5-Methyl-4-Isoxazolecarboxylic Acid for Leflunomide
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| 1 Kilogram |
Negotiable |
- Min.Order :1 Kilogram
- Purity: 99%min
- Payment Terms : L/C,D/A,D/P,T/T,Other
Keywords
5-Methylisoxazole-4-(4-trifluoromethyl)carboxanilide Leflunomide Supplier 5-Methyl-4-Isoxazolecarboxylic Acid
Quick Details
- Appearance:detailed see specifications
- Application:Leflunomide Intermediate:5-Methyl-4-Isoxazolecarboxylic Acid CAS:42831-50-5 An important raw material and intermediate used in Organic Synthesis, Pharmaceuticals
- PackAge:25/ drum or according to customer's requirements
- ProductionCapacity:500|Kilogram|Month
- Storage:Stored in a cool and dry well-closed container. Keep away from moisture and strong light/heat.
- Transportation:by air or sea
Superiority:
Leflunomide Intermediate:5-Methyl-4-Isoxazolecarboxylic Acid CAS:42831-50-5
HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufacture.
With about ten years of business experiences on the marketing & distribution, thinkchem specializes in exporting pharmaceuticals, veterinary drugs, feed additives, intermediates, fine chemicals, plants extracts, pesticides, food & nutrition additives.
Thinkchem is good at offering excellent outsourcing services to overseas customers as well as laboratory support.
Custom manufacture
Thinkchem is good at offering contract manufacture and custom synthesis under confidential agreement timely and effectively, and providing sales service from grams ,kilograms to multi-tons particularly for pharmaceuticals and their intermediates discovery and development. Thinkchem is equipped with modern lab apparatus including HPLC, GC. TLC AND NMR, motivated by a team of highly qualified personnel using these equipments.
Staff
Thinkchem is composed of chemical technicians, analytical chemists, organic chemists, and chemical engineers educated in leading universities in china. Our staff is supported by a group of consultants from academia with expertise in chemical synthesis and analytical chemistry.
Details:
Leflunomide Intermediate:5-Methyl-4-Isoxazolecarboxylic Acid CAS:42831-50-5
Items Specificationns Results
Appearance: A white to off-crystalline powder Conform
Identification: IR Spectrum similar to working standard Conform
Loss on drying: 0.5%max. 0.23%
Residue on ignition: 0.1%max. Conform
Heavy metals: 20ppm max. <20ppm
Chromatography:
Individual Impurities: 0.5%max. 0.21%
Total impurities: 1.0%max. 0.30%
Melting Point: 164~168C 166~168C
3-Methyl isomeric compound: 0.1%max. 0.05%
Assay:(HPLC): 98.5%min. 99.7%
Conclusion:It complies with the requirement of Enterprise’s standard.
1. Well-trained professional sales team dedicated to source, audit and export.
2. Well-trained R & D team equipped with new knowledge, new ideas and new insights to support product development and innovation.
3. Well-established partnership with major pharmaceutical and chemical companies in china.
4. Wide range of products and efficient regulatory documentation offered to customers.
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