103026-83-1

Basic information

• Product Name: Dehydro Nisoldipine
• Synonyms: 2,6-Dimethyl-4-(2-nitrophenyl)-3,5-pyridinedicarboxylic Acid 3-Methyl 5-(2-Methylpropyl) Ester;Dehydro Nisoldipine;2,6-Dimethyl-4-(2-nitrophenyl)pyridine-3,5-dicarboxylic acid 3-methyl 5-(2-methylpropyl) ester
• CAS NO: 103026-83-1
• Molecular Formula: C₂₀H₂₂N₂O₆
• Molecular Weight: 386.4
• Product Categories: Aromatics;Heterocycles;Intermediates & Fine Chemicals;Metabolites & Impurities;Pharmaceuticals;Aromatics, Heterocycles, Metabolites & Impurities, Pharmaceuticals, Intermediates & Fine Chemicals
• Mol File: 103026-83-1.mol
• Article Data: 11

Chemical Properties

• Melting Point: 78-80°C
• Appearance: /
• Storage Temp.: -20°C Freezer
• Solubility: Chloroform (Slightly), Methanol (Slightly)
• CAS DataBase Reference: Dehydro Nisoldipine(CAS DataBase Reference)
• NIST Chemistry Reference: Dehydro Nisoldipine(103026-83-1)
• EPA Substance Registry System: Dehydro Nisoldipine(103026-83-1)

Safety Data

• Hazardous Substances Data: 103026-83-1(Hazardous Substances Data)

Usage

Chemical Properties

Off-White Solid

Uses

A metabolite of Nisoldipine (N489125).

Upstream product

• 63675-72-9 nisoldipine 

Relevant articles and documents

UV derivative spectrophotometric study of the photochemical degradation of nisoldipine

The photodecomposition of nisoldipine ((±)3-isobutyl-5-methyl-1,4-dihydro-2,6-dimethyl-4-(2-nitrophenyl)-pyridine-3,5-dicarboxylate), whereby its 4-(2-nitrosophenyl) pyridine analogue is obtained as the photolytic product, was investigated under daylight exposure by means of UV derivative spectrophotometry. The optimal instrumental parameters (120 nm/min scan speed; 2 nm slit width; Δλ=10 nm and 5 s response time) for analogue derivative spectra were established for amplitudes 1D285 and 2D291 (measured to the baseline) of the nitroso analogue assay, as well as for 1D386 of the parent compound-nisoldipine assay. Using the first-order derivative spectrum, the minimum detectable amount of nitroso analogue in the presence of nisoldipine was equivalent to an impurity level of 5% and by the second-order derivative spectrum, the determination limit was equivalent to an impurity level of 2%. The degradation of nisoldipine followed within 30 days and the calculated maximal degradation rate was 1.6% per day for nisoldipine raw material, but significantly lower values of 0.19 and 0.15% per day were obtained for Nisoldin tablets (10 and 5 mg, respectively). Copyright (C) 2000 Elsevier Science S.A.

Reactivity of C4-indolyl substituted 1,4-dihydropyridines toward superoxide anion (O2O) in dimethylsulfoxide

Reactivity of two new C4-indolyl substituted 1,4-dihydropyridines (1,4-DHPs) toward superoxide anion (O2-) in dimethylsulfoxide (DMSO) is reported. Reactivity was followed by electrochemical and spectroscopic techniques. Gas chromatography-mass spectrometry (GC-MS) was used to identify the final products of the reaction. C4 indolyl-substituted-1,4-DHPs reacted toward O2O at significant rates, according to the calculated kinetic rate constants. Results are compared with 4-phenyl-DHP and the commercial 1,4-DHPs, nimodipine, nisoldipine, and amlodipine. Indolyl-substituted 1,4-DHPs were more reactive than the commercial derivatives. The direct participation of proton of the 1-position of the secondary amine in the quenching of O 2 was demonstrated.

Dihydropyridine compound dehydrogenation aromatization method and in use in the drug detection (by machine translation)

Relates to dihydropyridine compound dehydrogenation aromatization method and in use in the drug detection, compounds such as nifedipine, amlodipine, Cini horizontal, Lacidipine, felodipine, NIKA of amlodipine, nitrendipine, nimodipine and BANI to equal, the method in acidic aqueous solution in the presence of a nickel-containing catalyst in the oxidation reaction of the then purified to realize. The method can be used for preparing this kind of drug detection and quality monitoring of the impurity reference substance, also can be used for quality detection process is used in the instrument of the instrument such as the dissolution of the design reference, drug synthesis process and the design of the manufacturing process of the preparation of the reference, in order to avoid impurities introduced by the process channels, in addition can also be dihydropyridine compound of related synthetic process route provides design provides a reference. The reaction can be in the acidic aqueous solution, to a suitable oxidant (such as air) as the oxidizing agent, in the presence of nickel, at normal temperature to carry out dehydrogenation aromatization reaction, mild reaction conditions, the target compound of high conversion rate, the operation is simple, by-product little small pollution to the environment, is a completely environment-friendly preparation process. (by machine translation)

Mild, selective, and high-yield oxidation of hantzsch 1,4-dihydropyridines with lead(IV) acetate

Aromatization of 1,4-dihydropyridines with lead(IV) acetate under mild reaction conditions is described. The method is very selective, mild and versatile in the synthesis of different substituted pyridines.