Noroxymorphone

Also known as: (5α)-4,5-epoxy-3,14-dihydroxymorphinan-6-one, 7,8-Dihydro-14-hydroxy-normorphinone, Naloxone EP Impurity A, Naltrexone EP Impurity B, Noroxymorphone hydrochloride, (-)-Noroxymorphone, EN-3169

Noroxymorphone (CAS 33522-95-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C16H17NO4 and a molecular weight of 287.31000 g/mol. Key properties include a melting point of >265°C (dec.), a boiling point of 552.1ºC at 760mmHg, a density of 1.54g/cm3 and a flash point of 287.7ºC. It is classified under GHS with signal word Danger and hazard statements H225 — Highly flammable liquid and vapour, H301 — Toxic if swallowed and H311 — Toxic in contact with skin. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 33522-95-1
Jingsj CID: J-1183571-5
Molecular Formula: C₁₆H₁₇NO₄
Molecular Weight: 287.31000 g/mol
Category: Ketones
Last updated: 11/3/2026

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Physicochemical Properties

Melting Point	>265°C (dec.)
Boiling Point	552.1ºC at 760mmHg
Density	1.54g/cm3
Flash Point	287.7ºC
Exact Mass	287.11600
PSA	78.79000
LogP	0.73180
Refractive Index	1.722
Storage Conditions	Controlled Substance, -20°C Freezer

GHS Safety & Compliance

Flammable / Acute Toxicity / Health HazardSignal word: Danger

H225 — Highly flammable liquid and vapour
H301 — Toxic if swallowed
H311 — Toxic in contact with skin
H331 — Toxic if inhaled
H370 — Causes damage to organs

Frequently Asked Questions

What is the CAS number of Noroxymorphone?

The CAS number of Noroxymorphone is 33522-95-1.

What are the molecular formula and molecular weight of Noroxymorphone?

Noroxymorphone has molecular formula C16H17NO4 and molecular weight 287.31000 g/mol.

Is Noroxymorphone hazardous?

Noroxymorphone has GHS signal word Danger and hazard statements H225 — Highly flammable liquid and vapour; H301 — Toxic if swallowed; H311 — Toxic in contact with skin.

What are the upstream and downstream products of Noroxymorphone?

For Noroxymorphone, Upstream Products: Naloxone; Downstream Products: Naloxone, naltrexone, Naltrexone hydrochloride.

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

Last updated: 11/3/2026

How to cite: Jingsj. "Noroxymorphone (CAS 33522-95-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1183571-5 (accessed 2026-11-09).

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