1353977-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1353977-81-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,3,9,7 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1353977-81:
(9*1)+(8*3)+(7*5)+(6*3)+(5*9)+(4*7)+(3*7)+(2*8)+(1*1)=197
197 % 10 = 7
So 1353977-81-7 is a valid CAS Registry Number.