128403-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128403-20-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,0 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128403-20:
(8*1)+(7*2)+(6*8)+(5*4)+(4*0)+(3*3)+(2*2)+(1*0)=103
103 % 10 = 3
So 128403-20-3 is a valid CAS Registry Number.
128403-20-3Relevant academic research and scientific papers
A FACILE SYNTHESIS OF 3-(2-AMINO-4-ETHOXYPHENYL)PYRIDINE
Shibuya, Kimiyuki,Shigyo, Hiromichi,Ohta, Tomio
, p. 427 - 433 (2007/10/02)
A facile and efficient synthesis of 3-(2-amino-4-ethoxyphenyl)pyridine (6), a key intermediate of the antiarrhythmic agents, has been developed starting from 3-bromopyridine (2) by the benzyne reaction using sodium benzylamide as the key step.
