231287-42-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 231287-42-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,1,2,8 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 231287-42:
(8*2)+(7*3)+(6*1)+(5*2)+(4*8)+(3*7)+(2*4)+(1*2)=116
116 % 10 = 6
So 231287-42-6 is a valid CAS Registry Number.