1638220-66-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1638220-66-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,8,2,2 and 0 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1638220-66:
(9*1)+(8*6)+(7*3)+(6*8)+(5*2)+(4*2)+(3*0)+(2*6)+(1*6)=162
162 % 10 = 2
So 1638220-66-2 is a valid CAS Registry Number.