20334-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20334-77-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,3,3 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 20334-77:
(7*2)+(6*0)+(5*3)+(4*3)+(3*4)+(2*7)+(1*7)=74
74 % 10 = 4
So 20334-77-4 is a valid CAS Registry Number.