4-Nitro-benzenesulfonic acid

Name: 4-Nitro-benzenesulfonic acid
Brand: Zemixal
SKU: ZX-038926

Reference StandardAvailable on request

Buy 4-Nitro-benzenesulfonic acid (CAS 138-42-1) from Zemixal: C6H5NO5S, COA and SDS with every lot, worldwide shipping. Part of our API Impurities range.

Pack sizes

4-Nitro-benzenesulfonic acid chemical structure

CAS number138-42-1

FormulaC₆H₅NO₅S

Molar mass203.17 g/mol

Physical formSolid

HS code38229090

InChIKeySPXOTSHWBDUUMT-UHFFFAOYSA-N

IUPAC name4-nitrobenzenesulfonic acid

About 4-Nitro-benzenesulfonic acid

Analytical teams working on Celecoxib use 4-Nitro-benzenesulfonic acid as a qualified comparison standard. Identity at a glance (Reference Standard): CAS 138-42-1, formula C6H5NO5S and molar mass 203.17 g/mol. It is handled as a solid.

Use cases we see most often

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Handling and storage

It carries the GHS signal word Danger (H314, H317 and H318), so wear gloves and eye protection and work with good ventilation.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Each lot travels with a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Celecoxib

See every impurity, metabolite and related compound we list for this API.

Celecoxib standards

Typical uses

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of 4-Nitro-benzenesulfonic acid
Product name	4-Nitro-benzenesulfonic acid
Catalogue number	ZX-038926
CAS number	138-42-1
IUPAC name	4-nitrobenzenesulfonic acid
Molecular formula	C₆H₅NO₅S
Molar mass	203.17 g/mol
Exact mass	202.9888
Grade	Reference Standard
Physical form	Solid
XLogP3	0.8
H-bond donors / acceptors	1 / 5
Topological polar surface area	109 Å²
HS code	38229090
InChIKey	SPXOTSHWBDUUMT-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1[N+](=O)[O-])S(=O)(=O)O
PubChem CID	8740
Synonyms	Benzenesulfonic acid, 4-nitro-, p-Nitrobenzenesulfonic acid, 4-Nitrobenzenesulfonate, p-Nitrophenylsulfonic acid, 4-Nitrobenzenesulphonic acid, Benzenesulfonic acid, p-nitro-, p-NBS, para-nitrobenzenesulfonate, 4-nitrobenzene-1-sulfonic acid, p-nitrobenzensulfonic acid, p-Nitrobenzenesulphonic acid, p-nitrobenzene-sulfonic acid

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

Corrosive

Irritant or harmful

Signal word Danger

H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage

Precautionary statements P260, P261, P264, P264 + P265, P272, P280, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P321, P333 + P317, P362 + P364, P363, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of 4-Nitro-benzenesulfonic acid
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about 4-Nitro-benzenesulfonic acid

Which CAS number identifies 4-Nitro-benzenesulfonic acid?

4-Nitro-benzenesulfonic acid is registered under CAS 138-42-1. You may also see it listed as Benzenesulfonic acid, 4-nitro-, p-Nitrobenzenesulfonic acid, 4-Nitrobenzenesulfonate. Our catalogue number for this item is ZX-038926.

What are the formula and molar mass of 4-Nitro-benzenesulfonic acid?

For 4-Nitro-benzenesulfonic acid, its formula is C6H5NO5S and its molar mass is 203.17 g/mol. The systematic (IUPAC) name is 4-nitrobenzenesulfonic acid. InChIKey SPXOTSHWBDUUMT-UHFFFAOYSA-N lets you match it in any structure database.

How is 4-Nitro-benzenesulfonic acid used in pharmaceutical QC?

4-Nitro-benzenesulfonic acid is a characterised reference material linked to Celecoxib. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.

What grade and pack sizes are available for 4-Nitro-benzenesulfonic acid?

This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.

Which documents come with 4-Nitro-benzenesulfonic acid?

Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.

Can Zemixal ship 4-Nitro-benzenesulfonic acid to my country?

Yes. Because 4-Nitro-benzenesulfonic acid is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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