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Isocarboxazid

Also known as: Marplan, Benazide, Enerzer, Isocarbonazid, Isocarboxazida, Isocarboxazidum, Ro 5-0831, NSC 169893, 1-Benzyl-2-(5-methyl-3-isoxazolylcarbonyl)hydrazine, N'-Benzyl-5-methylisoxazole-3-carbohydrazide, 5-Methyl-3-isoxazolecarboxylic acid 2-benzylhydrazide

Isocarboxazid (CAS 59-63-2) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C12H13N3O2 and a molecular weight of 231.251 g/mol. Key properties include a melting point of 98-100ºC, a boiling point of 394.5±42.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 192.4±27.9 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
59-63-2
Jingsj CID
J-1969618-5
Molecular Formula
C12H13N3O2
Molecular Weight
231.251 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point98-100ºC
Boiling Point394.5±42.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point192.4±27.9 °C
Exact Mass231.100784
PSA67.16000
LogP1.03
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.573
Storage Conditions-20°C Freezer

GHS Safety & Compliance

Acute ToxicitySignal word: Danger
  • H301 — Toxic if swallowed

Activity & Biological Data

TargetIC50: 4.8 μM (rat brain monoamine oxidase)[1].
Additional Information[1]. MAXWELL DR, et al. Relative activity of some inhibitors of mono-amine oxidase in potentiating the action of tryptamine in vitro and in vivo. Br J Pharmacol Chemother. 1961 Dec;17:310-20.

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of Isocarboxazid?

The CAS number of Isocarboxazid is 59-63-2.

What are the molecular formula and molecular weight of Isocarboxazid?

Isocarboxazid has molecular formula C12H13N3O2 and molecular weight 231.251 g/mol.

Is Isocarboxazid hazardous?

Isocarboxazid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

What are the upstream and downstream products of Isocarboxazid?

For Isocarboxazid, Upstream Products: Methyl 5-methylisoxazole-3-carboxylate, Benzylhydrazine dihydrochloride, 5-Methyl-1,2-oxazole-3-carbohydrazide.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Isocarboxazid (CAS 59-63-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1969618-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.