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ISOXAZOLE-5-CARBOXYLIC ACID

ISOXAZOLE-5-CARBOXYLIC ACID structure

CAS No.: 21169-71-1

Chemical Name:: ISOXAZOLE-5-CARBOXYLIC ACID

Synonyms: AKOS PAO-1371;BUTTPARK 27\08-41;5-Carboxyisoxazole;TIMTEC-BB SBB004319;5-Carboxy-1,2-oxazole;Isoxazol-5-carbonsaeure;Isoxazole 5-formic acid;Isozole-5-carboxylic acid;5-Isoxazolecarboxylic acid;Isoxazol-5-carboxylic acid

CBNumber:: CB1758728

Molecular Formula:: C4H3NO3

Molecular Weight:: 113.07

MDL Number:: MFCD00156151

MOL File:: 21169-71-1.mol

MSDS File:: SDS

Last updated:2025-07-04 16:04:00

Product description	Number	Pack Size	Price
Isoxazole-5-carboxylic acid 97%	636258	5g	$213
Isoxazole-5-carboxylic Acid min. 97.0 %	I1227	1G	$46
Isoxazole-5-carboxylic Acid min. 97.0 %	I1227	5G	$138
5-IsoxazolecarboxylicAcid	I918110	25g	$825
ISOXAZOLE-5-CARBOXYLIC ACID 95.00%	CHM0030226	5G	$1005.43
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ISOXAZOLE-5-CARBOXYLIC ACID Properties

Melting point	144-148 °C(lit.)
Boiling point	211.74°C (rough estimate)
Density	1.5808 (rough estimate)
refractive index	1.4543 (estimate)
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
form	Powder
pka	2.29±0.10(Predicted)
color	Slightly yellow
Water Solubility	Slightly soluble in water.
Sensitive	Moisture Sensitive
InChI	InChI=1S/C4H3NO3/c6-4(7)3-1-2-5-8-3/h1-2H,(H,6,7)
InChIKey	MIIQJAUWHSUTIT-UHFFFAOYSA-N
SMILES	O1C(C(O)=O)=CC=N1
CAS DataBase Reference	21169-71-1(CAS DataBase Reference)
UNSPSC Code	12352100
NACRES	NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS07

Signal word

Warning

Hazard statements

H315-H319-H335

Precautionary statements

P261-P280a-P304+P340-P305+P351+P338-P405-P501a

Hazard Codes

Risk Statements

36/37/38

Safety Statements

24/25-25-24-36-26

WGK Germany

HazardClass

IRRITANT

HS Code

29349990

NFPA 704

	1
0		0

ISOXAZOLE-5-CARBOXYLIC ACID price More Price(34)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	636258	Isoxazole-5-carboxylic acid 97%	21169-71-1	5g	$213	2023-06-20	Buy
TCI Chemical	I1227	Isoxazole-5-carboxylic Acid min. 97.0 %	21169-71-1	1G	$46	2025-07-31	Buy
TCI Chemical	I1227	Isoxazole-5-carboxylic Acid min. 97.0 %	21169-71-1	5G	$138	2025-07-31	Buy
TRC	I918110	5-IsoxazolecarboxylicAcid	21169-71-1	25g	$825	2021-12-16	Buy
American Custom Chemicals Corporation	CHM0030226	ISOXAZOLE-5-CARBOXYLIC ACID 95.00%	21169-71-1	5G	$1005.43	2021-12-16	Buy

Product number	Packaging	Price	Buy
636258	5g	$213	Buy
I1227	1G	$46	Buy
I1227	5G	$138	Buy
I918110	25g	$825	Buy
CHM0030226	5G	$1005.43	Buy

ISOXAZOLE-5-CARBOXYLIC ACID Chemical Properties,Uses,Production

Chemical Properties

slightly yellow powder

Uses

Reaction conditions were found to allow the exclusive formation of isoxazole-5-carboxylic acid derivatives by conjugate addition, in acidic medium, of hydroxylamine to β-alkoxyvinyl trichloromethyl ketone in synthesis and reactivity of isoxazoles. Isoxazole-5-carboxylic acid participates in the Synthesis and evaluation of acylguanidine FXa inhibitors. 1, 1, 1-trichloro-4-methoxy-3-penten-2-one postulated in the preparation of isoxazole-5-carboxylic acid from trichloroacetyl chloride, ethyl vinyl ether and hydroxylamine is developed in a fully saturated nitrogen atom theerefore there is no possibility of conjugation with 4- substituents.

General Description

Isoxazole-5-carboxylic acid can be obtained via dehydration of 5-trichloromethylisoxazole.

