331747-64-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 331747-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,1,7,4 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 331747-64:
(8*3)+(7*3)+(6*1)+(5*7)+(4*4)+(3*7)+(2*6)+(1*4)=139
139 % 10 = 9
So 331747-64-9 is a valid CAS Registry Number.