642999-62-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642999-62-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,9,9 and 9 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 642999-62:
(8*6)+(7*4)+(6*2)+(5*9)+(4*9)+(3*9)+(2*6)+(1*2)=210
210 % 10 = 0
So 642999-62-0 is a valid CAS Registry Number.