42103-65-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42103-65-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,1,0 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 42103-65:
(7*4)+(6*2)+(5*1)+(4*0)+(3*3)+(2*6)+(1*5)=71
71 % 10 = 1
So 42103-65-1 is a valid CAS Registry Number.