642940-01-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642940-01-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,9,4 and 0 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 642940-01:
(8*6)+(7*4)+(6*2)+(5*9)+(4*4)+(3*0)+(2*0)+(1*1)=150
150 % 10 = 0
So 642940-01-0 is a valid CAS Registry Number.