4-Oxocyclohexanecarboxylic acid is used in the preparation of Indomethacin (I641000) analogues used in the treatment of prostate cancer. In addition it is used in the synthesis of β-alanine derivatives as glucagon receptor antagonists.

4-Pentyn-1-ol is a useful intermediate for the pharmaceutical industry and is widely used in the synthesis of a wide range of drugs with therapeutic potential or significant effects.

4-Phenyl-1-butene can be used as a monomer precursor to synthesize poly(4-phenyl-1-butene) via heterogeneous catalytic-polymerization reaction. It is also utilized to make olefinic copolymers with different substrates, such as 11-bromo-1-undecene, ethylene, and vinylpyrrolidone, etc., for a variety of polymer applications.

4-Pyrazolecarboxylic acid is used for the synthesis of isoxazole-4-carboxylic acid derivatives and isoxazole-3,5-dicarboxamides.

4-Tert-butyl-2,6-dimethylphenylsulfur trifluoride is a deoxofluorination reagent used in an improved method of synthesis of arylsulfur trifluorides.

4-Thiazolecarboxylic Acid is a compound useful in organic synthesis.

4-thiouridine is a thiouridine in which the oxygen replaced by sulfur is that at C-4. It has a role as an affinity label and an antimetabolite. It is a thiouridine and a nucleoside analogue.

A di-substituted cyclohexane carboxylic acids used in the synthesis of macrolide antibiotics.

4,4-Dimethyl-2-pyrrolidinone is used as pharmaceutical intermediate.

4,4-Dimethyl-3,5,8-trioxabicyclo[5.1.0]octane is used in the CO2-mediated formation of chiral carbamates from meso-epoxides via polycarbonate intermediates and amine nucleophiles.

4,4,4-Trifluorobut-2-enol (cis) is used as an intermediate in organic synthesis and pharmaceutical product manufacturing, mainly in laboratory R&D and production processes.

4,4′-Dichlorobenzophenone has antiviral and antifungal abilities and plays a key role in formulating drugs against a range of viral and fungal diseases.

4,4′-Difluorobenzophenone (CAS# 345-92-6) is used as a reagent in the synthesis of diphenylmethoxypiperidine-derived dopamine uptake inhibitors. Also used as a reagent in the synthesis of 1-benzhydryl piperazine derivatives which display ACE inhibitor and antimicrobial activity.

4,4′-Dihydroxybenzophenone is a member of benzophenones.

4,4′-Dimethoxybenzophenone (CAS# 90-96-0) is a useful research chemical.

4,4′-Dimethoxytriphenylmethyl chloride can be used as a protecting agent.

4,5-Bis(diphenylphosphino)-9, 9-dimethylxanthene is used as a bidentate ligand, which finds application in hydroformylation of alkenes.

4,5-Dimethyl-1H-imidazole hydrochloride can be used in organic synthesis and pharmaceutical intermediates.

4,6-Bis(diphenylphosphino)dibenzofuran can be useful in the preparation and structural characterization of high spin cobalt complexes supported by trigonal tris(phosphinimide) ligand.

4,6-Bis(Diphenylphosphino)phenoxazine is used as a palladium catalyst in reactions involving the synthesis of triarylmethanes.

4, 6-Dibromo-dibenzothiophene is an organic synthetic intermediate and a pharmaceutical intermediate.

4,6-Dibromodibenzofuran is an organic synthetic intermediate and a pharmaceutical intermediate.

An impurity of Ticagrelor which is a reversible P2Y12 receptor antagonist and is unique in its greater and more rapid and consistent, yet reversible, inhibition of the ADP receptor.

4,6-Dichloro-3-pyridazinecarboxylic acid is an intermediate in preparation of N-Heteroarylsulfonamide derivative in the study of treatment of hyperproliferative diseases.

4,6-Dichloronicotinic acid is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff fields.

4,7-Dimethyl-1H-indene can be used in organic synthesis and pharmaceutical intermediates.

4,7-Dimethylisatin is used to prepare decamethylanthracene.

4′-Bromo-4-chlorobutyrophenone is used as a pharmaceutical & syntheses material intermediates.

Halogenated benzonitrile used in protein-binding studies of quinoxaline angiotensin II receptor antagonists.

4′-demethylpodophyllotoxin is an organic heterotetracyclic compound that is podophyllotoxin in which the methyl ether group at position 4 of the trimethoxyphenyl group has been cleaved to afford the corresponding phenol. It has a role as a metabolite. It is a furonaphthodioxole, an organic heterotetracyclic compound and a member of phenols.

4′,5,7-Trimethoxyflavone is an ether and a member of flavonoids.

Apigenin 7,4′-dimethyl ether is a dimethoxyflavone that is the 7,4′-dimethyl ether derivative of apigenin. It has a role as a plant metabolite. It is a dimethoxyflavone and a monohydroxyflavone. It is functionally related to an apigenin.

7,4′-Dimethoxyisoflavone is a natural compound isolated from the seeds of Glycine max.

4(3H)-PyriMidinone, 2,5-dichloro- can be used as organic synthesis intermediates and pharmaceutical intermediates, which are mainly used in laboratory research and development process and chemical production process.

4AA is a key intermediate in the synthesis of Penem drugs and has wide applications in the pharmaceutical industry.