1198159-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1198159-81-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,8,1,5 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1198159-81:
(9*1)+(8*1)+(7*9)+(6*8)+(5*1)+(4*5)+(3*9)+(2*8)+(1*1)=197
197 % 10 = 7
So 1198159-81-7 is a valid CAS Registry Number.