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4-Chloropyridine-2-carboxylic acid

CAS No.
5470-22-4
Chemical Name:
4-Chloropyridine-2-carboxylic acid
Synonyms
4-CHLOROPICOLINIC ACID;4-chloropicolinic;Chloropicolinicacid;IFLAB-BB F1926-0017;4-ChloropicolinicAci;Sorafenib Impurity 03;4-chloro-2-picolinic acid;4-CHLOROPICOLINIC ACID 99%;4-Chloropicolinic acid ,98%;4-Chloropicolinic acid, 97.5%
CBNumber:
CB7353077
Molecular Formula:
C6H4ClNO2
Molecular Weight:
157.55
MDL Number:
MFCD00191400
MOL File:
5470-22-4.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 05:30:52

4-Chloropyridine-2-carboxylic acid Properties

Melting point 181°C
Boiling point 308.0±22.0 °C(Predicted)
Density 1.470±0.06 g/cm3(Predicted)
storage temp. Keep in dark place,Sealed in dry,Room Temperature
form powder to crystal
pka 3.27±0.10(Predicted)
color White to Almost white
InChI InChI=1S/C6H4ClNO2/c7-4-1-2-8-5(3-4)6(9)10/h1-3H,(H,9,10)
InChIKey NNMYRMGMVLMQAY-UHFFFAOYSA-N
SMILES C1(C(O)=O)=NC=CC(Cl)=C1
CAS DataBase Reference 5470-22-4(CAS DataBase Reference)
UNSPSC Code 12352106
NACRES NA.21

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs Respiratory system
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36/37/39
WGK Germany  WGK 3
Hazard Note  Harmful/Irritant/Keep Cold
HazardClass  IRRITANT
HS Code  29339900
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
NFPA 704
0
2 0

4-Chloropyridine-2-carboxylic acid price More Price(72)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich CDS000043 4-Chloro-2-pyridinecarboxylic acid AldrichCPR 5470-22-4 100MG $77.9 2026-04-30 Buy
Sigma-Aldrich ADE000290 4-Chloro-pyridine-2-carboxylic acid Aldrich 5470-22-4 1g $230 2026-04-30 Buy
TCI Chemical C1360 4-Chloro-2-pyridinecarboxylic Acid >98.0%(GC)(T) 5470-22-4 1g $64 2026-04-30 Buy
TCI Chemical C1360 4-Chloro-2-pyridinecarboxylic Acid >98.0%(GC)(T) 5470-22-4 5g $208 2026-04-30 Buy
AstaTech 57846 4-CHLOROPYRIDINE-2-CARBOXYLIC ACID 97% 5470-22-4 50G $37 2026-04-30 Buy
Product number Packaging Price Buy
CDS000043 100MG $77.9 Buy
ADE000290 1g $230 Buy
C1360 1g $64 Buy
C1360 5g $208 Buy
57846 50G $37 Buy

4-Chloropyridine-2-carboxylic acid Chemical Properties,Uses,Production

Chemical Properties

White solid

Uses

4-Chloropicolinic Acid is a reactant used in the synthesis of VU0431316, a negative allosteric modulator of mGlu5.

Synthesis

2-Picolinic acid

98-98-6

4-Chloropyridine-2-carboxylic acid

5470-22-4

General procedure for the synthesis of 4-chloropyridine-2-carboxylic acid from 2-pyridinecarboxylic acid: a suspension of 2-pyridinecarboxylic acid (0.79 g, 6.35 mmol) and sodium bromide (1.30 g, 12.7 mmol) in 10 mL of thionyl chloride was heated for 20 hr under mild reflux conditions. During the reaction, the initial dark green color of the mixture gradually changed to a deep red color. Upon completion of the reaction, the excess thionyl chloride was removed by rotary evaporation, and the resulting orange residue was dissolved in about 15 mL of dichloromethane and filtered through diatomaceous earth to remove insoluble impurities. The orange filtrate was cooled to -2°C and 20 mL of double-distilled water was slowly added under vigorous stirring while maintaining the reaction temperature between -2 and 2°C. At this point, the color of the solution changed to light orange and a white precipitate was produced. Subsequently, the mixture was continued to be stirred at room temperature for 20 hours. Afterwards, dichloromethane and water were removed by rotary evaporation. Finally, the solid product was recrystallized from a minimal amount of ethanol to give 0.28 g (28% yield) of 4-chloropyridine-2-carboxylic acid. The structure of the product was confirmed by 1H NMR (DMSO-d6): δ= 8.72 (1H, d, J = 4.9 Hz), 8.09 (1H, d, J = 1.6 Hz), 7.84 (1H, dd, J = 4.9, 1.6 Hz).

References

[1] Patent: WO2008/17855, 2008, A1. Location in patent: Page/Page column 48-49
[2] Synthetic Communications, 1996, vol. 26, # 10, p. 2017 - 2025
[3] Patent: US2006/160803, 2006, A1. Location in patent: Page/Page column 136
[4] Patent: EP1650194, 2006, A1. Location in patent: Page/Page column 37

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View Lastest Price from 4-Chloropyridine-2-carboxylic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-Chloropyridine-2-carboxylic acid  pictures 2026-08-20 4-Chloropyridine-2-carboxylic acid
5470-22-4
$1.10 1g 99.00% 100 Tons Min Dideu Industries Group Limited
4-Chloropyridine-2-carboxylic acid pictures 2025-04-04 4-Chloropyridine-2-carboxylic acid
5470-22-4
1KG 98% 1Ton Henan Aochuang Chemical Co.,Ltd.
4-Chloropyridine-2-carboxylic acid pictures 2021-07-02 4-Chloropyridine-2-carboxylic acid
5470-22-4
$10.00-15.00 1KG 99%+ HPLC Zhuozhou Wenxi import and Export Co., Ltd
IFLAB-BB F1926-0017 4-CHLOROPYRIDINE-2-CARBOXYLIC ACID 4-CHLORO-2-PYRIDINECARBOXYLIC ACID 4-Chloropyridine-2-carboxylic Chloropicolinicacid 4-CHLOROPICOLINIC ACID 99% 4-Chloropicolinic acid ,98% 4-chloropicolinic 4-Chloropicolinic acid, 2-Carboxy-4-chloropyridine 4-Chloropicolinic acid, 97.5% 4-chloro-2-picolinic acid 4-Chloropyridine-2-carboxylicacid,94% 2-Pyridinecarboxylicacid, 4-chloro- 4-Chloro-2-pyridinecarboxylic Acid > 4-Chloropyridine-2-carboxylic acid ISO 9001:2015 REACH Sorafenib tosylate Impurity U -Chloropyridine-2-carboxylic acid 4-ChloropicolinicAci 4-Chloropyridin-2-carboxylic acid Sorafenib Impurity 03 4-CHLOROPICOLINIC ACID 2-formic acid - 4-chloropyridine 5470-22-4 5770-22-4 25470-22-4 Chloropyridines Halopyridines Chloropyridines Halopyridines Carboxylic Acids Pyridine pharmacetical Carboxylic Acids blocks Carboxes Pyridines Pyridine series Acids and Derivatives Heterocycles