Ketotifen fumarate
Synonym(s):Ketotifen fumarate salt
- CAS NO.:34580-14-8
- Empirical Formula: C23H23NO5S
- Molecular Weight: 425.5
- MDL number: MFCD00079394
- EINECS: 252-100-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-19 20:33:22
What is Ketotifen fumarate ?
Description
Ketotifen is a histamine H1 receptor antagonist (Ki = 1.3 nM) and mast cell stabilizer. It is selective for H1 receptors over H2 and H3 receptors (Kis = 987 and 2,500 nM, respectively). Ketotifen (50 and 100 μM) inhibits degranulation of rat peritoneal mast cells induced by compound 48/80 . It inhibits the passive cutaneous anaphylaxis (PCA) reaction in rats by 54.6% when administered orally at a dose of 20 mg/kg. Ketotifen (30 mg/kg) inhibits the quick phase airway response in a rat ovalbumin-induced immediate airway response model. Formulations containing ketotifen have been used in the treatment of itching associated with allergic conjunctivitis.
Chemical properties
Off-White Solid
The Uses of Ketotifen fumarate
Ketotifen fumarate salt has been used: for mast cell product antagonism, as a positive control in β-hexosaminidase release assay, as mast cell stabilizer to treat pregnant dams added to ad libitum drinking water
The Uses of Ketotifen fumarate
Antiasthmatic; antiallergic.
The Uses of Ketotifen fumarate
vasodilator
The Uses of Ketotifen fumarate
Ketotifen, C19H19NOS, is also a piperidine derivative; like oxatomide, it has mast cell stabilizing actions besides its antihistamine properties.
brand name
Zaditor (Novartis).
General Description
Ketotifen fumarate, 4-(1-methyl-4-piperidylidene)-4Hbenzo[4,5]cyclohepta[1,2-b]thiophen-10(9H)-one hydrogenfumarate (Zaditor), is a fine crystalline powder.Ketotifen is a ketothiophene isostere analog of the dibenzocycloheptaneantihistamines. The solution contains0.345 mg of ketotifen fumarate, which is equivalent to0.25 mg of ketotifen. The solution also contains the preservativebenzalkonium chloride (0.01%) as well as glycerol,sodium hydroxide and/or hydrochloric acid (to adjust pH),and purified water. It has a pH of 4.4 to 5.8 and an osmolalityof 210 to 300 mOsm/kg.
The recommended dose of ketotifen solution is 1 drop instilledinto each affected eye every 8 to 12 hours. The mostfrequently reported adverse reactions are conjunctival infection,headaches, and rhinitis. This drug product is for ocularadministration only and not for injection or oral use.Ketotifen solution should be used with caution during pregnancyor while nursing, because its safety has not been studiedunder these circumstances.
Biological Activity
An H 1 receptor antagonist.
storage
Store at RT
Properties of Ketotifen fumarate
Melting point: | 192 C |
storage temp. | 2-8°C |
solubility | Sparingly soluble in water, slightly soluble in methanol, very slightly soluble in acetonitrile. |
form | neat |
form | Solid |
color | White to Pale Beige |
PH | pH (10g/l, 25℃) : 3.0~4.0 |
Water Solubility | Soluble in water (10 mg/ml), DMSO (100 mM), and methanol. |
λmax | 297nm(MeOH)(lit.) |
Merck | 14,5307 |
CAS DataBase Reference | 34580-14-8(CAS DataBase Reference) |
Safety information for Ketotifen fumarate
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H302:Acute toxicity,oral H319:Serious eye damage/eye irritation |
Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. |
Computed Descriptors for Ketotifen fumarate
InChIKey | YNQQEYBLVYAWNX-WLHGVMLRSA-N |
Abamectin manufacturer
Fleming Laboratories Ltd
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