31890-88-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31890-88-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,8,9 and 0 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 31890-88:
(7*3)+(6*1)+(5*8)+(4*9)+(3*0)+(2*8)+(1*8)=127
127 % 10 = 7
So 31890-88-7 is a valid CAS Registry Number.