Molekula
Sulfapyridine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sulfapyridine is a sulfonamide antibiotic used in veterinary medicine and research for its antimicrobial properties. It is available in powder form with a molecular weight of 249.29 g/mol, a molecular formula of C11H11N3O2S, and a CAS number of 144-83-2. Store at 2 to 8 °C. This product carries a warning signal word.
Molekula supplies Sulfapyridine at ≥98.0% purity in 25 g packs, from £42.96 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and safety data sheets are available in 7 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — £35.80 per pack ex VAT · £42.96 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | yellowish-brown to white crystal |
| Melting Point | 191-193 ºC |
| Water | ≤0.3% |
| Chloride (Cl-) | ≤100 ppm |
| Assay | ≥98.0% |
| Free Amine | ≤0.2% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 192 °C |
| pKa | pKa = 8.43 |
Source: PubChem CID 5336 (DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 14186261 |
| CAS Number | 144-83-2 |
| IUPAC Name | 4-amino-N-pyridin-2-ylbenzenesulfonamide |
| EC Number | 205-642-7 |
| Molecular Formula | C11H11N3O2S |
| Molecular Weight | 249.29 |
| Exact Mass | 249.0572 |
| SMILES | C1=CC=NC(=C1)NS(=O)(=O)C2=CC=C(C=C2)N |
| InChIKey | GECHUMIMRBOMGK-UHFFFAOYSA-N |
| InChI | InChI=1S/C11H11N3O2S/c12-9-4-6-10(7-5-9)17(15,16)14-11-3-1-2-8-13-11/h1-8H,12H2,(H,13,14) |
| PubChem CID | 5336 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2935904200 |
| Tariff Code | 2935909099 |
Safety & GHS
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Serious Health Hazard
GHS08
Hazard statements
- H361 Suspected of damaging fertility or the unborn child
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P262 Do not get in eyes, on skin, or on clothing
- P263 Avoid contact during pregnancy/while nursing
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 2-Sulfanilamidopyridine
- 2-Sulfapyridine
- Coccoclase
- Dagenan
- Piridazol
- Plurazol
- Streptosilpyridine
- Sulfidin
- Sulfidine
- Sulphapyridine
Frequently asked questions
What is sulfapyridine used for?
Sulfapyridine is an antibacterial agent used in the treatment of bacterial infections, particularly in veterinary medicine and historically in human medicine for conditions like urinary tract infections.
What is the chemical formula and molecular weight of sulfapyridine?
The chemical formula is C11H11N3O2S and the molecular weight is 249.29 g/mol.
How should sulfapyridine be stored?
Sulfapyridine should be stored at temperatures between 2 and 8 °C to maintain stability and prevent degradation.
What grade of sulfapyridine does Molekula supply?
Molekula supplies sulfapyridine with an assay of ≥98.0%, water ≤0.3%, chloride ≤100 ppm and free amine ≤0.2%, as a yellowish-brown to white crystal with a melting point of 191-193 °C.
Can Molekula supply sulfapyridine in bulk?
Yes, Molekula can supply sulfapyridine in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a sulfapyridine order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
Where can I buy Sulfapyridine?
Directly from Molekula, which lists Sulfapyridine in 25 g packs from £42.96 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.