| Customization: | Available |
|---|---|
| Type: | Piperidine |
| Appearance: | Liquid |
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Chongqing Yuhan Technology Co., Ltd. is a leading Chinese supplier and trader of high-quality pharmaceutical and chemical raw materials, specializing in piperidine and pyridine derivatives. With our own factory and advanced R&D laboratory, we ensure strict quality control and customized solutions to meet global industry standards.
Specialization in Piperidine & Pyridine Compounds - We focus on manufacturing and supplying key intermediates for pharmaceuticals, agrochemicals, and specialty chemicals.
End-to-End Production & Supply - From synthesis to export, we provide a seamless supply chain with competitive pricing.
Strict Quality Compliance - Our products meet GMP, ISO, and international regulatory standards for safety and purity.
Pyridine & Derivatives: Pyridine Hydrochloride, 2-Methylpyridine, 3-Methylpyridine
Chloropyridines: 2-Chloropyridine, Nicosulfuron (herbicide), Chlorpyrifos (insecticide)
Functional Pyridines: 2-Vinylpyridine, 2-Cyanopyridine, 3-Cyanopyridine
Aminopyridines: 2-Aminopyridine, 4-Aminopyridine
Other Derivatives: 2-Methyl-5-ethylpyridine (MEP), Hydroxypyridine
With a strong presence in Asia, Europe, and North America, we serve pharmaceutical giants, agrochemical manufacturers, and research institutions worldwide. Our commitment to innovation, reliability, and customer satisfaction makes us a trusted partner in the fine chemical industry.
| Product Name (EN/CN) | CAS No. | Molecular Formula | Purity (%) | Appearance | Melting Point (°C) | Boiling Point (°C) | Density (g/cm³) | Application Fields |
|---|---|---|---|---|---|---|---|---|
| Pyridine Hydrochloride | 628-13-7 | C5H5N·HCl | ≥99.0 | White crystals | 144-146 | - | - | Pharmaceutical intermediates |
| 2-Methylpyridine (α-Picoline) | 109-06-8 | C6H7N | ≥99.5 | Colorless liquid | -29 | 129-130 | 0.944 (20°C) | Solvent, rubber chemicals |
| 3-Methylpyridine (β-Picoline) | 108-99-6 | C6H7N | ≥99.0 | Colorless liquid | -18 | 144-145 | 0.957 (20°C) | Vitamin B3 production |
| 2-Chloropyridine | 109-09-1 | C5H4ClN | ≥98.0 | Colorless liquid | -46 | 166-167 | 1.205 (20°C) | Pesticide intermediates |
| Nicosulfuron | 111991-09-4 | C15H18N6O6S | ≥95.0 | White powder | 169-172 | - | - | Herbicide |
| Chlorpyrifos | 2921-88-2 | C9H11Cl3NO3PS | ≥97.0 | White crystals | 42-44 | 200 (dec.) | - | Insecticide |
| 2-Vinylpyridine | 100-69-6 | C7H7N | ≥99.0 | Colorless liquid | -50 | 159-160 | 0.974 (20°C) | Polymer modification |
| 2-Cyanopyridine | 100-70-9 | C6H4N2 | ≥98.0 | White crystals | 26-28 | 212-213 | - | Pharmaceutical intermediates |
| 3-Cyanopyridine | 100-54-9 | C6H4N2 | ≥99.0 | White crystals | 50-52 | 215-217 | - | Nicotinamide production |
| 2-Aminopyridine | 504-29-0 | C5H6N2 | ≥99.0 | White crystals | 57-59 | 210-211 | - | Pharmaceutical synthesis |
| 4-Aminopyridine | 504-24-5 | C5H6N2 | ≥98.0 | White crystals | 158-160 | - | - | Drug intermediate |
| 2-Methyl-5-ethylpyridine (MEP) | 104-90-5 | C8H11N | ≥98.0 | Colorless liquid | -70 | 178-180 | 0.921 (20°C) | Vitamin B6 synthesis |
| Hydroxypyridine | 142-08-5 | C5H5NO | ≥97.0 | White crystals | 105-107 | - | - | Chemical intermediate |
Key Difference: Salt form of pyridine, more stable and water-soluble than pure pyridine.
Applications & Usage:
Pharmaceuticals: Used as an intermediate in drug synthesis (e.g., antihistamines, antibiotics). Typically added in stoichiometric amounts (1:1 to 1:2 molar ratio) in reactions.
Chemical Synthesis: Acts as a catalyst or buffering agent in organic reactions (0.5-5% by weight).
DNA Extraction: Used in molecular biology for nucleic acid precipitation.
Key Difference: Methyl group at the 2-position, more reactive than 3-methylpyridine.
Applications & Usage:
Rubber Industry: Vulcanization accelerator (0.1-1% in rubber compounds).
Solvent: For resins, dyes, and pharmaceuticals (as a replacement for pyridine).
