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He to the non API physicochemical, he to the API common use, he to the non API manufacturers which good, he is the price that the API market, if you have not quite understand. WuHan DongKangYuanhere is he that the API is the most comprehensive information.
The colorful days from east to him that the API for you to do a simple introduction:
Product name: (he ground it)
Chinese alias: he reach it; (6 r - 12 ar) - 6 - (1, 3 - benzene and two evil MAO - 5 - base) - 2 - methyl - 2,3,6,7,12,12 a - 6 hydrogenated pyrazine and [1 ', 2 '- 1, 6] - [3, 4 - b] pyridine and indole - 1, 4-2
The CAS login number: 171596-29-5
English name: Cialis
Molecular formula: C22H19N3O4
Molecular weight: 389.40
Supply type: API > active pharmaceutical ingredients to fight infection
Specifications: 99% pharmaceutical grade
Packing: 25 kg cardboard barrels
Use: treatment of male erectile dysfunction. Need to sexual stimulation effect to make this product. Tadalafil cannot be used for women.
Pharmacological properties: principle and sildenafil, vardenafil, relied on the PDE - 5 to improve NO decomposition of the inhibition of cGMP vasodilation effect, make ED patients regain penile erectile ability, taking him up to that after not absorbed by the intestines and stomach.
Taboo: suffering from high blood pressure, heart disease, diabetes, anemia, renal insufficiency were banned. Use for a long time may cause on drug dependence, avoid and alkaline drug compatibility.
He to the non (Cialis), mainly used to treat male sexual dysfunction. But has not yet been approve the import in China, according to the counterfeit drugs becomes its product efficacy and safety are not guaranteed.
He that the generated methods: he reached the non (171596-29-5) preparation methods: D - methyl tryptophan and 3, 4 - methylene benzaldehyde soluble in methylene chloride, two oxygen radicals at 0 ℃ and trifluoroacetic acid, reaction at room temperature for 4 days. Join the methylene chloride, sodium chloride with carbonation solution, washing, drying, filtration. Residues filtrate vacuum concentration, column chromatography, 97:3 the methylene chloride - ethyl acetate elution, too (1 r, 3 r) - 1, 2, 3, 4-4 h - 1 - (3, 4 - phenyl) methylene two oxygen radicals - 9 h - [3 -, 4 - b] pyridine and indole - 3 - carboxylic acid methyl ester. The compound and sodium bicarbonate dissolved in chloroform, at 0 ℃ drop b chloride, chlorine mixing 1 h. To join the chloroform, add water and saturated sodium bicarbonate solution under stirring. To separate the organic layer, washed with water to neutral and dry. Filtration, the filtrate vacuum concentration, leftovers with ether recrystallization, the solid suspended in methanol, add 33% ethanol solution of methylamine, at room temperature under 50 ℃ and nitrogen protection reaction for 16 h. Residues decompression evaporate the solvent, soluble in methylene chloride, washing, drying, filtration. Residues filtrate concentrated to dry, column chromatography, reoccupy isopropyl alcohol recrystallization, product.
Physical and chemical properties: refractive index: 1.705
Appearance: gray crystalline solid
Flash: DHS 364.5 C
Boiling point: 679.1 DHS C at 760 mmHg
Melting point: 298-300 DHS C
Density: 1.51 g/cm3
That the API rest assured to him, there is no best, only better! WuHan DongKangYuantechnology co., LTD, in line with the good faith management, the principle of the supremacy of the service. Production and sales of the best quality he to the non API, it is the duty of our enterprise as an integral part of social obligations.
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