40211-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40211-20-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,2,1 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 40211-20:
(7*4)+(6*0)+(5*2)+(4*1)+(3*1)+(2*2)+(1*0)=49
49 % 10 = 9
So 40211-20-9 is a valid CAS Registry Number.
InChI:InChI=1/C7H7NO2/c1-5-4-8-3-2-6(5)7(9)10/h2-4H,1H3,(H,9,10)