4-Pentenoic acid, 1,1-dimethylethyl ester

Also known as: tert-Butyl 4-pentenoate, tert-Butyl pent-4-enoate, t-Butyl pent-4-enoate, 1,1-Dimethylethyl 4-pentenoate, Pent-4-enoic acid tert-butyl ester, t-Butyl 4-pentenoate, 4-Pentenoic acid, 1,1-dimethylethyl ester

4-Pentenoic acid, 1,1-dimethylethyl ester (CAS 32400-25-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H16O2 and a molecular weight of 156.22200 g/mol. Key properties include a boiling point of 160.2ºC at 760mmHg, a density of 0.889g/cm3 and a flash point of 53.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 32400-25-2
Jingsj CID: J-1180771-9
Molecular Formula: C₉H₁₆O₂
Molecular Weight: 156.22200 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	160.2ºC at 760mmHg
Density	0.889g/cm3
Flash Point	53.1ºC
Exact Mass	156.11500
PSA	26.30000
LogP	2.29430
Refractive Index	1.428

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 4-Pentenoic acid, 1,1-dimethylethyl ester?

The CAS number of 4-Pentenoic acid, 1,1-dimethylethyl ester is 32400-25-2.

What are the molecular formula and molecular weight of 4-Pentenoic acid, 1,1-dimethylethyl ester?

4-Pentenoic acid, 1,1-dimethylethyl ester has molecular formula C9H16O2 and molecular weight 156.22200 g/mol.

What are the upstream and downstream products of 4-Pentenoic acid, 1,1-dimethylethyl ester?

For 4-Pentenoic acid, 1,1-dimethylethyl ester, Upstream Products: 4-Pentenoic acid, tert-Butanol, Isobutylene; Downstream Products: (2S)-8-tert-butoxy-2-(9H-fluoren-9-ylmethoxycarbonylamino)-8-oxooctanoic acid, tert-butyl 4-oxobutanoate.

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. "4-Pentenoic acid, 1,1-dimethylethyl ester (CAS 32400-25-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1180771-9 (accessed 2026-11-09).

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