Industrial Grade

Baloxavir Impurity 51 (CAS 2136287-61-9) is a defined related substance of the antiviral drug baloxavir marboxil, identified by its specific structure and CAS registry number as a process-related impurity of the influenza treatment. It is supplied as a reference-standard-grade solid, typically in milligram quantities under catalogue numbers such as C4X-210851, and it is intended solely

1,2-Bis(1-ethoxyethoxy)-4-vinylbenzene (CAS 186768-92-3) is a dialkoxy-protected styrene monomer in which both hydroxyl groups of the catechol-like 3,4-dihydroxystyrene unit are masked as ethoxyethyl acetals while the vinyl group remains free for polymerisation. It is a colourless to pale liquid supplied at 98 percent purity for research and industrial manufacturing use, and it is normally stabilised against

This compound (CAS 200000-59-5), chemically (2R,3S)-2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)morpholine 4-methylbenzenesulfonate, is an advanced chiral intermediate in the manufacture of the antiemetic drug aprepitant. It is a solid that should be stored dry, cool and protected from light and moisture, and it is catalogued as a pharmaceutical intermediate rather than a finished active substance. The molecule carries several defined

This compound (CAS 1803573-21-8), named 2-(bis(tert-butoxycarbonyl)amino)-5-bromopyridin-3-yl 4-methylbenzenesulfonate or imidodicarbonic acid 2-[5-bromo-3-[[(4-methylphenyl)sulfonyl]oxy]-2-pyridinyl]-, 1,3-bis(1,1-dimethylethyl) ester, is a heavily functionalised pyridine building block supplied as a solid at 98 percent purity for laboratory and manufacturing use. Three reactive sites coexist in the molecule: an aryl bromide, a tosylate ester and two acid-labile tert-butoxycarbonyl groups, so it must be

Ethyl 2-(2-chloroethoxy)acetate (CAS 17229-14-0), also listed as ethyl 2-chloroethoxyl acetic acid or ethyl 2-chloroethoxy acetate, is a colourless liquid bifunctional ester containing a reactive primary alkyl chloride and an ethyl ester on a short glycol-like backbone. It is stored sealed, dry and refrigerated at two to eight degrees Celsius because the chloroether linkage is sensitive

L-Leucine benzyl ester p-toluenesulfonate (CAS 1738-77-8), commonly abbreviated H-Leu-OBzl.TosOH, is the crystalline tosylate salt of the benzyl ester of L-leucine and is classified as a dangerous good for transport. It is a white to off-white solid that dissolves in methanol, ethanol, dimethylformamide and dichloromethane and is stable in storage when kept dry and cool away

H-Phe-OBzl.TosOH, or L-phenylalanine benzyl ester p-toluenesulfonate (CAS 1738-78-9), is the tosylate salt of the benzyl ester of L-phenylalanine. It is a white crystalline solid with good storage stability when kept dry, and it is soluble in polar aprotic and alcoholic solvents such as dimethylformamide, dimethyl sulfoxide, methanol and dichloromethane, and only sparingly soluble in water.

Linezolid mesylate ester (CAS 174649-09-3), also known as linezolid related compound D, Linezolid USP Related Compound D or (R)-[3-(3-fluoro-4-morpholinophenyl)-2-oxooxazolidin-5-yl]methyl methanesulfonate, is a white to off-white crystalline solid supplied at 99 percent purity in quantities ranging from ten milligrams to several grams. It is the mesylate ester of the oxazolidinone alcohol at the heart of the

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.