3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid

Also known as: 3-amino-4-phenoxy-5-sulfamoylbenzoic acid, Desbutylbumetanide, Desbutyl Bumetanide, Bumetanide EP Impurity B, Bumetanide USP Related Compound A, PF 1578, 3-amino-4-phenoxy-5-sulfamoyl-benzoic acid, 3-amino-4-phenoxy-5-sulfamylbenzoic acid, 3-amino-4-phenoxy-5-sulphamyl-benzoic acid, 3-sulphamoyl-4-phenoxy-5-amino-benzoic acid, BUTMETANIDERELATEDA, BuMetanide related compound A (Desbutyl)

3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid (CAS 28328-54-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H12N2O5S and a molecular weight of 308.31000 g/mol. Key properties include a boiling point of 555.3ºC at 760mmHg, a density of 1.512g/cm3 and a flash point of 289.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 28328-54-3
Jingsj CID: J-1003945-9
Molecular Formula: C₁₃H₁₂N₂O₅S
Molecular Weight: 308.31000 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	555.3ºC at 760mmHg
Density	1.512g/cm3
Flash Point	289.6ºC
Exact Mass	308.04700
PSA	141.09000
LogP	3.76900
Vapor Pressure	3.65E-13mmHg at 25°C
Refractive Index	1.663

Customs & Trade Information

HS Code	2935009090
Summary	2935009090 other sulphonamides VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:35.0%

Frequently Asked Questions

What is the CAS number of 3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid?

The CAS number of 3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid is 28328-54-3.

What are the molecular formula and molecular weight of 3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid?

3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid has molecular formula C13H12N2O5S and molecular weight 308.31000 g/mol.

What are the upstream and downstream products of 3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid?

For 3-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid, Upstream Products: 3-nitro-4-phenoxy-5-sulfamoylbenzoic acid, Phenol, 4-Chloro-3-nitro-5-sulfamoylbenzoic acid; Downstream Products: Benzyl bromoacetate.

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-amino-5-(aminosulfonyl)-4-phenoxybenzoic acid (CAS 28328-54-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1003945-9 (accessed 2026-11-09).

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