G

Guanine

IUPAC: 2-amino-1,7-dihydropurin-6-one

C5H5N5O Organic Compounds CAS 73-40-5
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Quick Reference
Formula / NotationC5H5N5O
CAS Number73-40-5
Molecular Weight151.13
Melting Point360 dec °C
Boiling PointBOILING POINT: SUBLIMES
Solubility2080 mg/L (at 37 °C)
AppearanceSolid; [Merck Index] White crystals; [Acros Organics MSDS]
Also Known As2-amino-1,7-dihydropurin-6-one; 73-40-5; 2-Amino-6-hydroxypurine; 2-Aminohypoxanthine; Guanin; Mearlmaid; Guanine enol; Pearl essence; Stella Polaris; Dew Pearl
CategoryOrganic Compounds

What is Guanine?

Guanine is a 2-aminopurine carrying a 6-oxo substituent. It has a role as a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a human metabolite and an algal metabolite. It is a member of 2-aminopurines, an oxopurine and a purine nucleobase. It derives from a hydride of a 9H-purine.

Formula & Notation

C5H5N5O

IUPAC Name: 2-amino-1,7-dihydropurin-6-one

Other Names / Synonyms: 2-amino-1,7-dihydropurin-6-one; 73-40-5; 2-Amino-6-hydroxypurine; 2-Aminohypoxanthine; Guanin; Mearlmaid; Guanine enol; Pearl essence; Stella Polaris; Dew Pearl

Properties & Characteristics

Appearance: Solid; [Merck Index] White crystals; [Acros Organics MSDS]. Molecular formula: C5H5N5O. Molecular weight: 151.13 g/mol. Boiling point: BOILING POINT: SUBLIMES. Melting point: 360 dec °C. Solubility: 2080 mg/L (at 37 °C). LogP: -1.1.

Physical Data

PropertyValue
Melting Point360 dec °C
Boiling PointBOILING POINT: SUBLIMES
Molecular Weight151.13
Solubility2080 mg/L (at 37 °C)
AppearanceSolid; [Merck Index] White crystals; [Acros Organics 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 Guanine
Formula C5H5N5O
CAS Number 73-40-5
Molecular Weight 151.13
Synonyms 2-amino-1,7-dihydropurin-6-one; 73-40-5; 2-Amino-6-hydroxypurine; 2-Aminohypoxanthine; Guanin; Mearlmaid; Guanine enol; Pearl essence; Stella Polaris; Dew Pearl

Frequently Asked Questions

Guanine is a 2-aminopurine carrying a 6-oxo substituent. It has a role as a mouse metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a human metabolite and an algal metabolite. It is a member of 2-aminopurines, an oxopurine and a purine nucleobase. It derives from a hydride of a 9H-purine.

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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.