76889-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 76889-81-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,8,8 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76889-81:
(7*7)+(6*6)+(5*8)+(4*8)+(3*9)+(2*8)+(1*1)=201
201 % 10 = 1
So 76889-81-1 is a valid CAS Registry Number.