664371-49-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664371-49-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,3,7 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 664371-49:
(8*6)+(7*6)+(6*4)+(5*3)+(4*7)+(3*1)+(2*4)+(1*9)=177
177 % 10 = 7
So 664371-49-7 is a valid CAS Registry Number.