Agrochemicals: Intermediate for herbicides and insecticides.
Key Difference: Methyl group at the 3-position, less reactive but more stable.
Applications & Usage:
Vitamin B3 (Niacin) Production: Key precursor (converted via oxidation).
Pharmaceuticals: Used in synthesizing anti-tuberculosis drugs.
Flavor & Fragrance: Adds a smoky note in food additives.
Key Difference: Chlorine at the 2-position makes it a versatile electrophile.
Applications & Usage:
Pharmaceutical Intermediates: For antihypertensive drugs (e.g., nicorandil).
Pesticides: Building block for sulfonylurea herbicides (e.g., nicosulfuron).
Key Difference: Sulfonylurea herbicide, highly selective for corn.
Applications & Usage:
Agriculture: Post-emergence herbicide (20-40 g/ha dosage). Controls weeds in maize fields.
Key Difference: Organophosphate insecticide (now banned in many countries).
Applications & Usage:
Crop Protection: Used against soil insects (0.5-2 kg/ha).
Termite Control: Applied as a soil treatment (restricted use).
Key Difference: Reactive vinyl group for polymerization.
Applications & Usage:
Polymer Modification: Added to latex adhesives (1-5% by weight) for improved bonding.
Pharmaceuticals: Intermediate for drug delivery systems.
Key Difference: Nitrile group at the 2-position, less common than 3-cyanopyridine.
Applications & Usage:
Pharmaceuticals: Intermediate for anticonvulsant drugs.
Key Difference: Primary precursor for niacin (vitamin B3).
Applications & Usage:
Vitamin Synthesis: Hydrolyzed to nicotinamide (100% conversion in industrial processes).
Electroplating: Brightener in metal coatings (0.01-0.1% in baths).
Key Difference: Amino group at the 2-position, used in small-molecule drugs.
Applications & Usage:
Pharmaceuticals: Building block for antihistamines and antiviral drugs.
Key Difference: Potassium channel blocker, medically significant.
Applications & Usage:
Medicine: Treatment for multiple sclerosis (10-20 mg/day dosage).
Research: Neurobiology studies.
Key Difference: Dialkylpyridine with unique steric properties.
Applications & Usage:
Vitamin B6 Synthesis: Key intermediate (converted via oxidation/amination).
Key Difference: Hydroxy group adds chelating properties.
Applications & Usage:
Metal Chelation: Binds to heavy metals in wastewater treatment (1-5 ppm).
Pharmaceuticals: Intermediate for antibacterial agents.
| Category | Reactivity | Primary Use | Dosage/Concentration |
|---|---|---|---|
| Pyridine Salts | Low | Pharma intermediates | 1-5% in reactions |
| Methylpyridines | Moderate (2-) > (3-) | Vitamins, agrochemicals | 0.1-10% |
| Chloropyridines | High | Pesticides | 20 g/ha (herbicides) |
| Vinylpyridines | Very high | Polymer modification | 1-5% in adhesives |
| Cyanopyridines | Moderate | Vitamin B3 production | Industrial-scale hydrolysis |
| Aminopyridines | High (4-) > (2-) | Drugs, neurobiology | mg to g doses |
| Specialty Pyridines | Variable | Chelation, vitamins | ppm to % levels |
Q1: Can I get some samples?
A: Yes, sure. Usually, we can provide free samples for less than 5 kg, but the customer needs to pay for the shipping.
Q2: What is your MOQ?
A: The minimum order quantity varies for different products, with most requiring a minimum of 1 ton. However, we can accommodate smaller quantities, such as 100kg, with a 100% sample charge.
Q3: How to confirm product quality before placing an order?
A: You can obtain free samples of the products, but you need to cover the shipping fee or arrange for the samples to be sent to us by express. Additionally, you can provide us with your product specifications and requirements, and we will manufacture the products accordingly.
Q4: Is there a discount for bulk purchases? How much is the discount?
A: Yes, we offer discounts for bulk purchases. The discount is determined by evaluating factors such as purchase volume, product type, and cooperation period. Generally, the larger the purchase volume, the greater the discount.
Q5: How do I start paying?
A: Payment can be made by wire transfer, Western Union, PayPal, Visa, Mastercard, T/T, Apple Pay, Google Pay, etc.
Q6: What is the shipping time?
A: We ship the products out within 1-3 days and provide a tracking number. Shipping time varies by country.
Q7: What qualifications and certifications does the company have? Such as ISO certification, etc.
A: Our supply manufacturers hold several authoritative certifications to ensure our products and services meet international standards and industry regulations. This includes the ISO 9001 Quality Management System certification, which indicates we have reached internationally recognized levels in product quality control, production process management, and continuous improvement, providing stable and reliable quality assurance for customers.
Q8: How about the after-sale service of products?
A: After purchasing products from our company, you will be supported by our professional technical team and after-sales team, who will help solve any problems you may encounter.
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