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(RS)-2-(4-chloro-3-nitrophenyl)-propionic acid is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21520-26-3

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21520-26-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21520-26-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,5,2 and 0 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21520-26:
(7*2)+(6*1)+(5*5)+(4*2)+(3*0)+(2*2)+(1*6)=63
63 % 10 = 3
So 21520-26-3 is a valid CAS Registry Number.

21520-26-3Relevant academic research and scientific papers

Convenient syntheses of racemic 2-(3-nitrophenyl)propanoic acid and 2-(3-aminophenyl)propanoic acid

Grondard, Luc,Manfre, Franco,Mutti, Stephane

, p. 425 - 430 (1997)

2-(4-Chlorophenyl)propanoic acid 1 is transformed to 2-(4-chloro-3-nitrophenyl)propanoic acid 2 (94% yield). Acid 2 can be converted to 2-(3-nitrophenyl)propanoic acid 3 (70% yield) or to 2-(3-aminophenyl)propanoic acid 4 (80% yield).

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