77345-55-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77345-55-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,3,4 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77345-55:
(7*7)+(6*7)+(5*3)+(4*4)+(3*5)+(2*5)+(1*5)=152
152 % 10 = 2
So 77345-55-2 is a valid CAS Registry Number.