Molekula
Piroxicam
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
Piroxicam is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, inflammation, and fever. It functions as a cyclooxygenase inhibitor. Available as a white to yellowish crystalline powder, it has a molecular formula of C15H13N3O4S, a molecular weight of 331.35 g/mol, and should be stored at 2 to 8 °C. It is classified as a hazardous substance with a signal word of Danger.
Molekula supplies Piroxicam at 97.0%-103.0% purity (HPLC) in 1 g packs, from £55.80 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 6 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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1 g — £46.50 per pack ex VAT · £55.80 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.
Other grades of Piroxicam
| Grade | Purity | Price |
|---|---|---|
| Piroxicam - USP CRS | — | Price on request |
Specifications
| Property | Value |
|---|---|
| Appearance | Off white/ light yellow crystalline powder |
| Water | ≤0.5% |
| Heavy metals | ≤0.005% |
| Identification | Conforms to reference |
| Assay (HPLC) | 97.0%-103.0% |
| Residue on Ignition | ≤0.3% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 198 - 200 °C |
| pKa | pKa = 6.3 |
Source: PubChem CID 54676228 (Human Metabolome Database (HMDB), DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 23214960 |
| CAS Number | 36322-90-4 |
| IUPAC Name | 4-hydroxy-2-methyl-1,1-dioxo-N-pyridin-2-yl-1lambda6,2-benzothiazine-3-carboxamide |
| EC Number | 252-974-3 |
| Molecular Formula | C15H13N3O4S |
| Molecular Weight | 331.35 |
| Exact Mass | 331.0627 |
| SMILES | CN1C(=C(C2=CC=CC=C2S1(=O)=O)O)C(=O)NC3=CC=CC=N3 |
| InChIKey | QYSPLQLAKJAUJT-UHFFFAOYSA-N |
| InChI | InChI=1S/C15H13N3O4S/c1-18-13(15(20)17-12-8-4-5-9-16-12)14(19)10-6-2-3-7-11(10)23(18,21)22/h2-9,19H,1H3,(H,16,17,20) |
| PubChem CID | 54676228 |
| UN Number | UN2811 |
| REACH Code | Y110 |
| HTS Code | 29349990 |
| Tariff Code | 2934999090 |
Safety & GHS
-
Toxic
GHS06
-
Serious Health Hazard
GHS08
Hazard statements
- H301 Toxic if swallowed
- H361 Suspected of damaging fertility or the unborn child
- H372 Causes damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P263 Avoid contact during pregnancy/while nursing
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, 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
- 4-Hydroxy-2-methyl-N-(2-pyridyl)-2H-1,2-benzothiazin-3-caboxyamid-1,1-dioxid
- BAXO
- CHF 1251
- CP 16171
- Feldene
- Larapam
- Piroftal
- Piroxicamum
- Pyroxycam
- Roxicam
Frequently asked questions
What is Piroxicam used for?
Piroxicam is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, inflammation, and fever, commonly in conditions like arthritis and musculoskeletal disorders.
What is the chemical formula and molecular weight of Piroxicam?
The chemical formula of Piroxicam is C15H13N3O4S, and its molecular weight is 331.35 g/mol.
How should Piroxicam be stored?
Piroxicam should be stored at temperatures between 2 and 8 °C, protected from light and moisture.
What grade of Piroxicam does Molekula supply?
Molekula's Piroxicam is supplied to a specification of off-white to light yellow crystalline powder with an HPLC assay of 97.0% to 103.0%, water of no more than 0.5%, heavy metals of no more than 0.005%, residue on ignition of no more than 0.3%, and identification conforming to reference.
Can Molekula supply Piroxicam in bulk quantities?
Yes, Molekula can supply Piroxicam in bulk quantities—please contact our sales team for volume pricing and availability.
What documentation comes with a Piroxicam 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 Piroxicam?
Directly from Molekula, which lists Piroxicam in 1 g packs from £55.80 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.
Is Piroxicam dangerous goods for shipping?
Yes. Piroxicam ships as dangerous goods: UN2811, class 6.1, packing group III.
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.