238420-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 238420-42-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,8,4,2 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 238420-42:
(8*2)+(7*3)+(6*8)+(5*4)+(4*2)+(3*0)+(2*4)+(1*2)=123
123 % 10 = 3
So 238420-42-3 is a valid CAS Registry Number.