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Factory Outlets Flocculation In Water Treatment - 8-Bromo-7-but-2-ynyl-3-methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3 – JIN DUN
Use: Intermediate for Linagliptin. Use:Intermediate for Linagliptin Executive standard: enterprise standard Assay:98-102% Exterior:White to light yellow powder Package: 25kg/drum To analyze the existing linagliptin and its key intermediate 8-bromo-7-(2-butynyl)-3,7-dihydro-3-methyl-1-[(4-methyl -2-quinazolinyl)methyl)-1H-purine-2,6-dione (11) synthesis method, find a synthetic route suitable for industrial production. Method: summarize the different synthetic routes. Results and conclusio... -
Factory Price High Pressure Catalytic Hydrogenation - 4-[4-[(5S)-5-(Aminomethyl)-2-oxo-3-oxazolidinyl]phenyl]-3-morpholinone Hydrochloride – JIN DUN
12.The intermediate 4-(4-aminophenyl)-3-morpholinone (1) of the anticoagulant rivaroxaban was prepared by two methods: ①Bromobenzene was successively reacted with ethanolamine and chloroacetyl chloride to obtain 4-benzene The morpholinone is then nitrated to reduce to 1, and the total yield is about 32%; ②Bromobenzene is first nitrated, and then reacted with ethanolamine to obtain 2-(4-nitroanilino)ethanol, which is then closed by chloroacetyl chloride. The reduction reaction produces 1, and ... -
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Newly Arrival Reverse Osmosis Filter System - 8-Bromo-7-but-2-ynyl-3-methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3 – JIN DUN
Use: Intermediate for Linagliptin. Use:Intermediate for Linagliptin Executive standard: enterprise standard Assay:98-102% Exterior:White to light yellow powder Package: 25kg/drum To analyze the existing linagliptin and its key intermediate 8-bromo-7-(2-butynyl)-3,7-dihydro-3-methyl-1-[(4-methyl -2-quinazolinyl)methyl)-1H-purine-2,6-dione (11) synthesis method, find a synthetic route suitable for industrial production. Method: summarize the different synthetic routes. Results and conclusio... -
Big discounting Wastewater Purification - 4-Methoxybenzylalkohol;ANISALKOHOL;4-methoxy-benzenemethano; – JIN DUN
Intermediate for Moxonidine Can excite central α2 receptors and cause antihypertensive effects, similar to clonidine. The oral absorption rate (90%) and bioavailability (88%) are both high, and there is no first-pass effect. The peak blood concentration appears 1 to 3 hours after taking the drug. Most of it is excreted by the kidneys. t1/2 is about 2 hours. Clinically used for hypertension. Colorless or slightly yellow liquid. The melting point is 23-25.5°C, the boiling point is 159°C, the re... -
High Quality for Aqueous Processing - p-Tolylcarboxylic acid;4-Toluic acid ,99%;4-Carboxytoluene, p-Toluic acid; – JIN DUN
Description white or light yellow crystalline powder. Easily soluble in methanol and ether, hardly soluble in hot water, and can be volatilized with water vapor; phthalic acid is obtained by oxidation, which can be used as intermediates of medicine, photosensitive materials, pesticides, and organic pigments. Mainly used in the manufacture of hemostatic aromatic acid, p-formonitrile, p-toluoyl chloride, photosensitive materials, etc. It is used in organic synthesis intermediates and pesticide ... -
Professional China Urethane Acrylates - Hydroxypropyl methacrylate CAS NO.27813-02-1 – JIN DUN
HPMA is mainly applied in the production of thermosetting resin, hydroxyacrylic resin, cementing compound, fibre treating agent and synthetic resin copolymer modifier. 200KG/DRUM, 1000KG/IBC, ISO-tank or requirements of customer ITEM FIRST GRADE QUALIFIED APPEARANCE Colorless transparent liquid ESTER CONTENT, ≥ % 98.0 98.0 PURITY, ≥ % 97.0 94.0 COLOR, ≤ (Pt-Co) ... -
Factory making Superior Water Treatment - 4-[4-[(5S)-5-(Aminomethyl)-2-oxo-3-oxazolidinyl]phenyl]-3-morpholinone Hydrochloride – JIN DUN
12.The intermediate 4-(4-aminophenyl)-3-morpholinone (1) of the anticoagulant rivaroxaban was prepared by two methods: ①Bromobenzene was successively reacted with ethanolamine and chloroacetyl chloride to obtain 4-benzene The morpholinone is then nitrated to reduce to 1, and the total yield is about 32%; ②Bromobenzene is first nitrated, and then reacted with ethanolamine to obtain 2-(4-nitroanilino)ethanol, which is then closed by chloroacetyl chloride. The reduction reaction produces 1, and ... -
Manufacturer for Glutaric Anhydride - 4-chloro-n-(4,5-dihydro-1h-imidazol-2-yl)-6-methoxy-2-methyl-5-pyrimidinamin; – JIN DUN
It works by stimulating central presynaptic alpha 2- receptors. Its hypotensive effect is similar to that of nifedipine, a calcium antagonist, and captopril, an ACE inhibitor. For essential hypertension. This product should adopt the principle of individualized medication. Generally start from the lowest dose, that is, 0.2mg, once a day, taken in the morning. Dosage adjustments should be made at three-week intervals until satisfactory results are obtained. The usual dose is 0.2mg once, twice ... -
China Cheap price Mining Wastewater Treatment - 8-Bromo-7-but-2-ynyl-3-methyl-1-(4-methyl-quinazolin-2-ylmethyl)-3 – JIN DUN
Use: Intermediate for Linagliptin. Use:Intermediate for Linagliptin Executive standard: enterprise standard Assay:98-102% Exterior:White to light yellow powder Package: 25kg/drum To analyze the existing linagliptin and its key intermediate 8-bromo-7-(2-butynyl)-3,7-dihydro-3-methyl-1-[(4-methyl -2-quinazolinyl)methyl)-1H-purine-2,6-dione (11) synthesis method, find a synthetic route suitable for industrial production. Method: summarize the different synthetic routes. Results and conclusio... -
Super Purchasing for Diy Crystal Glue Jewelry - p-Tolylcarboxylic acid;4-Toluic acid ,99%;4-Carboxytoluene, p-Toluic acid; – JIN DUN
Description white or light yellow crystalline powder. Easily soluble in methanol and ether, hardly soluble in hot water, and can be volatilized with water vapor; phthalic acid is obtained by oxidation, which can be used as intermediates of medicine, photosensitive materials, pesticides, and organic pigments. Mainly used in the manufacture of hemostatic aromatic acid, p-formonitrile, p-toluoyl chloride, photosensitive materials, etc. It is used in organic synthesis intermediates and pesticide ... -
Fast delivery Aliphatic Urethane Acrylate - Hydroxypropyl acrylate CAS NO.25584-83-2 – JIN DUN
HPA is mainly applied in the production of thermosetting resin, hydroxyacrylic resin, cementing compound, fibre treating agent and synthetic resin copolymer modifier. 200KG/DRUM, 1000KG/IBC, ISO-tank or requirements of customer ITEM FIRST GRADE QUALIFIED APPEARANCE Colorless transparent liquid ESTER CONTENT, ≥ % 98.0 98.0 PURITY, ≥ % 96.0 94.0 COLOR, ≤ (Pt-Co) 20 30 FREE ACID(AS AA), ≤ % 0.2 0.3 WATER, ≤ m/m% 0.2 0.3 INHIBITOR(MEHQ, ppm) 250±50...