20637-30-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20637-30-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,3 and 7 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 20637-30:
(7*2)+(6*0)+(5*6)+(4*3)+(3*7)+(2*3)+(1*0)=83
83 % 10 = 3
So 20637-30-3 is a valid CAS Registry Number.