231302-81-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 231302-81-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,1,3,0 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 231302-81:
(8*2)+(7*3)+(6*1)+(5*3)+(4*0)+(3*2)+(2*8)+(1*1)=81
81 % 10 = 1
So 231302-81-1 is a valid CAS Registry Number.