77507-60-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77507-60-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,0 and 7 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 77507-60:
(7*7)+(6*7)+(5*5)+(4*0)+(3*7)+(2*6)+(1*0)=149
149 % 10 = 9
So 77507-60-9 is a valid CAS Registry Number.