(3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid

Also known as: (S)-1-Boc-3-pyrrolidinecarboxylic acid, (S)-1-(tert-Butoxycarbonyl)pyrrolidine-3-carboxylic acid, 1-N-Boc-beta-proline, N-Boc-L-beta-proline, BOC-L-B-PROLINE, 1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid, 1-Boc-pyrrolidine-3-carboxylic acid, (3S)-Boc-β-Pro-OH, MFCD03094728

(3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid (CAS 140148-70-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H17NO4 and a molecular weight of 215.246 g/mol. Key properties include a boiling point of 337.2±35.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 157.7±25.9 °C. It is classified under GHS with signal word Danger and hazard statements H318 — Causes serious eye damage and H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 140148-70-5
Jingsj CID: J-1075794-5
Molecular Formula: C₁₀H₁₇NO₄
Molecular Weight: 215.246 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	337.2±35.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	157.7±25.9 °C
Exact Mass	215.115753
PSA	66.84000
LogP	0.65
Vapor Pressure	0.0±1.6 mmHg at 25°C
Refractive Index	1.503
Storage Conditions	Store at 0-5°C

GHS Safety & Compliance

Corrosion / Environmental HazardSignal word: Danger

H318 — Causes serious eye damage
H400 — Very toxic to aquatic life

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. 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 (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid?

The CAS number of (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid is 140148-70-5.

What are the molecular formula and molecular weight of (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid?

(3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid has molecular formula C10H17NO4 and molecular weight 215.246 g/mol.

Is (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid hazardous?

(3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid has GHS signal word Danger and hazard statements H318 — Causes serious eye damage; H400 — Very toxic to aquatic life.

What are the upstream and downstream products of (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid?

For (3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid, Downstream Products: (S)-Methyl pyrrolidine-3-carboxylate hydrochloride, (S)-1-Boc-pyrrolidine-3-carboxylic acid methyl ester, tert-Butyl (S)-3-(iodomethyl)pyrrolidine-1-carboxylate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(3S)-1-(tert-Butoxycarbonyl)-3-pyrrolidinecarboxylic acid (CAS 140148-70-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1075794-5 (accessed 2026-11-09).

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