10002-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 10002-42-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,0,0,0 and 2 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 10002-42:
(7*1)+(6*0)+(5*0)+(4*0)+(3*2)+(2*4)+(1*2)=23
23 % 10 = 3
So 10002-42-3 is a valid CAS Registry Number.