Buy pharmaceutical chemicals online | pharmaceutical chemicals manufacturers | pharmaceutical chemicals suppliers - Worldofchemicals

chemical-categories

Aerosil

Aerosil is pure silicon dioxide, made from vaporized silicon tetrachloride oxidized in high-temperature flame with hydrogen and oxygen. Aggregated amorphous nano-sized primary particles gives free flow to powder materials. It gives thickening effect and thixotropy by dispersing to liquid materials. One of the most important applications of AEROSIL® fumed silica in the adhesives and sealants industry is its use as an active reinforcing filler to improve the mechanical properties of silicone sealants.

Properties Suppliers
Alpidem

Alpidem is an anxiolytic drug from the imidazopyridine family, related to the more well known sleeping medication zolpidem. Unlike zolpidem however, alpidem does not produce sedative effects at normal doses, and is instead used specifically for the treatment of anxiety. It was developed by Synthélabo. It was withdrawn from the French market by 1994 and is not approved for marketing anywhere in the world. It was known to act selectively on the α3 receptor subtype and to a lesser extent at the α1 subtype, of the benzodiazepine receptor. However the chemical structure of alpidem is not related to that of the benzodiazepines, and alpidem is thus sometimes referred to as a nonbenzodiazepine.

Properties Suppliers
Aniline

Aniline is an organic compound. Aniline was first isolated by destructive distillation of indigo by Otto Unverdorben. Aniline is the prototypical aromatic amine. Its main use is in the manufacture of precursors to polyurethane. Aniline is mainly produced in industry in two steps from benzene. First, benzene is nitrated using a concentrated mixture of nitric acid and sulfuric acid at 50 to 60 °C, which gives nitrobenzene. In the second step, the nitrobenzene is hydrogenated, typically at 200–300 °C in presence of various metal catalysts. Aniline reacts with carboxylic acids or more readily with acyl chlorides such as acetyl chloride to give amides. Aniline and its ring-substituted derivatives react with nitrous acid to form diazonium salts. It reacts with nitrobenzene to produce phenazine in the Wohl-Aue reaction.

Properties Suppliers
Arctiin

Arctiin is a lignan found in many plants of the Asteraceae family. It is the glucoside of arctigenin. Arctiin and arctigenin have shown anticancer effects.

Properties Suppliers
Arnolol

Arnolol is a beta blocker.

Properties
Arsenic

Arsenic is a metalloid. It occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250. The main use of metallic arsenic is for strengthening alloys of copper and especially lead. It is a common n-type dopant in semiconductor electronic devices, and the optoelectronic compound gallium arsenide is the most common semiconductor in use after doped silicon. Arsenic and its compounds, especially the trioxide, are used in the production of pesticides, herbicides, and insecticides. These applications are declining, however, as many of these compounds are being phased out. Arsenic poisoning from naturally occurring arsenic compounds in drinking water remains a problem in many parts of the world. During the 18th, 19th, and 20th centuries, a number of arsenic compounds have been used as medicines, including arsphenamine and arsenic trioxide. Arsphenamine as well as neosalvarsan was indicated for syphilis and trypanosomiasis, but has been superseded by modern antibiotics. Arsenic trioxide has been used in a variety of ways over the past 500 years, but most commonly in the treatment of cancer. Arsenic is also used in bronzing and pyrotechnics and for taxonomic sample preservation.

Properties Suppliers
Aspirin

Aspirin is a salicylate drug, often used as an analgesic to relieve minor aches and pains, as an antipyretic to reduce fever, and as an anti-inflammatory medication. It also has an antiplatelet effect by inhibiting the production of thromboxane, which under normal circumstances binds platelet molecules together to create a patch over damage of the walls within blood vessels. Because the platelet patch can become too large and also block blood flow, locally and downstream, aspirin is also used long-term, at low doses, to help prevent heart attacks, strokes, and blood clot formation in people at high risk for developing blood clots. It has also been established that low doses of aspirin may be given immediately after a heart attack to reduce the risk of another heart attack or of the death of cardiac tissue. The main undesirable side effects of aspirin are gastrointestinal ulcers, stomach bleeding, and tinnitus, especially in higher doses. In children and adolescents, aspirin is no longer used to control flu-like symptoms or the symptoms of chickenpox or other viral illnesses, because of the risk of Reye's syndrome.

Properties Suppliers
Azepane

Azepane is a heterocycle. It can be used as intermediate for pharmaceuticals , agrochemcials, zeolites, dyes , inks, rubber chemicals, textile chemicals and corrosion inhibitors.

Properties Suppliers
Bilobol

Bilobol's natural source is Gingko biloba fruits. Bilobol is an alkylresorcinol, a type of phenolic lipids composed of long aliphatic chains and phenolic rings. It is a strong skin irritant.

Properties
Bismuth

Bismuth is the most naturally diamagnetic of all metals. It has classically been considered to be the heaviest naturally-occurring stable element. Bismuth compounds are used in cosmetics, medicines, and in medical procedures. Bismuth has unusually low toxicity for a heavy metal. As the toxicity of lead has become more apparent in recent years, alloy uses for bismuth metal, as a replacement for lead, have become an increasing part of bismuth's commercial importance.

Properties Suppliers

www.worldofchemicals.com uses cookies to ensure that we give you the best experience on our website. By using this site, you agree to our Privacy Policy and our Terms of Use. X