Ephedrine hydrochloride

With potassium ferricyanide and sodium hydroxide solution ephedrine forms benzaldehyde. A solution of the hydrochloride gives with copper sulphate and sodium hydroxide solutions, a purple coloration extractable by ether, leaving the aqueous layer blue. A solution of ephedrine base in chloroform on standing is partially converted into ephedrine hydrochloride. ... 

Likewise, record the second derivative spectra of the four standard pseudo-ephedrine hydrochloride solutions and record the peak heights DL at 258-259 nm plot the results against concentration and confirm that a straight line is obtained. 

Pseudoephedrine hydrochloride is prepared by a Welsh rearrangement10 of -ephedrine hydrochloride with acetic anhydride followed by deacetylation with hydrochloric acid.11 -Ephedrine can be resolved from d -ephedrine with -mandelic acid.12 -Ephedrine occurs naturally in certain plants of the Ma Huang species. 

What is the pH of a solution containing 0.1 mole of ephedrine and 0.001 mole of ephedrine hydrochloride per liter of solution ... 

Millar K, Wilkinson RT. (1981). The effects upon vigilance and reaction speed of the addition of ephedrine hydrochloride to chlorpheniramine maleate. Eur J Clin Pharmacol. 20(5) 351-57. 

Miller, J. H. McB., and Rose, U. (2001). Comparison of chiral liquid chromatographic methods and capillary electrophoresis, separation of the enantiomers of ephedrine hydrochloride. Pharmeuropa 13(1), 3-7. 

Ephedrine hydrochloride (C10H15ON HC1), when dried over sulfuric acid for 24 h, contains not less than 80% and not more than 82.5% of anhydrous ephedrine, C10H15ON. 

H. W. Schultz and C. Paveenbampen, Quantitative GLC analysis of theophylline, ephedrine hydrochloride and phenobarbital suspension, J. Pharm. Sci., 62 1995 (1973). 

G. V. Failonde and S. N. Joshi, Analysis of a drug preparation containing nosapine, ephedrine hydrochloride and chlorpheniramine maleate by thin layer chromatography, Indian Drugs, 23 515 (1986). 

Imidazolidinones. The reaction of urea with (- )-ephedrine hydrochloride provides a chiral imidazolidinone (l),1 which can be used as a chiral auxiliary for... 

As an example, the drug ephedrine is widely used in cold and allergy medications. Ephedrine melts at 79 °C, has an unpleasant fishy odor, and is oxidized by air to undesirable products. Ephedrine hydrochloride melts at 217 °C, does not oxidize easily, and has virtually no odor. Obviously, the hydrochloride salt is preferable for compounding medications. 

Infra-red Spectrum. Principal peaks at wavenumbers 994, 699, 754, 1049, 1242, 670 (ephedrine hydrochloride, KBr disk). 

Diethylcarbamazine Phenothiazine Octamylamine Amantadine Sulphate T etrahydrozoline Methylchlorophenoxyacetic Acid Carbaryl Thiabendazole Edrophonium Chloride Ephedrine Hydrochloride Methoxyamphetamine Hydrochloride... 

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