76987-91-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76987-91-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,9,8 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76987-91:
(7*7)+(6*6)+(5*9)+(4*8)+(3*7)+(2*9)+(1*1)=202
202 % 10 = 2
So 76987-91-2 is a valid CAS Registry Number.