ISOXAZOLE-5-CARBOXYLIC ACID Preparation Products And Raw materials

Raw materials

Hexane Trifluoroacetic anhydride Diethyl ether Lithium Aluminum Hydride Dichloromethane

Methanol Hydroxylamine hydrochloride Pyridine Thionyl chloride Sulfuric acid

Trichloroacetic acid

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Preparation Products

5-Isoxazolecarboxamide,N-methoxy-N-methyl-(9CI)

ISOXAZOLE-5-CARBOXYLIC ACID Suppliers

Global( 203)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Capot Chemical Co.,Ltd.	+86-（0）57185586718; +8613336195806	sales@capot.com	China	29735	60
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29839	58
Accela ChemBio Inc.	+1-858-6993322	info@accelachem.com	United States	21193	58
Alchem Pharmtech,Inc.	8485655694	sales@alchempharmtech.com	United States	63687	58
Wuhan Chemwish Technology Co., Ltd	027-67849912	sales@chemwish.com	CHINA	10821	58
CONIER CHEM AND PHARMA LIMITED	+8618523575427	sales@conier.com	China	49977	58
SIMAGCHEM CORP	+86-5922680277 +86-13806087780	sale@simagchem.com	China	17346	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58
Dayang Chem (Hangzhou) Co.,Ltd.	+86-0571-88938639 +8617705817739	info@dycnchem.com	China	52846	58
Labnetwork lnc.	+86-27-50766799 +8618062016861	contact@labnetwork.com	China	19987	58

Supplier	Advantage
Capot Chemical Co.,Ltd.	60
career henan chemical co	58
Accela ChemBio Inc.	58
Alchem Pharmtech,Inc.	58
Wuhan Chemwish Technology Co., Ltd	58
CONIER CHEM AND PHARMA LIMITED	58
SIMAGCHEM CORP	58
Hefei TNJ Chemical Industry Co.,Ltd.	58
Dayang Chem (Hangzhou) Co.,Ltd.	58
Labnetwork lnc.	58

View Lastest Price from ISOXAZOLE-5-CARBOXYLIC ACID manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2019-07-06	ISOXAZOLE-5-CARBOXYLIC ACID 21169-71-1	US $8.00 / kg	1kg	99%	10tons	Career Henan Chemical Co

ISOXAZOLE-5-CARBOXYLIC ACID
21169-71-1
US $8.00 / kg
99%
Career Henan Chemical Co

ISOXAZOLE-5-CARBOXYLIC ACID Spectrum

ISOXAZOLE-5-CARBOXYLIC ACID(21169-71-1)¹HNMR ISOXAZOLE-5-CARBOXYLIC ACID(21169-71-1)¹HNMR

21169-71-1(ISOXAZOLE-5-CARBOXYLIC ACID)Related Search:

METHYL ISOXAZOLE-5-CARBOXYLATE ISOXAZOLIDIN-3-ONE 4-Aminoisoxazole ISOXAZOL-3-YLMETHYL-METHYL-AMINE isoxazol-5-amine

C-ISOXAZOL-3-YL-METHYLAMINE ISOXAZOLE-5-CARBONYL CHLORIDE Methyl isonicotinate Ethyl isonicotinate 2-[[(3aS,4R,6S,6aR)-4-[7-[[(1R,2S)-2-(3,4-Difluorophenyl)cyclopropyl]amino]-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyrimidin-3-yl]-2,2-dimethyl-tetrahydro-3aH-cyclopenta[d][1,3]dioxol-6-yl]oxy]ethanol

Isoxazol-4-ylmethanamine oxalate ISOXAFLUTOLE ISOXAZOLO[5,4-B]PYRIDIN-3-YLAMINE 5-Isoxazolecarboxylicacid,ethylester(9CI) 1,2-oxazol-3-ylMethanaMine hydrochloride

3-AMINOISOXAZOLO[4,5-B]PYRAZINE Isoxazole-4-boronicacid C-ISOXAZOL-5-YL-METHYLAMINE HYDROCHLORIDE

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TIMTEC-BB SBB004319 AKOS PAO-1371 ISOXAZOLE-5-CARBOXYLIC ACID BUTTPARK 27\08-41 5-Isoxazolecarboxylic acid Isoxazole-5-carboxylic acid 98% Isoxazole-5-carboxylic acid ,98% 5-Carboxyisoxazole, 1,2-Oxazole-5-carboxylic acid, 5-Carboxy-1,2-oxazole 1,2-oxazole-5-carboxylic acid 5-Carboxy-1,2-oxazole 5-Carboxyisoxazole 5-isoxazolylcarboxylic acid Isoxazol-5-carbonsaeure Isozole-5-carboxylic acid Isoxazole 5-formic acid 5-Isoxazolecarboxylic acid (7CI, 8CI, 9CI, ACI) Isoxazol-5-carboxylic acid 21169-71-1 21169-71-7 C4H3NO ARYL ACID Building Blocks Isoxazoles Heterocyclic Building Blocks carboxylic acid Oxazole&Isoxazole Building Blocks Heterocyclic Building Blocks Isoxazoles