5
Gao, Ling-Jie,Zhao, Xu-Yang,Vandewalle, Maurits,De Clercq, Pierre
, p. 2755 - 2759 (2007/10/03)
An eleven-step, high-yielding (46%) synthesis of 1α-hydro-xyvitamin D5 (2) starting from Vitamin D2 (4) is described, in which a Julia olefination sequence is used for the construction of the (24R)-ethyl-substituted side chain.
