4936-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4936-20-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,9,3 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4936-20:
(6*4)+(5*9)+(4*3)+(3*6)+(2*2)+(1*0)=103
103 % 10 = 3
So 4936-20-3 is a valid CAS Registry Number.