4821-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4821-67-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,2 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4821-67:
(6*4)+(5*8)+(4*2)+(3*1)+(2*6)+(1*7)=94
94 % 10 = 4
So 4821-67-4 is a valid CAS Registry Number.