638161-33-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 638161-33-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,8,1,6 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 638161-33:
(8*6)+(7*3)+(6*8)+(5*1)+(4*6)+(3*1)+(2*3)+(1*3)=158
158 % 10 = 8
So 638161-33-8 is a valid CAS Registry Number.