663935-87-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 663935-87-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,3,9,3 and 5 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 663935-87:
(8*6)+(7*6)+(6*3)+(5*9)+(4*3)+(3*5)+(2*8)+(1*7)=203
203 % 10 = 3
So 663935-87-3 is a valid CAS Registry Number.