101431-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 101431-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,4,3 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 101431-21:
(8*1)+(7*0)+(6*1)+(5*4)+(4*3)+(3*1)+(2*2)+(1*1)=54
54 % 10 = 4
So 101431-21-4 is a valid CAS Registry Number.