Molekula
Ketotifen fumarate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ketotifen fumarate is a potent antihistamine and mast cell stabilizer used in the treatment of allergic conditions such as asthma and allergic rhinitis. It is available in research and bulk quantities. CAS: 34580-14-8, Molecular Formula: C23H23NO5S, Molecular Weight: 425.50, Storage: Ambient, Signal Word: Warning. Molekula supplies Ketotifen fumarate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
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.
-
1 g — £51.40 per pack ex VAT · £61.68 inc. VAT
-
5 g — £108.90 per pack ex VAT · £130.68 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 | White crystal powder |
| Impurity A | ≤ 0.2% |
| Impurity B | ≤ 0.2% |
| Acetone | ≤ 5000ppm |
| Loss on Drying | ≤ 0.5% |
| Solubility | Sparingly soluble in water, slightly soluble in Methanol, very soluble in Acetonitrile |
| Assay | ≥ 98.5% |
| Sulphated Ash | ≤ 0.1% |
| Methanol | ≤ 500ppm |
| Total Impurities | ≤ 0.5% |
| Single Unknown Impurity | ≤ 0.1% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
Identification
| Property | Value |
|---|---|
| SKU | 51433384 |
| CAS Number | 34580-14-8 |
| IUPAC Name | (E)-but-2-enedioic acid;2-(1-methylpiperidin-4-ylidene)-6-thiatricyclo[8.4.0.03,7]tetradeca-1(14),3(7),4,10,12-pentaen-8-one |
| EC Number | 252-100-0 |
| Molecular Formula | C23H23NO5S |
| Molecular Weight | 425.50 |
| Exact Mass | 425.1297 |
| SMILES | CN1CCC(=C2C3=C(C(=O)CC4=CC=CC=C42)SC=C3)CC1.C(=C/C(=O)O)\C(=O)O |
| InChIKey | YNQQEYBLVYAWNX-WLHGVMLRSA-N |
| InChI | InChI=1S/C19H19NOS.C4H4O4/c1-20-9-6-13(7-10-20)18-15-5-3-2-4-14(15)12-17(21)19-16(18)8-11-22-19;5-3(6)1-2-4(7)8/h2-5,8,11H,6-7,9-10,12H2,1H3;1-2H,(H,5,6)(H,7,8)/b;2-1+ |
| PubChem CID | 5282408 |
| REACH Code | Y110 |
| HTS Code | 2934.99.90.01 |
| Tariff Code | 2934999090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
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.
Synonyms
- Alaway
- Eye Itch
- Eye Itch Releif
- Eye Itch Relief
- HC 20,511 fumarate
- Itchy Eye
- Ketotifen (as fumarate)
- Ketotifen hydrogen fumarate
- Zaditen
- Zaditor
Frequently asked questions
What is Ketotifen fumarate used for?
Ketotifen fumarate is primarily used in the treatment of allergic conditions such as asthma and allergic rhinitis due to its antihistaminic and mast cell stabilizing properties.
What is the chemical formula and molecular weight of Ketotifen fumarate?
The chemical formula is C23H23NO5S and the molecular weight is 425.50 g/mol.
How should Ketotifen fumarate be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade of Ketotifen fumarate is available?
Available in research grade; specific purity details are provided upon request.
Can Molekula supply Ketotifen fumarate in bulk?
Yes, Molekula can supply Ketotifen fumarate in bulk quantities—please contact us for pricing and availability.
What documentation comes with a purchase of Ketotifen fumarate?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS); additional documentation can be provided upon request.
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.