82938-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 82938-05-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,9,3 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 82938-05:
(7*8)+(6*2)+(5*9)+(4*3)+(3*8)+(2*0)+(1*5)=154
154 % 10 = 4
So 82938-05-4 is a valid CAS Registry Number.
82938-05-4Relevant articles and documents
SYNTHESIS OF 3,4-13C2 STEROIDS
Yuan, Sun-Shine
, p. 279 - 290 (2007/10/02)
A-ring enollactones 1a, 1b or 9 derived from 4-cholesten-3-one, testosterone benzoate or 3-oxo-4-estren-17β-yl benzoate were condensed with acetyl chloride to give intermediates 2a, 2b or 10. 2a and 2b were cyclized by acid or base to give 3,4-1
