158641-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 158641-54-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,4 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 158641-54:
(8*1)+(7*5)+(6*8)+(5*6)+(4*4)+(3*1)+(2*5)+(1*4)=154
154 % 10 = 4
So 158641-54-4 is a valid CAS Registry Number.
158641-54-4Relevant academic research and scientific papers
Synthesis and EPR Investigations of Fluorocatecholamines
Stegmann, Hartmut B.,Deuschle, Gabriele,Schuler, Paul
, p. 547 - 556 (2007/10/02)
The synthesis of 3-fluoro and 5-fluoronoradrenaline (3- and 5-fluoronorepinephrine) starting from 4-fluorophenol or 3-fluoroanisole is described.In the first step the second OH group is introduced followed by O-methylation and subsequent introduction of a
