9034-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 9034-91-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,3 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 9034-91:
(6*9)+(5*0)+(4*3)+(3*4)+(2*9)+(1*1)=97
97 % 10 = 7
So 9034-91-7 is a valid CAS Registry Number.