31099-61-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31099-61-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,0,9 and 9 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 31099-61:
(7*3)+(6*1)+(5*0)+(4*9)+(3*9)+(2*6)+(1*1)=103
103 % 10 = 3
So 31099-61-3 is a valid CAS Registry Number.