69879-46-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 69879-46-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,8,7 and 9 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 69879-46:
(7*6)+(6*9)+(5*8)+(4*7)+(3*9)+(2*4)+(1*6)=205
205 % 10 = 5
So 69879-46-5 is a valid CAS Registry Number.
69879-46-5Relevant articles and documents
Synthesis of 1α-fluorovitamin D3
Ohshima,Takatsuto,Ikekawa,DeLuca
, p. 3518 - 3524 (2007/10/02)
1α-Fluorovitamin D3 has been synthesized from 6β-acetoxy-5α-cholest-1-en-3-one (2) via 1α-fluorocholesterol (11). The key reaction was the trans diaxial ring opening of the 1β,2β-epoxide 5 with potassium hydrogen difluoride in ethyleneglycol by