Anodyne

Valium
Diazepam
Molecular structure via molpic based on CDK
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Physical properties
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284.74 g/mol [1]
AppearanceColorless to light yellow crysytals [1]
OdorPractically no odor [1]
Melting point257 to 259 °F (NTP, 1992) [1]
DecompositionWhen heated to decomp it emits very toxic fumes of hydrogen chloride and NO(x) [1]
Solubilityless than 1 mg/mL at 68 °F (NTP, 1992) [1]
[1]
Structural Identifiers
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C16H13ClN2[1]
7-chloro-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one [1]
CN1C(=O)CN=C(C2=C1C=CC(=C2)Cl)C3=CC=CC=C3 [1]
InChI=1S/C16H13ClN2O/c1-19-14-8-7-12(17)9-13(14)16(18-10-15(19)20)11-5-3-2-4-6-11/h2-9H,10H2,1H3 [1]
InChIKeyAAOVKJBEBIDNHE-UHFFFAOYSA-N [1]
Dosing
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Elimination half-life(50 hours); 20–100 hours (32–200 hours for main active metabolite desmethyldiazepam)[5]

Diazepam

Diazepam (also known as Ansiolisina, Alboral, Methyldiazepinone, Ansiolin, Apozepam, Atensine, Bensedin, Bialzepam, Calmocitene or Calmpose) is a substance of the benzodiazepine class.

Chemistry

Salts []

Diazepam is typically found in the form of its hydrochloride salt.

 []

Diazepam is a achiral mixture

Anodyne Usernotes
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0xea / Diazepam via Oral and Intravenous; Effective ; cancels out <a href=/class/stimulant>Stimulants</a>

Experience reports []

Legal status []

  • Australia: Diazepam is a S4 substance.[3]
  • Brazil: Diazepam is a B1 substance.
  • Canada: Diazepam is a Schedule IV substance.
  • Germany: Diazepam is a prescription only/Anlage III substance.
  • New Zealand: Diazepam is a Class C substance.
  • United Kingdom: Diazepam is a Class C substance.[4]
  • United States: Diazepam is a Schedule I under the "Controlled Substances Act (CSA)".
  • United Nations: Diazepam is a schedule IV substance.

References []

  1. National Center for Biotechnology Information. PubChem Compound Summary for CID 3016, Diazepam. Accessed June 25, 2025. https://pubchem.ncbi.nlm.nih.gov/compound/3016

  2. U.S. Food and Drug Administration; National Center for Advancing Translational Sciences. Diazepam. UNII: Q3JTX2Q7TU. Global Substance Registration System. Accessed June 25, 2025. https://gsrs.ncats.nih.gov/ginas/app/beta/substances/Q3JTX2Q7TU

  3. Valium. January 31, 2020. Accessed June 25, 2025. https://www.nps.org.au/medicine-finder/valium-tablets#full-pi

  4. Accessed June 25, 2025. https://www.legislation.gov.uk/ukpga/1971/38/schedule/2/part/III/paragraph/1

  5. Diazepam Tablets BP 10 mgs – Summary of Product Characteristics (SmPC). September 16, 2019. Accessed June 25, 2025. https://www.medicines.org.uk/emc/product/4522/smpc