P

Pyrimidine

IUPAC: pyrimidine

C4H4N2 Organic Compounds CAS 289-95-2
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Quick Reference
Formula / NotationC4H4N2
CAS Number289-95-2
Molecular Weight80.09
Melting Point22 °C
Solubility1000 mg/mL at 25 °C
AppearanceLiquid or solid with a penetrating odor; mp = 20-22 deg C; [Merck Index] Clear, slightly brownish-yellow liquid; Hygroscopic; mp = 19 deg C; [Aldrich MSDS]
Also Known As289-95-2; 1,3-Diazine; Metadiazine; m-Diazine; Miazine; Pyrimidine base; 1,3-Diazin; K8CXK5Q32L; NSC-89305; DTXSID1051228
CategoryOrganic Compounds

What is Pyrimidine?

Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions. It has a role as a Daphnia magna metabolite. It is a diazine and a member of pyrimidines.

Formula & Notation

C4H4N2

IUPAC Name: pyrimidine

Other Names / Synonyms: 289-95-2; 1,3-Diazine; Metadiazine; m-Diazine; Miazine; Pyrimidine base; 1,3-Diazin; K8CXK5Q32L; NSC-89305; DTXSID1051228

Properties & Characteristics

Appearance: Liquid or solid with a penetrating odor; mp = 20-22 deg C; [Merck Index] Clear, slightly brownish-yellow liquid; Hygroscopic; mp = 19 deg C; [Aldrich MSDS]. Molecular formula: C4H4N2. Molecular weight: 80.09 g/mol. Melting point: 22 °C. Solubility: 1000 mg/mL at 25 °C. Vapor pressure: 12.9 [mmHg]. LogP: -0.4.

Physical Data

PropertyValue
Melting Point22 °C
Molecular Weight80.09
Solubility1000 mg/mL at 25 °C
AppearanceLiquid or solid with a penetrating odor; mp = 20-22 deg C; [Merck Index] Clear, slightly brownish-yellow liquid; Hygroscopic; mp = 19 deg C; [Aldrich MSDS]

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Pyrimidine
Formula C4H4N2
CAS Number 289-95-2
Molecular Weight 80.09
Synonyms 289-95-2; 1,3-Diazine; Metadiazine; m-Diazine; Miazine; Pyrimidine base; 1,3-Diazin; K8CXK5Q32L; NSC-89305; DTXSID1051228

Frequently Asked Questions

Pyrimidine is the parent compound of the pyrimidines; a diazine having the two nitrogens at the 1- and 3-positions. It has a role as a Daphnia magna metabolite. It is a diazine and a member of pyrimidines.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.