1242420-26-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1242420-26-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,2,4,2 and 0 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1242420-26:
(9*1)+(8*2)+(7*4)+(6*2)+(5*4)+(4*2)+(3*0)+(2*2)+(1*6)=103
103 % 10 = 3
So 1242420-26-3 is a valid CAS Registry Number.