1920-51-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1920-51-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,9,2 and 0 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1920-51:
(6*1)+(5*9)+(4*2)+(3*0)+(2*5)+(1*1)=70
70 % 10 = 0
So 1920-51-0 is a valid CAS Registry Number.