1013937-81-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1013937-81-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,3,9,3 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1013937-81:
(9*1)+(8*0)+(7*1)+(6*3)+(5*9)+(4*3)+(3*7)+(2*8)+(1*1)=129
129 % 10 = 9
So 1013937-81-9 is a valid CAS Registry Number.