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tert-Butyl (S)-2-methylpiperidine-1-carboxylate

Also known as: (S)-(+)-N-(Boc)-2-Methylpiperidine, (S)-(+)-N-TBOC-2-METHYLPIPERIDINE, (S)-(+)-N-TERT-(BUTOXYCARBONYL)-2-METHYLPIPERIDINE, 1-Piperidinecarboxylic acid, 2-methyl-, 1,1-dimethylethyl ester, (2S)-, tert-Butyl (2S)-2-methylpiperidine-1-carboxylate, (S)-tert-Butyl 2-methylpiperidine-1-carboxylate, MFCD06799025

tert-Butyl (S)-2-methylpiperidine-1-carboxylate (CAS 183903-99-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H21NO2 and a molecular weight of 199.29000 g/mol. Key properties include a boiling point of 54-56ºC0.05 mm Hg(lit.), a density of 0.937 g/mL at 25ºC(lit.) and a flash point of 101.7 °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 Nov 2, 2026.

CAS No.
183903-99-3
Jingsj CID
J-48396-5
Molecular Formula
C11H21NO2
Molecular Weight
199.29000 g/mol
Category
Pharma Intermediates
Last updated
11/2/2026
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Physicochemical Properties

Boiling Point54-56ºC0.05 mm Hg(lit.)
Density0.937 g/mL at 25ºC(lit.)
Flash Point101.7 °C
Exact Mass199.15700
PSA29.54000
LogP2.73380
Vapor Pressure0.0167mmHg at 25°C
Refractive Indexn20/D 1.453(lit.)

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 tert-Butyl (S)-2-methylpiperidine-1-carboxylate?

The CAS number of tert-Butyl (S)-2-methylpiperidine-1-carboxylate is 183903-99-3.

What are the molecular formula and molecular weight of tert-Butyl (S)-2-methylpiperidine-1-carboxylate?

tert-Butyl (S)-2-methylpiperidine-1-carboxylate has molecular formula C11H21NO2 and molecular weight 199.29000 g/mol.

Is tert-Butyl (S)-2-methylpiperidine-1-carboxylate hazardous?

tert-Butyl (S)-2-methylpiperidine-1-carboxylate 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 tert-Butyl (S)-2-methylpiperidine-1-carboxylate?

For tert-Butyl (S)-2-methylpiperidine-1-carboxylate, Upstream Products: Di-tert-butyl dicarbonate, (S)-2-Methylpiperidine-L-tartrate, (S)-(+)-2-Methylpiperidine; Downstream Products: (S)-(+)-2-Methylpiperidine.

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 (S)-2-methylpiperidine-1-carboxylate (CAS 183903-99-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48396-5 (accessed 2026-11-09).

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