638142-46-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 638142-46-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,8,1,4 and 2 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 638142-46:
(8*6)+(7*3)+(6*8)+(5*1)+(4*4)+(3*2)+(2*4)+(1*6)=158
158 % 10 = 8
So 638142-46-8 is a valid CAS Registry Number.