1628833-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1628833-21-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,2,8,8,3 and 3 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1628833-21:
(9*1)+(8*6)+(7*2)+(6*8)+(5*8)+(4*3)+(3*3)+(2*2)+(1*1)=185
185 % 10 = 5
So 1628833-21-5 is a valid CAS Registry Number.