77969-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77969-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,6 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77969-57:
(7*7)+(6*7)+(5*9)+(4*6)+(3*9)+(2*5)+(1*7)=204
204 % 10 = 4
So 77969-57-4 is a valid CAS Registry Number.
77969-57-4Relevant academic research and scientific papers
Selective protection of hydroxyls in natural type E and F prostaglandins
Bezuglov,Serkov
experimental part, p. 291 - 296 (2012/10/08)
Methods for selective protection of hydroxyls in natural type E and F prostaglandins were developed.
