99666-94-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 99666-94-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,6,6 and 6 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 99666-94:
(7*9)+(6*9)+(5*6)+(4*6)+(3*6)+(2*9)+(1*4)=211
211 % 10 = 1
So 99666-94-1 is a valid CAS Registry Number.