331970-61-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331970-61-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,9,7 and 0 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 331970-61:
(8*3)+(7*3)+(6*1)+(5*9)+(4*7)+(3*0)+(2*6)+(1*1)=137
137 % 10 = 7
So 331970-61-7 is a valid CAS Registry Number.