77128-32-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77128-32-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,1,2 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 77128-32:
(7*7)+(6*7)+(5*1)+(4*2)+(3*8)+(2*3)+(1*2)=136
136 % 10 = 6
So 77128-32-6 is a valid CAS Registry Number.