1187788-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1187788-81-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,7,7,8 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1187788-81:
(9*1)+(8*1)+(7*8)+(6*7)+(5*7)+(4*8)+(3*8)+(2*8)+(1*1)=223
223 % 10 = 3
So 1187788-81-3 is a valid CAS Registry Number.