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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 1810216Generated: October 23, 2026

3-Isoxazolamine

ISOXAZOL-3-AMINE · 1,2-oxazol-3-aMine · Isoxazolamine · 3-Isoxazolamine · 3-Amineisoxazole · 3-AMINOISOXAZOLE · isoxazol-3-ylamine · 3-Aminoisoxazole,95%

https://huagongshe.com/en/chemical/1810216

3-Isoxazolamine molecular structure

Identifiers & Physical Properties

CAS No.147815-03-0
Molecular formulaC3H4N2O
Average molar mass84.08 g/mol
Monoisotopic mass84.03236275 g/mol
SMILESNc1ccon1
InChIKeyRHFWLPWDOYJEAL-UHFFFAOYSA-N
PubChem CID1810216
EC No.605-748-7
DTXSIDDTXSID701024771

Chemical & Physical Properties

XLogP0
Topological polar surface area52.1
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms6
Formal charge0
Complexity48.1
Melting point148-150 °C(Solv: ethyl ether (60-29-7)ligroine (8032-32-4))
Boiling point226-228 °C(lit.)
Density1.138 g/mL at 25 °C(lit.)
Refractive indexn20/D 1.511(lit.)
Flash point>230 °F
Storage conditions2-8°C(protect from light)
pKa (acidity coefficient)2.27±0.10(Predicted)
Physical stateLiquid
ColorClear yellow
InChIInChI=1S/C3H4N2O/c4-3-1-2-6-5-3/h1-2H,(H2,4,5)
InChIKeyRHFWLPWDOYJEAL-UHFFFAOYSA-N
SMILESO1C=CC(N)=N1
CAS DataBase Reference1750-42-1(CAS DataBase Reference)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338
Target organsRespiratory system
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Hazard symbolsXi
Risk statements (R)36/37/38-37/38-36
Safety statements (S)26
Water hazard class (WGK)3
Hazard NoteIrritant
Customs code29349990
Storage class10 - Combustible liquids
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3

Safety & Regulations

GHS classificationWarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 46 reports by companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
CSL Reaction InformationCSL001423-AMINOISOXAZOLE3-aminoisoxazole can decompose explosively.N-O bondS (up to 1g)Heating the compound in the ARC led to a thermal runaway with a sudden increase in pressure. Onset temperature was 186 degrees C.
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Water hazard class (WGK)3
Customs code29349990
Risk statements (R)36/37/38-37/38-36
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
hazard_noteIrritant
Safety statements (S)26
Storage class10 - Combustible liquids
Target organsRespiratory system
GHS hazard statementsH315-H319-H335
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338

Applications & Uses

Uses

3-Aminoisoxazole (isoxazol-3-amine) may be used in the following studies:As a reagent in the synthesis of N-(4-(N-isoxazol-3-ylsulfamoyl)phenyl)acetamide.As a starting material in the synthesis of N-(isoxazol-3-yl)-N′-(carbomethoxy)thiourea.As a starting material in the synthesis of (Z)-2-(5-amino-1,2,4-thiadiazol-3-yl)-2-methoxy-iminoacetic acid, a side-chain of the fourth generation of cephem antibiotics.

General Description

3-Aminoisoxazole (isoxazol-3-amine) is a 3-substituted isoxazole derivative. It is a structural isomer of 5-aminoisoxazole.