19698-66-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19698-66-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,9 and 8 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 19698-66:
(7*1)+(6*9)+(5*6)+(4*9)+(3*8)+(2*6)+(1*6)=169
169 % 10 = 9
So 19698-66-9 is a valid CAS Registry Number.
19698-66-9Relevant articles and documents
Synthesis of (22E,24R)-ergosta-4,7-22-triene-3,6-dione and its 14α-hydroxy-and 9α,14α-dihydroxy derivatives
Kovganko,Sokolov
, p. 320 - 323 (1999)
Δ4,7-3,6-Diketosteroids have been synthesized from ergosterol (1).