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SB-242084

SB-242084 is a psychoactive drug and research chemical which acts as a selective antagonist for the 5HT2C receptor. It has anxiolytic effects, and enhances dopamine signalling in the limbic system, as well as having complex effects on the dopamine release produced by cocaine, increasing it in some brain regions but reducing it in others. It has been shown to increase the effectiveness of the selective serotonin reuptake inhibitor class of antidepressants, and may also reduce their side effects.

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SKF 82958

SKF 82958 is a synthetic compound of the benzazepine class that acts as a D1 and D5 receptor full agonist. SKF 82958 and similar D1-like-selective full agonists like SKF 81297 and 6-Br-APB produce characteristic anorectic effects, hyperactivity and self-administration in animals, with a similar but not identical profile to that of dopaminergic stimulants such as amphetamine.

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SPEZIOL G 86% PF

Speziol G 86% PF is a clear and colourless, liquid, nearly odourless at temperatures of 20°C.It is hygroscopic. On account of its properties it can be mainly used for moisturization in pharmaceutical O/W-emulsions.

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SR 142948

SR-142948 is a drug used in scientific research which is a non-peptide antagonist selective for the neurotensin receptors, although not selective between subtypes. It has been used to study the role of neurotensin in the regulation of dopamine receptor activity and glutamate signalling in the brain, and in animal studies SR-142948 blocked the effects of stimulant drugs, including MDMA.

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SR 48692

SR-48692 is a drug which acts as a selective, non-peptide antagonist at the neurotensin receptor NTS1, and was the first non-peptide antagonist developed for this receptor. It is used in scientific research to explore the interaction between neurotensin and other neurotransmitters in the brain, and produces anxiolytic, anti-addictive and memory-impairing effects in animal studies.

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SR-144528

SR-144528 is a drug which acts as a potent and highly selective CB2 receptor inverse agonist, with a Ki of 0.6nM at CB2 and 400nM at the related CB1 receptor. It is used in scientific research for investigating the function of the CB2 receptor, as well as for studying the effects of CB1 receptors in isolation, as few CB1 agonists are available which do not also show significant activity as CB2 agonists. It has also been found to be an inhibitor of acyl-coenzymeA:cholesterol acyltransferase, an effect that appears to be independent from its action on CB2 receptors.

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SRT-1720

SRT1720 is a selective activator of human SIRT1. It binds to the SIRT1 enzyme-peptide substrate complex at an allosteric site amino-terminal to the catalytic domain and lower the Michaelis constant for acetylated substrates.

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STRYCHNINE

Strychnine is a highly toxic, colorless, bitter crystalline alkaloid used as a pesticide, particularly for killing small vertebrates such as birds and rodents. The first total synthesis of strychnine was reported by the research group of R. B. Woodward in 1954. Strychnine, when inhaled, swallowed, or absorbed through eyes or mouth, causes a poisoning which results in muscular convulsions and eventually death through asphyxia. Strychnine was popularly used as an athletic performance enhancer and recreational stimulant in the late 19th century and early 20th century, due to its convulsant effects. It was thought to be similar to coffee.Strychnine poisoning in animals usually occurs from ingestion of baits designed for use against gophers, moles, and coyotes. Strychnine is also used as a rodenticide, but is not specific to such unwanted pests and may kill other small animals.Strychnine toxicity in rats is dependent on sex. It is more toxic to females than to males when administered via subcutaneous injection or intraperitoneal injection.Strychnine is rapidly metabolized by the liver microsomal enzyme system requiring NADPH and O2. Strychnine competes with the inhibitory neurotransmitter glycine resulting in an excitatory state. However, the toxicokinetics after overdose have not been well described. In most severe cases of strychnine poisoning, the patient dies before reaching the hospital. The biological half-life of strychnine is about 10 hours.

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Saccharin Sodium Dihydrate

Saccharin Sodium Dihydrate is a crystalline and odourless powder used in various pharmaceutical applications.

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Saclofen

Saclofen is a competitive antagonist for the GABAB receptor. This drug is an analogue of the GABAB agonist Baclofen. The GABAB receptor is heptahelical receptor, expressed as an obligate heterodimer, which couples to the Gi/o class of heterotrimeric G-proteins. The action of saclofen on the central nervous system is understandably modest, because G-proteins rely on an enzyme cascade to alter cell behavior while ionotropic receptors immediately change the ionic permeability of the neuronal plasma membrane, thus changing its firing patterns. These particular receptors, presynaptically inhibit N- and P/Q- VGCCs via a direct interaction of the dissociated beta gamma subunit of the g-protein with the intracellular loop between the 1st and 2nd domain of the VGCC's alpha-subunit; postsynaptically, these potentiate Kir currents. Both result in inhibitory effects.

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