690965-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 690965-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,9,0,9,6 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 690965-91:
(8*6)+(7*9)+(6*0)+(5*9)+(4*6)+(3*5)+(2*9)+(1*1)=214
214 % 10 = 4
So 690965-91-4 is a valid CAS Registry Number.