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403-33-8

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403-33-8 Usage

Chemical Properties

Colorless liquid

Uses

Different sources of media describe the Uses of 403-33-8 differently. You can refer to the following data:
1. 4-Fluorobenzoic Acid Methyl Ester, is an organic fluorinated building block used for the synthesis of various pharmaceutical compounds. It can be used for the preparation of Blonanserin (B595850).
2. Methyl 4-fluorobenzoate can be used in the synthesis of trisubstituted imidazole derivatives containing a 4-fluorophenyl group, a pyrimidine ring, and a CN- or CONH2-substituted benzyl moiety.

Check Digit Verification of cas no

The CAS Registry Mumber 403-33-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,0 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 403-33:
(5*4)+(4*0)+(3*3)+(2*3)+(1*3)=38
38 % 10 = 8
So 403-33-8 is a valid CAS Registry Number.
InChI:InChI=1/C8H10FN/c1-6(10)7-2-4-8(9)5-3-7/h2-6H,10H2,1H3

403-33-8 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • Alfa Aesar

  • (B21504)  Methyl 4-fluorobenzoate, 97%   

  • 403-33-8

  • 5g

  • 193.0CNY

  • Detail
  • Alfa Aesar

  • (B21504)  Methyl 4-fluorobenzoate, 97%   

  • 403-33-8

  • 25g

  • 656.0CNY

  • Detail
  • Alfa Aesar

  • (B21504)  Methyl 4-fluorobenzoate, 97%   

  • 403-33-8

  • 100g

  • 2224.0CNY

  • Detail

403-33-8Relevant articles and documents

Absolute raman intensities of the carbonyl stretching band in para substituted methyl benzoates

Vanderheyden,Zeegers-Huyskens

, p. 1423 - 1428 (1989)

The absolute Raman intensities of the vC=0 band of para-substituted methyl benzoates have been measured in CCl4 solution at different excitation frequencies. The intensities depend on a preresonance Raman effect (PRRE) and are correlated with theoretical expressions which describe the dispersion of the Raman intensity as a function of the excitation frequency and the experimental UV frequencies of the compounds, in particular the π→π* 1La band. The Raman intensities free from PRRE are deduced by extrapolating the experimental values to a zero excitation frequency. These extrapolated intensities depend on the electron-donating character of the substituents and on the extent of the conjugated system. The depolarization ratio of the vC=0 band in methyl benzoates increases with the excitation energies. This ratio is higher for the para-substituted derivatives.

Br?nsted acid-catalyzed chlorination of aromatic carboxylic acids

Yu, Zhiqun,Yao, Hongmiao,Xu, Qilin,Liu, Jiming,Le, Xingmao,Ren, Minna

, p. 685 - 689 (2021/04/09)

The chlorination of aromatic carboxylic acids with SOCl2 has been effectively performed by reacting with a Br?nsted acid as the catalyst. Based on this discovery, an efficient catalytic method that is cheaper than traditional catalytic methods was developed. 20 substrates were chlorinated offering excellent yields in a short reaction time. And the SOCl2/Br?nsted acid system has been used in a larger scale preparative reaction. A dual activation mechanism was proposed to prove the irreplaceable system of SOCl2/Br?nsted acid.

Androgen receptor inhibitor and application thereof

-

Paragraph 0273-0276, (2021/11/10)

The invention relates to the field of pharmacy, and particularly discloses an androgen receptor (AR) regulator combined with E3 ubiquitin ligase ligand or a salt thereof. Isomer and contains their pharmaceutical compositions.

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