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1-(tert-Butoxycarbonyl)-2-pyrrolidinone

Also known as: tert-Butyl 2-oxo-1-pyrrolidinecarboxylate, tert-Butyl 2-oxopyrrolidine-1-carboxylate, 2-Methyl-2-propanyl 2-oxo-1-pyrrolidinecarboxylate, 2-OXO-PYRROLIDINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER, N-BOC-1-AZACYCLOPENTAN-2-ONE, 1-Pyrrolidinecarboxylic acid, 2-oxo-, 1,1-dimethylethyl ester, MFCD00674099, AIDS143102

1-(tert-Butoxycarbonyl)-2-pyrrolidinone (CAS 85909-08-6) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H15NO3 and a molecular weight of 185.220 g/mol. Key properties include a boiling point of 302.7±11.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 136.9±19.3 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
85909-08-6
Jingsj CID
J-44304-9
Molecular Formula
C9H15NO3
Molecular Weight
185.220 g/mol
Category
Ketones
Last updated
8/21/2026
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Physicochemical Properties

Boiling Point302.7±11.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point136.9±19.3 °C
Exact Mass185.105194
PSA46.61000
LogP0.03
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.486

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 1-(tert-Butoxycarbonyl)-2-pyrrolidinone?

The CAS number of 1-(tert-Butoxycarbonyl)-2-pyrrolidinone is 85909-08-6.

What are the molecular formula and molecular weight of 1-(tert-Butoxycarbonyl)-2-pyrrolidinone?

1-(tert-Butoxycarbonyl)-2-pyrrolidinone has molecular formula C9H15NO3 and molecular weight 185.220 g/mol.

Is 1-(tert-Butoxycarbonyl)-2-pyrrolidinone hazardous?

1-(tert-Butoxycarbonyl)-2-pyrrolidinone has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 1-(tert-Butoxycarbonyl)-2-pyrrolidinone?

For 1-(tert-Butoxycarbonyl)-2-pyrrolidinone, Upstream Products: 2-Pyrrolidinone, Di-tert-butyl dicarbonate, tert-Butyl N-(4-hydroxybutyl)carbamate; Downstream Products: Boc-GABA-OH, tert-Butyl 2-methoxypyrrolidine-1-carboxylate, Methyl 4-((tert-butoxycarbonyl)amino)butanoate.

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

Last updated:

How to cite: Jingsj. "1-(tert-Butoxycarbonyl)-2-pyrrolidinone (CAS 85909-08-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44304-9 (accessed 2026-11-09).

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