1000018-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1000018-31-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,0,0,0,1 and 8 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1000018-31:
(9*1)+(8*0)+(7*0)+(6*0)+(5*0)+(4*1)+(3*8)+(2*3)+(1*1)=44
44 % 10 = 4
So 1000018-31-4 is a valid CAS Registry Number.