Nsc21187

Product Name: Nsc21187
CAS No.: 87932-49-8
Chemical Name: Nsc21187
Synonyms: Nsc21187;3-chloro-4,5-dihydroxybenzoic acid;Benzoic acid, 3-chloro-4,5-dihydroxy-
CBNumber: CB52492279
Molecular Formula: C7H5ClO4
Formula Weight: 188.57
MOL File: 87932-49-8.mol

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Nsc21187 Property

Boiling point:: 391.7±42.0 °C(Predicted)
Density: 1.702±0.06 g/cm3(Predicted)
storage temp.: Sealed in dry,Room Temperature
pka: 4.08±0.10(Predicted)
Appearance: White to off-white Solid

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

AK Scientific

Product number: 2705AQ
Product name: 3-CHLORO-4,5-DIHYDROXYBENZOICACID
Packaging: 500mg
Price: $390.8
Updated: 2021/12/16

Crysdot

Product number: CD12020141
Product name: 3-Chloro-4,5-dihydroxybenzoicacid
Purity: 95+%
Packaging: 5g
Price: $792
Updated: 2021/12/16

Chemenu

Product number: CM132886
Product name: 3-chloro-4,5-dihydroxybenzoicacid
Purity: 95%
Packaging: 5g
Price: $982
Updated: 2021/12/16

Alichem

Product number: 87932498
Product name: 3-Chloro-4,5-dihydroxybenzoicacid
Packaging: 5g
Price: $1050
Updated: 2021/12/16

Crysdot

Product number: CD12020141
Product name: 3-Chloro-4,5-dihydroxybenzoicacid
Purity: 95+%
Packaging: 10g
Price: $1485
Updated: 2021/12/16

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Nsc21187 Chemical Properties,Usage,Production

Synthesis

62936-23-6

87932-49-8

General procedure for the synthesis of 3-chloro-4,5-dihydroxybenzoic acid from 3-chloro-4-hydroxy-5-methoxybenzoic acid: Step (i): tribromoborane (7.86 mL, 82 mmol) was added dropwise to a stirred solution of 3-chloro-4-hydroxy-5-methoxybenzoic acid (6.61 g, 32.6 mmol) in dichloromethane (50 mL) under nitrogen protection. The reaction mixture was continued to be stirred at 0 °C for 2 h and subsequently poured in batches into ice/brine (250 mL). The aqueous phase was extracted with ethyl acetate (2 x 150 mL) and the combined organic phases were dried over magnesium sulfate and filtered. The solvent was removed by concentration under reduced pressure to give 3-chloro-4,5-dihydroxybenzoic acid (5.11 g, 79% yield). Mass spectrum (electrospray ionization, negative mode) m/z 187 [M-H]? ; 1H NMR (400 MHz, DMSO-d?) δ: 12.69 (1H, broad single peak), 10.14 (2H, broad single peak), 7.35 (1H, double peak), 7.32 (1H, double peak).

References

[1] Patent: WO2011/27106, 2011, A1. Location in patent: Page/Page column 106-107
[2] Patent: US2012/149737, 2012, A1. Location in patent: Page/Page column 58
[3] Bioorganic and Medicinal Chemistry, 2018, vol. 26, # 4, p. 798 - 814

Nsc21187 Preparation Products And Raw materials

Raw materials

Preparation Products

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Nsc21187 Suppliers

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