664999-38-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664999-38-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,9 and 9 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 664999-38:
(8*6)+(7*6)+(6*4)+(5*9)+(4*9)+(3*9)+(2*3)+(1*8)=236
236 % 10 = 6
So 664999-38-6 is a valid CAS Registry Number.