33406-44-9 Usage
Preparation
Obtained by condensation of a-chloro-3,4-dihydroxy-acetophenone with butylamine in ethanol or isopropanol at 60–80°.
Check Digit Verification of cas no
The CAS Registry Mumber 33406-44-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,0 and 6 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 33406-44:
(7*3)+(6*3)+(5*4)+(4*0)+(3*6)+(2*4)+(1*4)=89
89 % 10 = 9
So 33406-44-9 is a valid CAS Registry Number.