Disodium 1,5-naphthalenedisulfonate (CAS 1655-29-4) is a water-soluble naphthalene disulfonic acid salt in which the two sulfonate groups occupy positions 1 and 5, giving a linear, symmetric and rigid anionic scaffold. It is a white to off-white crystalline solid, freely soluble in water and sparingly soluble in organic solvents, and it is thermally stable under ordinary
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L-Valine benzyl ester p-toluenesulfonate (CAS 16652-76-9), commonly written H-Val-OBzl.TosOH, is the crystalline tosylate salt of the benzyl ester of L-valine. It is a white to off-white solid melting near 160 to 162 degrees Celsius, soluble in polar organic solvents such as methanol, ethanol, dichloromethane and dimethylformamide, and it is stable when kept dry and cool.
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2-Methoxyethyl p-toluenesulfonate (CAS 17178-10-8), also named 2-methoxyethyl 4-methylbenzenesulfonate, p-toluenesulfonic acid 2-methoxyethyl ester or 2-methoxyethyl tosylate, is the tosylate ester of 2-methoxyethanol. It is a colourless to pale yellow liquid with a boiling point near 141 degrees Celsius at reduced pressure and a purity of 98 percent or higher by gas chromatography, and it is supplied
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Sodium 2-chloroethanesulfonate monohydrate (CAS 15484-44-3) is a water-soluble, crystalline alkyl sulfonate salt containing a reactive carbon-chlorine bond at the beta position, with a melting point near 292 to 296 degrees Celsius and a density of about 1.58 grams per cubic centimetre. It is a light orange to white solid that is thermally stable and easily
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4-(Ethoxyethoxy)styrene (CAS 157057-20-0), also called 1-ethenyl-4-(1-ethoxyethoxy)benzene or 1-(1-ethoxyethoxy)-4-vinylbenzene, is a colourless to pale yellow transparent liquid styrene derivative in which the phenolic hydroxyl of 4-hydroxystyrene has been masked as an acid-labile ethoxyethyl acetal. Commercial material is stabilised with a small amount of tert-butylcatechol to prevent spontaneous polymerisation, and purity is typically 98 percent or higher
2-(2,2,2-Trifluoroethoxy)phenol (CAS 160968-99-0), also known as 2,2,2-trifluoro-2′-hydroxyphenetole or 2-(trifluoroethoxy)phenol, is a fluorinated aromatic alcohol supplied as a colourless to pale liquid or low-melting solid at 98 percent purity and classified as a skin irritant. It combines a phenolic hydroxyl group with a trifluoroethoxy side chain, a substitution pattern that markedly lowers the pKa of the
This compound (CAS 160969-00-6), also named 2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl bromide or 1-(2-bromoethoxy)-2-(2,2,2-trifluoroethoxy)benzene, is a colourless transparent liquid aryl alkyl bromide with a density of about 1.5 grams per cubic centimetre and a purity of 98 percent or higher. As the name implies it contains both a trifluoroethoxy-substituted aromatic ring and a reactive 2-bromoethyl ether chain, and it
This compound, diethyl N-[4-[2-(2-amino-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamate 4-methylbenzenesulfonate (CAS 165049-28-5), is an advanced protected precursor of the antifolate anticancer drug pemetrexed disodium, sometimes designated pemetrexed intermediate INT-5. It is a solid that must be stored in the dark under inert atmosphere at room temperature because the pyrrolopyrimidinone core is sensitive to light, moisture and oxidation, and it is
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4-methylbenzenesulfonate salt of (1R,2S)-2-fluorocyclopropan-1-amine (CAS 143062-84-4), a single-enantiomer fluorinated cyclopropyl amine supplied as a white to off-white crystalline solid with a purity of 98 percent or higher and a reported boiling point near 418 degrees Celsius at 760 mmHg. The molecule pairs a small, strained cyclopropane ring bearing both a fluorine atom and a primary
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2-Aminoimidazole hemisulfate (CAS 1450-93-7), also named 2-imidazoleamine sulfate, bis(2-aminoimidazole) sulfate or 2-aminoimidazole sulfate, is the sulfuric acid salt of 2-aminoimidazole, a nitrogen-rich five-membered heterocycle related to the imidazole alkaloids found in marine sponges. It is a white to off-white crystalline solid with a melting point near 270 degrees Celsius, a reported boiling point of about
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Aminoacetonitrile bisulfate (CAS 151-63-3), also described as aminoacetonitrile hydrogen sulfate, sulfuric acid compound with 2-aminoacetonitrile or aminoacetonitrile sulfate, is the sulfuric acid salt of the simplest alpha-aminonitrile. The free nitrile is a low-boiling, strongly basic and hazardous liquid that is awkward to store and dose, so the material is supplied as the stable, water-soluble crystalline
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N-Ethyl-N-methyl)ethanamine(CAS 15180-47-9), also named N-ethyl-N-[(triethoxysilyl)methyl]ethanamine or (diethylaminomethyl)triethoxysilane, is a bifunctional organosilicon reagent that combines a tertiary amine and a triethoxysilane group on the same silicon-carbon tether. It is a colourless to pale yellow liquid with a distinctly amine-like odour, is moisture sensitive and hydrolyses on contact with water or humid air, so it is stored
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Sodium xylenesulfonate (CAS 1300-72-7) is an anionic hydrotrope produced by sulfonating xylene and neutralising the resulting sulfonic acid with sodium hydroxide. It is normally traded as a colourless to pale yellow aqueous solution containing about 40 percent active matter, although a spray-dried solid grade is also available for powder formulations. Unlike a conventional surfactant it
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R salt, or disodium 2-naphthol-3,6-disulfonate (CAS 135-51-3), is a water-soluble naphthalene derivative that carries a phenolic hydroxyl group flanked by two sodium sulfonate groups and is also known as 3-hydroxy-2,7-naphthalenedisulfonic acid disodium salt or R acid disodium salt. The commercial product is usually a pale grey to beige powder with an assay around 85 to
Chloromethyl dimethyl ethoxysilane (CAS 13508-53-7), also written as (chloromethyl)(ethoxy)dimethylsilane, is a bifunctional organosilicon compound that combines a hydrolytically active ethoxy group with a reactive chloromethyl substituent bonded directly to silicon. It is a colourless liquid of moderate volatility that is flammable, corrosive and moisture sensitive, and is therefore stored under an inert atmosphere at two
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Palladium(II) sulfate (CAS 13566-03-5) is an inorganic palladium salt described as a hygroscopic red-brown solid that is normally supplied and handled as the dihydrate and is moderately soluble in water and dilute acid. As a platinum-group metal compound it is expensive and tightly traded, so industrial users recover and recycle palladium from spent solutions rather
