634612-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 634612-42-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,4,6,1 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 634612-42:
(8*6)+(7*3)+(6*4)+(5*6)+(4*1)+(3*2)+(2*4)+(1*2)=143
143 % 10 = 3
So 634612-42-3 is a valid CAS Registry Number.