77213-93-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77213-93-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,1 and 3 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 77213-93:
(7*7)+(6*7)+(5*2)+(4*1)+(3*3)+(2*9)+(1*3)=135
135 % 10 = 5
So 77213-93-5 is a valid CAS Registry Number.