(±)-2-Propyl-4-pentenoic acid

(±)-2-丙基-4-戊烯酸

Also known as: (+/-)-2-Propyl-4-pentenoic Acid, 2-PROPYL-4-PENTENOIC ACID, 2-allylpentanoicacid, 2-allylvalericacid, 2-n-Propyl-4-pentenoic Acid, 2-propyl-4-pentenoic acid, 2-propyl-4-pentenoicaci, 4-ENEVALPROIC ACID, 4-en-valproicacid, 4-ene-VPA

(±)-2-Propyl-4-pentenoic acid (CAS 1575-72-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H14O2 and a molecular weight of 142.19600 g/mol. It is also known as (+/-)-2-Propyl-4-pentenoic Acid, 2-PROPYL-4-PENTENOIC ACID and 2-allylpentanoicacid. Key properties include a boiling point of 228.8ºC at 760mmHg, a density of 0.943g/cm3 and a flash point of 126.2ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1575-72-0
Jingsj CID: J-89638-4
Molecular Formula: C₈H₁₄O₂
Chinese Name: (±)-2-丙基-4-戊烯酸
Molecular Weight: 142.19600 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	228.8ºC at 760mmHg
Density	0.943g/cm3
Flash Point	126.2ºC
Exact Mass	142.09900
PSA	37.30000
LogP	2.06340
Vapor Pressure	0.0257mmHg at 25°C
Refractive Index	1.448
Storage Conditions	2-8°C

GHS Safety & Compliance

Acute ToxicitySignal word: Danger

H301 — Toxic if swallowed

Activity & Biological Data

Additional Information	[1]. W Tang, et, al. A comparative investigation of 2-propyl-4-pentenoic acid (4-ene VPA) and its alpha-fluorinated analogue: phase II metabolism and pharmacokinetics. Drug Metab Dispos. 1997 Feb;25(2):219-27. [2]. Gofflot F, et, al. In vitro neuroteratogenicity of valproic acid and 4-en-VPA. Neurotoxicol Teratol. Jul-Aug 1995;17(4):425-35.

Customs & Trade Information

HS Code	2916190090
Summary	2916190090 unsaturated acyclic monocarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives。supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward)。VAT:17.0%。tax rebate rate:9.0%。MFN tariff:6.5%。general tariff:30.0%

Frequently Asked Questions

What is the CAS number of (±)-2-Propyl-4-pentenoic acid?

The CAS number of (±)-2-Propyl-4-pentenoic acid is 1575-72-0.

What are the molecular formula and molecular weight of (±)-2-Propyl-4-pentenoic acid?

(±)-2-Propyl-4-pentenoic acid has molecular formula C8H14O2 and molecular weight 142.19600 g/mol.

Is (±)-2-Propyl-4-pentenoic acid hazardous?

(±)-2-Propyl-4-pentenoic acid has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.

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

Last updated: 8/21/2026

How to cite: Jingsj. "(±)-2-Propyl-4-pentenoic acid (CAS 1575-72-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-89638-4 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.