234753-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 234753-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,4,7,5 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 234753-20:
(8*2)+(7*3)+(6*4)+(5*7)+(4*5)+(3*3)+(2*2)+(1*0)=129
129 % 10 = 9
So 234753-20-9 is a valid CAS Registry Number.