90991-46-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90991-46-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,9 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 90991-46:
(7*9)+(6*0)+(5*9)+(4*9)+(3*1)+(2*4)+(1*6)=161
161 % 10 = 1
So 90991-46-1 is a valid CAS Registry Number.