90721-72-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90721-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,2 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 90721-72:
(7*9)+(6*0)+(5*7)+(4*2)+(3*1)+(2*7)+(1*2)=125
125 % 10 = 5
So 90721-72-5 is a valid CAS Registry Number.