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2,3-Dimethylbenzoic acid

Product Name
2,3-Dimethylbenzoic acid
CAS No.
603-79-2
Chemical Name
2,3-Dimethylbenzoic acid
Synonyms
hemelliticacid;Hemellitic acid;RARECHEM AL BO 0357;vic.-o-xylylic acid;2,3-dimethylbenzoate;2,3-dimethyl-benzoicaci;2,3-DIMETHYLBENZOIC ACID;O-XYLENE-3-CARBOXYLIC ACID;Benzoicacid, 2,3-dimethyl-;2,3-DimethylbenzoicAcid>
CBNumber
CB9768297
Molecular Formula
C9H10O2
Formula Weight
150.17
MOL File
603-79-2.mol
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2,3-Dimethylbenzoic acid Property

Melting point:
144-146 °C (lit.)
Boiling point:
271.51°C (estimate)
Density 
1.0937 (estimate)
refractive index 
1.5188 (estimate)
storage temp. 
Sealed in dry,Room Temperature
form 
powder to crystal
pka
pKa: 3.771(25°C)
color 
White to Almost white
BRN 
971590
InChI
InChI=1S/C9H10O2/c1-6-4-3-5-8(7(6)2)9(10)11/h3-5H,1-2H3,(H,10,11)
InChIKey
RIZUCYSQUWMQLX-UHFFFAOYSA-N
SMILES
C(O)(=O)C1=CC=CC(C)=C1C
CAS DataBase Reference
603-79-2(CAS DataBase Reference)
NIST Chemistry Reference
Benzoic acid, 2,3-dimethyl-(603-79-2)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-36-36/37/39-22
WGK Germany 
3
RTECS 
DG8734000
HazardClass 
IRRITANT
HS Code 
29163990
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

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

Sigma-Aldrich
Product number
138150
Product name
2,3-Dimethylbenzoic acid
Purity
98%
Packaging
5g
Price
$38
Updated
2025/07/31
Sigma-Aldrich
Product number
138150
Product name
2,3-Dimethylbenzoic acid
Purity
98%
Packaging
25g
Price
$127
Updated
2023/01/07
TCI Chemical
Product number
D2221
Product name
2,3-Dimethylbenzoic Acid
Purity
>98.0%(T)
Packaging
5g
Price
$24
Updated
2025/07/31
TCI Chemical
Product number
D2221
Product name
2,3-Dimethylbenzoic Acid
Purity
>98.0%(T)
Packaging
25g
Price
$69
Updated
2025/07/31
TRC
Product number
D464670
Product name
2,3-Dimethylbenzoic Acid
Packaging
50g
Price
$155
Updated
2021/12/16
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2,3-Dimethylbenzoic acid Chemical Properties,Usage,Production

Chemical Properties

white to light yellow crystal powder

Uses

2,3-Dimethylbenzoic Acid is used as a reagent in the synthesis of pyridyl benzamides as inhibitors for the kinetoplastid Trypanosoma brucei. 2,3-Dimethylbenzoic Acid is also used as a reagent in the synthesis of 2,3-Dihydro-1H-isoindole-4-carboxylic Acid (D450070) which is a reagent used in the synthesis of aminoalkylbenzoic acid derivatives for the treatment of faintness attacks, hypokinesia, cranial disorders, neurodegenerative disorders, depression, anxiety, neuropathic pain, neuropathological disorders and sleep disorders.

Definition

ChEBI: A dimethylbenzoic acid in which the two methyl groups are located at positions 2 and 3.

General Description

2,3-Dimethylbenzoic acid shows high binding affinity with antenna-specific odorant-binding protein of the alfalfa plant bug, Adelphocoris lineolatus.

Synthesis

95-47-6

124-38-9

603-79-2

1. 40 mL of dry o-xylene was rapidly added to a 250 mL PTFE-lined autoclave under argon protection. 2. 2.5 g of anhydrous aluminum trichloride (AlCl3) and 1.16 g of dry N-butylimidazole were added sequentially. Add 2.5 g of anhydrous aluminum trichloride (AlCl3) and 1.16 g of dry N-butylimidazole sequentially, and seal the reaction vessel after addition. 2. Connect a carbon dioxide cylinder to the autoclave through a pipeline, adjust the valve so that the CO2 pressure is maintained at 6 MPa, start the stirrer, and set the rotation speed at 1,000 rpm, and then begin to heat the system to 40°C, and the reaction lasts for 48 hours. 3. At the end of the reaction, 150 mL of water was added to the system and stirred for 30 min. 4. The reaction mixture was extracted three times with 50 mL of ether, and the organic phases were combined, concentrated and dried to give 2.76 g of an off-white solid, i.e., crude 2,3-dimethylbenzoic acid. 5. The above crude product was dissolved in 20 mL of a 10% (w/w) sodium hydroxide solution, and filtered to remove insoluble matter, to give a filtrate. 6. The filtrate was extracted with 1 mol/L hydrochloric acid to adjust the pH of the filtrate to 1 and let it stand at room temperature for 60 min. 7. The mixture was transferred to -10°C for further crystallization and filtered to obtain crystals. 8. The crystals were dried to obtain 2.29 g of white solid 2,3-dimethylbenzoic acid in 81.3% yield.

Purification Methods

Crystallise the acid from EtOH. It is volatile in steam. The amide has m 156o (from H2O). [Beilstein 9 H 531, 9 III 2434, 9 IV 1797.]

References

[1] Patent: CN107827742, 2018, A. Location in patent: Paragraph 0059; 0060

2,3-Dimethylbenzoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

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2,3-Dimethylbenzoic acid Suppliers

TOKYO CHEMICAL INDUSTRY CO., LTD.
Tel
03-36680489
Fax
03-3668-0520
Email
Sales-JP@TCIchemicals.com
Country
Japan
ProdList
28387
Advantage
80
Wako Pure Chemical Industries, Ltd.
Tel
--
Fax
--
Email
labchem-tec@wako-chem.co.jp
Country
Japan
ProdList
6819
Advantage
80
Kanto Chemical Co., Inc.
Tel
--
Fax
--
Email
reag-info@gms.kanto.co.jp
Country
Japan
ProdList
6756
Advantage
74
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View Lastest Price from 2,3-Dimethylbenzoic acid manufacturers

Henan Aochuang Chemical Co.,Ltd.
Product
2,3-Dimethylbenzoic acid 603-79-2
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
1Ton
Release date
2022-10-19
ShenZhen H&D Pharmaceutical Technology Co., LTD
Product
Medetomidine Impurity 20 603-79-2
Price
US $0.00/mg
Min. Order
10mg
Purity
0.98
Supply Ability
10g
Release date
2024-03-27
ShenZhen H&D Pharmaceutical Technology Co., LTD
Product
Medetomidine Impurity 603-79-2
Price
US $0.00/mg
Min. Order
10mg
Purity
0.98
Supply Ability
10g
Release date
2024-03-27

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