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tert-Butyl 3-oxoazetidine-1-carboxylate

Also known as: 1-(tert-Butoxycarbonyl)-3-azetidinone, 1-Boc-3-azetidinone, 1-Boc-azetidin-3-one, 3-Oxoazetidine-1-carboxylic acid tert-butyl ester, N-Boc-3-azetidinone, N-Boc-3-oxoazetidine, tert-Butyl 3-oxoazetidine-1-carboxylate, MFCD01861741

tert-Butyl 3-oxoazetidine-1-carboxylate (CAS 398489-26-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C8H13NO3 and a molecular weight of 171.19 g/mol. Key properties include a melting point of 49-52ºC, a boiling point of 251.3±33.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 105.8±25.4 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H315 — Causes skin irritation and H318 — Causes serious eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
398489-26-4
Jingsj CID
J-1955334-5
Molecular Formula
C8H13NO3
Molecular Weight
171.19 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point49-52ºC
Boiling Point251.3±33.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point105.8±25.4 °C
Exact Mass171.089539
PSA46.61000
LogP-0.34
Vapor Pressure0.0±0.5 mmHg at 25°C
Refractive Index1.493
Storage ConditionsStore under inert gas

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger
  • H302 — Harmful if swallowed
  • H315 — Causes skin irritation
  • H318 — Causes serious eye damage
  • H335 — May cause respiratory irritation

Customs & Trade Information

HS Code2933990090
Summary2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 tert-Butyl 3-oxoazetidine-1-carboxylate?

The CAS number of tert-Butyl 3-oxoazetidine-1-carboxylate is 398489-26-4.

What are the molecular formula and molecular weight of tert-Butyl 3-oxoazetidine-1-carboxylate?

tert-Butyl 3-oxoazetidine-1-carboxylate has molecular formula C8H13NO3 and molecular weight 171.19 g/mol.

Is tert-Butyl 3-oxoazetidine-1-carboxylate hazardous?

tert-Butyl 3-oxoazetidine-1-carboxylate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H315 — Causes skin irritation; H318 — Causes serious eye damage.

What are the upstream and downstream products of tert-Butyl 3-oxoazetidine-1-carboxylate?

For tert-Butyl 3-oxoazetidine-1-carboxylate, Upstream Products: tert-Butyl 3-hydroxyazetidine-1-carboxylate, Di-tert-butyl dicarbonate; Downstream Products: tert-Butyl 3-hydroxy-3-methylazetidine-1-carboxylate, tert-butyl 3-hydroxy-3-(nitromethyl)azetidine-1-carboxylate, tert-butyl 3-(2-ethoxy-2-oxoethylidene)azetidine-1-carboxylate.

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

Last updated:

How to cite: Jingsj. "tert-Butyl 3-oxoazetidine-1-carboxylate (CAS 398489-26-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1955334-5 (accessed 2026-11-09).

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