64858-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 64858-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,8,5 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 64858-21:
(7*6)+(6*4)+(5*8)+(4*5)+(3*8)+(2*2)+(1*1)=155
155 % 10 = 5
So 64858-21-5 is a valid CAS Registry Number.