664970-38-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 664970-38-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,4,9,7 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 664970-38:
(8*6)+(7*6)+(6*4)+(5*9)+(4*7)+(3*0)+(2*3)+(1*8)=201
201 % 10 = 1
So 664970-38-1 is a valid CAS Registry Number.