5-[2-Formyl-5-(hydroxymethyl)-1H-pyrrol-1-yl]-2-hydroxybenzoic Acid
- CAS
- 876903-48-9
- Formula
- C13H11NO5
- MW
- 261.23 g/mol
ZX-030508
API Impurities
2-Aminobenzenesulfonic acid
Reference StandardAvailable on request
Order 2-Aminobenzenesulfonic acid (CAS 88-21-1) online at Zemixal. Request a quote with price, lead time and documents. Part of our API Impurities range.
CAS number88-21-1
FormulaC6H7NO3S
Molar mass173.19 g/mol
Physical formSolid
HS code38229090
InChIKeyZMCHBSMFKQYNKA-UHFFFAOYSA-N
IUPAC name2-aminobenzenesulfonic acid
About 2-Aminobenzenesulfonic acid
2-Aminobenzenesulfonic acid is supplied by Zemixal as a characterised reference material for Mesalazine analysis. Identity at a glance (Reference Standard): CAS 88-21-1, formula C6H7NO3S and molar mass 173.19 g/mol. It is handled as a solid.
Where it is used
- Analytical method development
- Method validation (AMV)
- QC release testing
- ANDA / DMF filings
Handling and storage
Hazard communication follows GHS (Danger: H314 and H319). Our SDS lists exposure controls and first-aid measures.
Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and custom quantities are quoted on request. Each lot travels with a certificate of analysis with characterisation data. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.
Reference standards for Mesalazine
See every impurity, metabolite and related compound we list for this API.
Mesalazine standardsTypical uses
- Analytical method development
- Method validation (AMV)
- QC release testing
- ANDA / DMF filings
Applications
Specifications and identifiers
| Product name | 2-Aminobenzenesulfonic acid |
|---|---|
| Catalogue number | ZX-030509 |
| CAS number | 88-21-1 |
| IUPAC name | 2-aminobenzenesulfonic acid |
| Molecular formula | C6H7NO3S |
| Molar mass | 173.19 g/mol |
| Exact mass | 173.0147 |
| Grade | Reference Standard |
| Physical form | Solid |
| XLogP3 | 0.4 |
| H-bond donors / acceptors | 2 / 4 |
| Topological polar surface area | 88.8 Ų |
| HS code | 38229090 |
| InChIKey | ZMCHBSMFKQYNKA-UHFFFAOYSA-N |
| SMILES | C1=CC=C(C(=C1)N)S(=O)(=O)O |
| PubChem CID | 6926 |
| Synonyms | Orthanilic acid, o-Aminobenzenesulfonic acid, o-Sulfanilic acid, Aniline-o-sulfonic acid, 2-Sulfanilic acid, Aniline-o-sulphonic acid, 1-Aminobenzene-2-sulfonic acid, o-Aminophenylsulfonic acid, Benzenesulfonic acid, o-amino-, ortho-sulfanilic acid, Aniline-2-sulfonic acid |
Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.
Safety and GHS hazards
Signal word Danger
- H314Causes severe skin burns and eye damage
- H319Causes serious eye irritation
Precautionary statements P260, P264, P264 + P265, P280, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P321, P337 + P317, 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
| 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 2-Aminobenzenesulfonic acid
Which CAS number identifies 2-Aminobenzenesulfonic acid?
2-Aminobenzenesulfonic acid is registered under CAS 88-21-1. You may also see it listed as Orthanilic acid, o-Aminobenzenesulfonic acid, o-Sulfanilic acid. Our catalogue number for this item is ZX-030509.
What are the formula and molar mass of 2-Aminobenzenesulfonic acid?
For 2-Aminobenzenesulfonic acid, its formula is C6H7NO3S and its molar mass is 173.19 g/mol. The systematic (IUPAC) name is 2-aminobenzenesulfonic acid. InChIKey ZMCHBSMFKQYNKA-UHFFFAOYSA-N lets you match it in any structure database.
How is 2-Aminobenzenesulfonic acid used in pharmaceutical QC?
2-Aminobenzenesulfonic acid is a characterised reference material linked to Mesalazine. 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 2-Aminobenzenesulfonic 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 2-Aminobenzenesulfonic 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 2-Aminobenzenesulfonic acid to my country?
Yes. Because 2-Aminobenzenesulfonic 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.
More Mesalazine standards
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