Étalons pharmaceutiques

3,4'-Dimethoxy-2'-hydroxychalcone is a reaction component and useful scaffold for the synthesis of complex compounds. This chemical is an intermediate in the synthesis of various pharmaceuticals, such as anti-tuberculosis drugs, cancer chemotherapeutics and antibiotics. 3,4'-Dimethoxy-2'-hydroxychalcone has been shown to be a versatile building block that can be used to synthesize both natural products and pharmaceuticals. This compound also has a wide range of applications in the production of fine chemicals.

2'-Fluoro-4'-hydroxyacetophenone is a glycosylated molecule that is used in phase transfer catalysis. It is a glycoside that can undergo the glycosylation reaction and can be used as a phase transfer reagent. 2'-Fluoro-4'-hydroxyacetophenone has been studied for its potential use in the synthesis of xylosides and selenadiazoles. In addition, it has shown anti-inflammatory properties, which may be due to its inhibition of prostaglandin synthesis.

7-Nitrocoumarin is an agent that inhibits the growth of protozoa by inhibiting enzyme activities, specifically those involved in glycolysis. It has been shown to be a potent inhibitor of surface proteins and functional assays. 7-Nitrocoumarin is also active against trophozoites in vitro. The compound has been shown to be nontoxic to mammalian cells, with a constant of 0.3 μM for inhibition of resazurin reduction. The mechanism of action for 7-nitrocoumarin is not well understood, but it may involve oxidation products such as nitro groups, which are indicated by the prefix '7-'.

Applications The formation of p-Cresol-(methyl-13C) via phenol methylation at higher temperature from the deactivation of basic catalyst.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Borodina, I. B., et al.: Russ. J. Phys. Chem., 80, 892-898 (2006)

Applications Triethylborane reacted with 8-hydroxyquinoline to synthesize three 8--​hydroxyquinolato (q) boron compounds B(C2H5)​2q (1)​, BPh2q (2)​, and B(2-​naph)​2q (3).
References Wu, Q., et al.: Chem. Mater., 12, 79 (2000).

Codeine Impurity F is a biochemical that is an impurity of codeine. Codeine Impurity F is a byproduct of the enzymatic reaction with morphine and the bacterial strain Pseudomonas putida. Codeine Impurity F has been shown to inhibit the growth of gram-negative bacteria, including Escherichia coli and Salmonella enterica, by binding to cellular membranes and inhibiting their function. It also binds to RNA in vitro and prevents translation of mRNA from its ribosome complex. The hydroxyl group on Codeine Impurity F binds to aluminium ions, which may interfere with the absorption of other drugs such as ampicillin or tetracycline. This impurity has been shown to have an effect on biological products such as immunoglobulins and albumin.

(S)-3',5'-Bis(trifluoromethyl)-1-phenethanol is a choline derivative that is used in the treatment of liver cancer. It has been shown to increase the permeability of cell membranes and to suppress the growth of tumor cells by inhibiting protein synthesis. (S)-3',5'-Bis(trifluoromethyl)-1-phenethanol can be used as a surfactant and a hydrophobic solvent for optimization of reaction parameters. This chemical also has been shown to be active against Gram-positive bacteria such as Staphylococcus aureus and Enterococcus faecalis, but not against Gram-negative bacteria such as Escherichia coli or Pseudomonas aeruginosa. The mechanism of this effect is mediated by chloride ions that act as bioreductive agents on cellular membranes, leading to increased permeability and cell death.

3-Chloro-4-nitropyridine 1-oxide is the condensation product of 2-chloro-3-nitropyridine and nitric acid. 3-Chloro-4-nitropyridine 1-oxide has an isomeric nature and can be purified by recrystallization from water. The compound has a molecular weight of 286.1 g/mol and a monoclinic crystal structure. It has two n-oxides, which are isomers of each other, with nmr spectra that differ by the shift in the chemical shifts of the protons on the aromatic ring. 3-Chloro-4-nitropyridine 1-oxide condenses with lanthanides to form lanthanide complexes, such as Eu(III)(3,5'-ClO 4 ) 2 . This compound is also used in the synthesis of phenoxathiine derivatives that have antihypertensive activity.

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Naphthalene is a chemical that is used for wastewater treatment and as a pesticide. It is also used in the manufacturing of polymers, resins, and plastics. Naphthalene has antimicrobial properties due to its hydrophobic effect. Naphthalene's antimicrobial activity is based on its ability to react with the skeleton of bacterial cells and disrupt the integrity of their outer membrane. Naphthalene also interacts with proteins and DNA, causing cell death. The molecular mechanisms of naphthalene's antibacterial activity are not well understood but have been studied using Hl-60 cells, which are immortalized human monocytic leukemia cells. This study showed that naphthalene affects the cell cycle by inhibiting protein synthesis in bacteria through binding to ribosomes or by disrupting the dna replication process.

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