3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid

Also known as: 3-(tert-Butoxycarbonylamino)-4-phenylbutanoic acid, 3-(Boc-amino)-4-phenylbutanoic acid, Boc-β-homophenylalanine, β-(Boc-amino)benzenebutanoic acid, 3-((tert-Butoxycarbonyl)amino)-4-phenylbutyric acid

3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid (CAS 120378-17-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C15H21NO4 and a molecular weight of 279.332 g/mol. Key properties include a boiling point of 444.8±38.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 222.8±26.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 120378-17-8
Jingsj CID: J-1506917-7
Molecular Formula: C₁₅H₂₁NO₄
Molecular Weight: 279.332 g/mol
Category: Organic Acids
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Boiling Point	444.8±38.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	222.8±26.8 °C
Exact Mass	279.147064
PSA	75.63000
LogP	3.18
Vapor Pressure	0.0±1.1 mmHg at 25°C
Refractive Index	1.525

Customs & Trade Information

HS Code	2924299090
Summary	2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid?

The CAS number of 3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid is 120378-17-8.

What are the molecular formula and molecular weight of 3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid?

3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid has molecular formula C15H21NO4 and molecular weight 279.332 g/mol.

What are the upstream and downstream products of 3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid?

For 3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid, Upstream Products: Di-tert-butyl dicarbonate, DL-beta-Homophenylalanine.

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. "3-[(tert-Butoxycarbonyl)amino]-4-phenylbutanoic acid (CAS 120378-17-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1506917-7 (accessed 2026-11-09).

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