4-Nitro-benzenesulfonic acid

Name: 4-Nitro-benzenesulfonic acid
Brand: Vaqora Chemicals
SKU: VQ-047726

About 4-Nitro-benzenesulfonic acid

Listed under CAS 138-42-1, 4-Nitro-benzenesulfonic acid is an impurity of Celecoxib available from Vaqora Chemicals. The compound has the formula C6H5NO5S, corresponding to a molecular weight of 203.17 g/mol. It is also known as Benzenesulfonic acid, 4-nitro- or p-Nitrobenzenesulfonic acid.

It is supplied as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

As a characterised impurity of Celecoxib, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, 4-Nitro-benzenesulfonic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Celecoxib

View every impurity, metabolite and intermediate we list for Celecoxib.

Celecoxib impurities

Specifications & identifiers

Chemical identifiers
Product name	4-Nitro-benzenesulfonic acid
Catalogue No.	VQ-047726
CAS Number	138-42-1
IUPAC name	4-nitrobenzenesulfonic acid
Molecular formula	C₆H₅NO₅S
Molecular weight	203.17 g/mol
Exact mass	202.9888
Grade	Reference Standard
HSN code	38229090
InChIKey	SPXOTSHWBDUUMT-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1[N+](=O)[O-])S(=O)(=O)O
PubChem CID	8740

Physical properties
Physical form	Solid
LogP (XLogP3)	0.8
H-bond donors / acceptors	1 / 5
TPSA	109 Å²
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

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

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 is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 4-Nitro-benzenesulfonic acid?

The CAS Registry Number of 4-Nitro-benzenesulfonic acid is 138-42-1. It is also known as Benzenesulfonic acid, 4-nitro-, p-Nitrobenzenesulfonic acid, 4-Nitrobenzenesulfonate.

What is the molecular formula and molecular weight of 4-Nitro-benzenesulfonic acid?

4-Nitro-benzenesulfonic acid has the molecular formula C6H5NO5S and a molecular weight of 203.17 g/mol. Its IUPAC name is 4-nitrobenzenesulfonic acid.

What is 4-Nitro-benzenesulfonic acid used for?

4-Nitro-benzenesulfonic acid is supplied as a characterised reference material related to Celecoxib. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 4-Nitro-benzenesulfonic acid can I order?

We supply 4-Nitro-benzenesulfonic acid in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 4-Nitro-benzenesulfonic acid?

Yes. Every lot of 4-Nitro-benzenesulfonic acid is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 4-Nitro-benzenesulfonic acid be shipped internationally?

Yes. 4-Nitro-benzenesulfonic acid is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.