9004-51-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 9004-51-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 9,0,0 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 9004-51:
(6*9)+(5*0)+(4*0)+(3*4)+(2*5)+(1*1)=77
77 % 10 = 7
So 9004-51-7 is a valid CAS Registry Number.