7698-67-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7698-67-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,9 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7698-67:
(6*7)+(5*6)+(4*9)+(3*8)+(2*6)+(1*7)=151
151 % 10 = 1
So 7698-67-1 is a valid CAS Registry Number.
7698-67-1Relevant academic research and scientific papers
Kovganko,Survilo
, p. 340 - 343 (2002)
22,25-Dideoxyecdysone (1) and 5α-22,25-dideoxyecdysone (1a) were prepared from cholesterol via a new scheme using the key intermediates 3β-chloro-5α-bromo-6-ketone 3, 3β-chloro-7α -bromo-6-ketone 4, and 2,7-dien-6-one 7.