D

Diazepam

IUPAC: 7-chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one

C16H13ClN2O Organic Compounds CAS 439-14-5
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Quick Reference
Formula / NotationC16H13ClN2O
CAS Number439-14-5
Molecular Weight284.74
Melting Point257 to 259 °F (NTP, 1992)
Solubilityless than 1 mg/mL at 68 °F (NTP, 1992)
AppearanceDiazepam is an off-white to yellow crystalline powder. Practically odorless. Tasteless at first with a bitter aftertaste. (NTP, 1992)
Also Known As7-chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one; Valium; 439-14-5; Ansiolisina; Diazemuls; Apaurin; Faustan; Relanium; Seduxen; Sibazon
CategoryOrganic Compounds

What is Diazepam?

Diazepam can cause developmental toxicity according to state or federal government labeling requirements.

Formula & Notation

C16H13ClN2O

IUPAC Name: 7-chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one

Other Names / Synonyms: 7-chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one; Valium; 439-14-5; Ansiolisina; Diazemuls; Apaurin; Faustan; Relanium; Seduxen; Sibazon

Properties & Characteristics

Appearance: Diazepam is an off-white to yellow crystalline powder. Practically odorless. Tasteless at first with a bitter aftertaste. (NTP, 1992). Molecular formula: C16H13ClN2O. Molecular weight: 284.74 g/mol. Melting point: 257 to 259 °F (NTP, 1992). Solubility: less than 1 mg/mL at 68 °F (NTP, 1992). LogP: 3.

Physical Data

PropertyValue
Melting Point257 to 259 °F (NTP, 1992)
Molecular Weight284.74
Solubilityless than 1 mg/mL at 68 °F (NTP, 1992)
AppearanceDiazepam is an off-white to yellow crystalline powder. Practically odorless. Tasteless at first with a bitter aftertaste. (NTP, 1992)

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 Diazepam
Formula C16H13ClN2O
CAS Number 439-14-5
Molecular Weight 284.74
Synonyms 7-chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one; Valium; 439-14-5; Ansiolisina; Diazemuls; Apaurin; Faustan; Relanium; Seduxen; Sibazon

Frequently Asked Questions

Diazepam can cause developmental toxicity according to state or federal government labeling requirements.

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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.