164528-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 164528-21-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,4,5,2 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 164528-21:
(8*1)+(7*6)+(6*4)+(5*5)+(4*2)+(3*8)+(2*2)+(1*1)=136
136 % 10 = 6
So 164528-21-6 is a valid CAS Registry Number.