331637-70-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331637-70-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,6,3 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 331637-70:
(8*3)+(7*3)+(6*1)+(5*6)+(4*3)+(3*7)+(2*7)+(1*0)=128
128 % 10 = 8
So 331637-70-8 is a valid CAS Registry Number.