90049-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90049-91-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,4 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 90049-91:
(7*9)+(6*0)+(5*0)+(4*4)+(3*9)+(2*9)+(1*1)=125
125 % 10 = 5
So 90049-91-5 is a valid CAS Registry Number.