7604-97-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 7604-97-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,0 and 4 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7604-97:
(6*7)+(5*6)+(4*0)+(3*4)+(2*9)+(1*7)=109
109 % 10 = 9
So 7604-97-9 is a valid CAS Registry Number.