77443-11-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77443-11-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,4 and 3 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77443-11:
(7*7)+(6*7)+(5*4)+(4*4)+(3*3)+(2*1)+(1*1)=139
139 % 10 = 9
So 77443-11-9 is a valid CAS Registry Number.