4807-21-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4807-21-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,0 and 7 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4807-21:
(6*4)+(5*8)+(4*0)+(3*7)+(2*2)+(1*1)=90
90 % 10 = 0
So 4807-21-0 is a valid CAS Registry Number.