90580-23-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90580-23-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,8 and 0 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90580-23:
(7*9)+(6*0)+(5*5)+(4*8)+(3*0)+(2*2)+(1*3)=127
127 % 10 = 7
So 90580-23-7 is a valid CAS Registry Number.