56631-98-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56631-98-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,6,3 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 56631-98:
(7*5)+(6*6)+(5*6)+(4*3)+(3*1)+(2*9)+(1*8)=142
142 % 10 = 2
So 56631-98-2 is a valid CAS Registry Number.