77291-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77291-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,2,9 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 77291-89:
(7*7)+(6*7)+(5*2)+(4*9)+(3*1)+(2*8)+(1*9)=165
165 % 10 = 5
So 77291-89-5 is a valid CAS Registry Number.