Procaterol, applied as procaterol hydrochloride (USAN), is an intermediate-acting Î²2-adrenergic receptor agonist used for the treatment of asthma.It has never been filed for FDA evaluation in the United States, where it is not marketed.The drug is readily oxidised in the presence of moisture and air, making it unsuitable for therapeutic use by inhalation.Pharmaceutical company Parke-Davis / Warner-Lambert researched a stabilizer to prevent oxidation, but an effective one was never developed.he drug is readily oxidised in the presence of moisture and air, making it unsuitable for therapeutic use by inhalation. Pharmaceutical company Parke-Davis / Warner-Lambert researched a stabilizer to prevent oxidation, but an effective one was never developed.
Lassaigneâs test is used to detect the presence of elements: Nitrogen (N), Sulfur (S), Chlorine (Cl), Bromine (Br) and Iodine (I). This test involves following two steps. i) preparation of sodium fusion extract (SFE). ii) Detection of elements using SFE.
The characteristic color of a positive biuret test. The biuret test is a chemical test used for detecting the presence of peptide bonds. In the presence of peptides, a copper (II) ion forms violet-colored coordination complexes in an alkaline solution.Several variants on the test have been developed, such as the BCA test and the Modified Lowry test.he biuret reaction can be used to assess the concentration of proteins because peptide bonds occur with the same frequency per amino acid in the peptide. The intensity of the color, and hence the absorption at 540 nm, is directly proportional to the protein concentration, according to the Beer-Lambert law.