642487-48-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642487-48-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,8 and 7 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 642487-48:
(8*6)+(7*4)+(6*2)+(5*4)+(4*8)+(3*7)+(2*4)+(1*8)=177
177 % 10 = 7
So 642487-48-7 is a valid CAS Registry Number.