成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

ChemicalBook > Product Catalog >Analytical Chemistry >Standard >Pharmaceutical Impurity Reference Standards >1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester Suppliers list
Company Name: Standardpharm Co. Ltd.
Tel: 86-714-3992388
Email: overseasales1@yongstandards.com
Products Intro: Product Name:Nimodipine Impurity 2
CAS:21881-78-7
Purity:0.99 Package:10mg;25mg;50mg;100mg
Company Name: Career Henan Chemica Co
Tel: +86-0371-86658258 +8613203830695
Email: laboratory@coreychem.com
Products Intro: Product Name:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester
CAS:21881-78-7
Purity:0.99summer Package:5KG;1KG Remarks:Summer 618
Company Name: CR Corporation Limited
Tel: +8613062833949
Email: fred.wen@crcorporation.cn
Products Intro: Product Name:NimodipineEPImpurityB
CAS:21881-78-7
Company Name: sgtlifesciences pvt ltd
Tel: +8617013299288
Email: dj@sgtlifesciences.com
Products Intro: Product Name:Nimodipine EP Impurity B
CAS:21881-78-7
Company Name: China National Standard Pharmaceutical Corporation Limited
Tel: +8615391658522
Email: overseasales@yongstandards.com
Products Intro: Product Name:Nitrendipine Impurity 8
CAS:21881-78-7
Purity:0.95 Package:Vials

1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester manufacturers
1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester Basic information
Product Name:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester
Synonyms:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester;Nimodipine EP Impurity B;(RS)-Di-iso-propyl-1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)pyridine-3,5-dicarboxylate;Bis(1-methylethyl) 2,6-Dimethyl-4-(;Nimodipine Impurity B Control;3,5-diisopropyl 1,4-dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylate;Nimodipine EP Imp B;Nimodipine Impurity 2
CAS:21881-78-7
MF:C21H26N2O6
MW:402.44
EINECS:
Product Categories:
Mol File:21881-78-7.mol
1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester Structure
1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester Chemical Properties
Melting point 123-125℃ (ethanol )
Boiling point 512.1±50.0 °C(Predicted)
density 1.186±0.06 g/cm3(Predicted)
storage temp. Hygroscopic, -20°C Freezer, Under inert atmosphere
solubility Chloroform (Slightly), Methanol (Slightly)
form Solid
pka2.94±0.70(Predicted)
color Pale Beige
Stability:Hygroscopic
Safety Information
MSDS Information
1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester Usage And Synthesis
Uses3-Des(2-methoxyethyl) 3-(1-Methylethyl) Ester Nimodipine (Nimodipine EP Impurity B) can be used in synthetic preparation of dihydropyridinedicarboxylic acid esters by methylimidazolium trifluoroacetate-catalyzed Hantzsch cyclocondensation reaction of oxo-carboxylic acid esters with aldehydes and ammonium acetate. It can also be used as an analyte for analytical study in developing and optimizing a validated isocratic reversed-phase high-performance liquid chromatograhy separation of nimodipine and impurities in tablets using experimental. design methodology. It is an impurity of the drug Nimodipine (N478200).
1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester Preparation Products And Raw materials
Tag:1,4-Dihydro-2,6-dimethyl-4-(3-nitrophenyl)-3,5-pyridinedicarboxylic acid bis(1-methylethyl) ester(21881-78-7) Related Product Information
Nimodipine Impurity 16 (Z)-3-aminobut-2-enamide 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid Nimodipine Impurity 15 Nimodipine Impurity 6 1-Boc-hexahydro-1,4-diazepine Nimodipine Nimodipine Impurity 4 NIMODIPINE RELATED COMPOUND A (50 MG) (2-METHOXYETHYL 1-METHYLETHYL 2,6-DIMETHYL-4-(3-NITROPHENYL)PYRIDINE-3,5-DICARBOXYLATE) NIMODIPINE RELATED COMPOUND B (50 MG) (BIS(2-METHOXYETHYL) 2,6-DIMETHYL-4-(3-NITROPHE-NYL)-1,4-DIHYDROPYRIDINE-3,5-DICARBOXYLATE) (AS) Nimodipine Impurity 5