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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 558521Generated: October 23, 2026

2-Aminooxazole

oxazol-2-amine · 2-AMINO-OXAZOLE · 2-OxazolaMine · 2-AMINOXAZOLE · 1,3-OXAZOL-2-AMINE · Oxazole-2-amine · OXAZOL-2-YLAMINE · OXAZOLE-2-YLAMINE

https://huagongshe.com/en/chemical/558521

2-Aminooxazole molecular structure

Identifiers & Physical Properties

CAS No.4570-45-0
Molecular formulaC3H4N2O
Average molar mass84.08 g/mol
Monoisotopic mass84.03236275 g/mol
SMILESNc1ncco1
InChIKeyACTKAGSPIFDCMF-UHFFFAOYSA-N
PubChem CID558521
EC No.610-269-1
DTXSIDDTXSID00339766

Chemical & Physical Properties

XLogP-0.2
Topological polar surface area52.1
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms6
Formal charge0
Complexity48.1
LogP (partition coefficient)-0.18
Melting point93-95℃
Boiling point186.7±23.0 °C(Predicted)
Density1.241±0.06 g/cm3(Predicted)
Storage conditions2-8°C
SolubilityDMSO (Soluble), Ethyl Acetate (Slightly)
Physical stateSolid
pKa (acidity coefficient)5.45±0.10(Predicted)
ColorOff-White to Pale Yellow
λmax219nm(MeOH)(lit.)
InChIInChI=1S/C3H4N2O/c4-3-5-1-2-6-3/h1-2H,(H2,4,5)
InChIKeyACTKAGSPIFDCMF-UHFFFAOYSA-N
SMILESO1C=CN=C1N
CAS DataBase Reference4570-45-0(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
Hazard symbolsXi
Risk statements (R)34-36/37/38
Safety statements (S)26-36/37/39-45-24/25
UN transport number2735
Water hazard class (WGK)3
Hazard classIRRITANTEye Irrit. 2Skin Irrit. 2STOT SE 3
Customs code29349990
Storage class11 - Combustible Solids

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 45 reports by companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
Water hazard class (WGK)3
UN transport number2735
Customs code29349990
Risk statements (R)34-36/37/38
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
Safety statements (S)26-36/37/39-45-24/25
Hazard classIRRITANTEye Irrit. 2Skin Irrit. 2STOT SE 3
Storage class11 - Combustible Solids
Target organsRespiratory system
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338

Applications & Uses

Uses

2-Aminooxazole is a chemical reagent used in the synthesis of novel inhibitors of the kinetoplastid Trypanosoma brucei.