telithromycin

Telithromycin is a semisynthetic 14-membered macrolide antibiotic and erythromycin derivative that binds to the 50S subunit of the 70S bacterial ribosome, inhibits bacterial protein synthesis, and exhibits antimicrobial activity against a wide range of gram-positive and gram-negative bacteria for the treatment of mild to moderate respiratory infections.

5'-Guanylic acid disodium salt (GMP-5) is a purine ribonucleoside monophosphate. L-Glutamic acid and guanosine monophosphate are biosynthesized from xanthylic acid and L-glutamine via GMP synthase [glutamine-hydrolyzing]. Guanosine triphosphate and guanosine monophosphate are biosynthesized from diguanosine tetraphosphate via bis(5'-nucleosyl)-tetraphosphatase [asymmetrical]. In humans, guanosine monophosphate is involved in the kanamycin, telithromycin, tobramycin, and erythromycin action pathways, and several metabolic disorders including AICA-ribosiduria, adenosine deaminase deficiency, adenine phosphoribosyltransferase deficiency (aprt), and 2-hydroxyglutric aciduria (D and L form) pathways. Guanosine monophosphate is also found in foods like onion-family vegetables, millet, Chinese water chestnut, and red rice, serving as a potential biomarker for the consumption of these foods.

Nafithromycin (WCK 4873) serves as an orally administered antibiotic effective against community-acquired pneumonia organisms such as Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, and Methicillin-susceptible Staphylococcus aureus. It displays a minimum inhibitory concentration (MIC 90) of 0.12 mg liter against both macrolide-resistant and telithromycin-insensitive Streptococcus pneumoniae.

5'-Guanylic acid disodium salt (Standard) is the standard substance of 5'-Guanylic acid disodium salt, and it is applicable for quantitative analysis, quality control, and related research in biochemical experiments. 5'-Guanylic acid disodium salt (GMP-5) belongs to the class of organic compounds known as purine ribonucleoside monophosphates. In particular, L-Glutamic acid and guanosine monophosphate can be biosynthesized from xanthylic acid and L-glutamine; which is catalyzed by the enzyme GMP synthase [glutamine-hydrolyzing]. In addition, Guanosine triphosphate and guanosine monophosphate can be biosynthesized from diguanosine tetraphosphate; which is catalyzed by the enzyme bis(5'-nucleosyl)-tetraphosphatase [asymmetrical]. In humans, guanosine monophosphate is involved in the kanamycin action pathway, the telithromycin action pathway, the tobramycin action pathway, and the erythromycin action pathway. Guanosine monophosphate is also involved in several metabolic disorders, some of which include the AICA-ribosiduria pathway, adenosine deaminase deficiency, adenine phosphoribosyltransferase deficiency (aprt), and the 2-hydroxyglutric aciduria (D and L form) pathway. Outside of the human body, guanosine monophosphate can be found in a number of food items such as onion-family vegetables, millet, chinese water chestnut, and red rice. This makes guanosine monophosphate a potential biomarker for the consumption of these food products.