939979-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 939979-91-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,9,9,7 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 939979-91:
(8*9)+(7*3)+(6*9)+(5*9)+(4*7)+(3*9)+(2*9)+(1*1)=266
266 % 10 = 6
So 939979-91-6 is a valid CAS Registry Number.