| CAS: | 14976-57-9 |
| MF: | C25H30ClNO5 |
| MW: | 459.96 |
| EINECS: | 239-055-2 |
| Product Categories: | antianaphylaxis;TAVIST;Histaminergics;Antagonists;Neurotransmitters;Aromatics;Chiral Reagents;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals |
| Mol File: | 14976-57-9.mol |
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| Clemastine fumarate Chemical Properties |
| Melting point | 158-162°C |
| alpha | D21 +16.9° (methanol) |
| Boiling point | 154°C (rough estimate) |
| density | 1.0247 (rough estimate) |
| refractive index | 1.5790 (estimate) |
| storage temp. | 2-8°C |
| solubility | DMSO: soluble5mg/mL (clear solution; warmed) |
| form | powder |
| color | white to beige |
| optical activity | [α]/D +15 to +25°, c = 1 in methanol |
| InChIKey | PMGQWSIVQFOFOQ-YKVZVUFRSA-N |
| CAS DataBase Reference | 14976-57-9(CAS DataBase Reference) |
| Clemastine fumarate Usage And Synthesis |
| Chemical Properties | White Solid |
| Originator | Tavegyl,Sandoz,France,1967 |
| Uses | H1 Histamine receptor antagonist. Antihistaminic. |
| Uses | anti-inflammatory |
| Uses | Clemastine fumarate is a selective histamine H1 receptor antagonist (Ki = 0.26 nM) that also displays high affinity for muscarinic receptors (Ki = 16 nM). It has also recently been identified as a positive allosteric modulator of P2X7 receptor signaling. Clemastine fumarate has long been used to inhibit histamine-induced bronchoconstriction in asthma and airway hyperresponsive studies. |
| Definition | ChEBI: The fumaric acid salt of clemastine. An antihistamine with antimuscarinic and moderate sedative properties, it is used for the symptomatic relief of allergic conditions such as rhinitis, urticaria, conjunctivitis and in pruritic (severe itching) skin condi ions. |
| Manufacturing Process | 9.9 g of α-methyl-p-chlorobenzhydrol are added to a suspension of 2.3 g of powdered sodamide in 30 cc of benzene. Subsequently 7.4 g of Nmethylpyrrolidyl-(2)-ethyl chloride are added and the solution is heated to the boil at reflux for 20 hours. Then shaking is first effected with water and then 4 times each time with 25 cc of 2 N hydrochloric acid. The acid extracts are made alkaline with potassium hydroxide solution while cooling strongly, and the precipitated oil is extracted with ether. After drying of the ethereal solution over potassium carbonate, the solvent is evaporated and the residue is fractionally distilled in a high vacuum, whereby N-methyl-2-[2'-(α-methyl-pchlorobenzhydryloxy)-ethyl]-pyrrolidine boils over at 154°C/0.02 mm Hg. The base is converted to the fumarate by reaction with fumaric acid. |
| Brand name | Tavist (Novartis). |
Product picture
Packing &shipping&Payment
Packing:25kg/drum
Shipping:by sea or by air
Payment:T/T,western union,moneygram
Packaging Details drum
Port:Tianjin
Lead Time :
| Quantity(Kilograms) | 1 - 10000 | >10000 |
| Est. Time(days) | 5 | To be negotiated |
Company information
Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.
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