90291-99-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90291-99-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,2,9 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 90291-99:
(7*9)+(6*0)+(5*2)+(4*9)+(3*1)+(2*9)+(1*9)=139
139 % 10 = 9
So 90291-99-9 is a valid CAS Registry Number.