7611-84-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7611-84-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,1 and 1 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 7611-84:
(6*7)+(5*6)+(4*1)+(3*1)+(2*8)+(1*4)=99
99 % 10 = 9
So 7611-84-9 is a valid CAS Registry Number.