Coumalic acid is a valuable platform compound which can be prepared from malic acid. Coumalic acid can be used in the flavours, fragrances and cosmetics industries, as polymer components, and as pharmaceutical scaffolds displaying anti-bronchial and -malarial activity.

5-Methyl-2-furanmethanol is a natural product that can be isolated from the essential oil of D. rupicola Biv.. 5-Methyl-2-furanmethanol also acts as a oxidative product of 2,5 dimethylfuran (DMF) by cytochrome P450 (CYP).

5-Hydroxyindole, a hydroxylated indole, can be found in a vast array of pharmacologically active agents and natural products. 5-Hydroxyindole slows desensitization of the 5-HT3 receptor-mediated ion current in N1E-115 neuroblastoma cells.

4-Methyl-5,6,7,8-tetrahydroquinoline, a tetrahydroquinoline alkaloid, is isolated from the roots of Glycyrrhiza uralensis Fisch.

4-Methyl-1-pentanol (Isohexanol) is a volatile aroma compound of red wine from cv. Kalecik Karasι.

4-Hydroxy-4-methylcyclohexanone is a useful synthetic reagent extracted from patent JP2009022162A. 4-Hydroxy-4-methylcyclohexanone can be used to synthesize trans-4-amino-1-methylcyclohexanol which is intermediate of pharmaceutical synthesis.

4-Ethylresorcinol, a derivative of resorcinol, can act as substrates of tyrosinase. 4-Ethylresorcinol possess hypopigmentary effects. 4-Ethylresorcinol attenuates mRNA and protein expression of tyrosinase-related protein (TRP)-2, and possessed antioxidative effect by inhibiting lipid peroxidation.

4-Aminobenzaldehyde (p-aminobenzaldehyde) is a useful synthetic reagent and monomer that can be used to synthesize monoazo dyes and photocurable ion exchange resins. 4-Aminobenzaldehyde is also a corrosion inhibitor of metals.

4-Allyltoluene, an aromatic compound, can elicite antennal olfactory response of Mediterranean fruit fly measured by electroantennography (EAG).

3-Methylcatechol is a building block in the chemical synthesis produced by Pseudomonas putida MC2.

3-Methylcarbazole is an carbazole alkaloid compound with anticancer effects. 3-Methylcarbazole shows growth inhibitory activity (IC50 of 25 μg/mL) on human fibrosarcoma HT-1080 cells.

3-Furanmethanol belongs to the compound class of furan with a wide range of sensory properties. 2-cyanonaphthalenes undergo photocycloaddition reactions with 3-Furanmethanol efficiently and with high degrees of regioselectivity.

3-Furaldehyde is a member of furans and an aldehyde, and can be used to synthesize the neoclerodane diterpene Salvinorin A.

3-Butenoic acid (Vinylacetic acid) can be used to synthesize bicyclic 3,6-dihydro-1,2-oxazine. Strained bicyclic 3,6-dihydro-1,2-oxazine is a reactive substrate in domino metathesis with an external alkene.

3′,5′-Dimethoxyacetophenone is a natural ketone compound with antioxidant activities. 3′,5′-Dimethoxyacetophenone is a building block in the chemical synthesis.

3,11,15,23-Tetraoxo-27ξ-lanosta-8,16-dien-26-oic acid, a lanostane-type triterpenoid, is isolated from Antrodia camphorate.

2-Sec-butyl-3-methoxypyrazine (SBMP) is a methoxypyrazine and can be identified in the ladybug species.

2-Propylheptanol is an intermediate and can be used for synthesizing a series of plasticizers by esterification with phthalic anhydride, trimellitic anhydride and adipic acid, etc.

4-Methylthiophene is an intermediate used in the synthesis of the aromatic sulfur compounds.

2-Isobutyl-3-methoxypyrazine is an aroma constituent in grapes andwines, green pepper and asparagus.

2-Hydroxymethyltetrahydropyran is a volatile compound in Sambucus williamsii (SW) seed oil. SW seed oil has potential antioxidant activity.

2-Hydroxymethyl-5-hydroxypyridine is isolated from the the matured, ripened and dried seeds of S. lychnophora.

2-Heptanol is one of chemical constituents identified in the essential oil of rhizome of Curcuma angustifolia and Curcuma zedoaria. Rhizome essential oil exhibited good antimicrobial and antioxidant activity.

2-Amino-4-methoxyphenol is a volatile constituent in the aroma concentrate of Tieguanyin teas. 2-Amino-4-methoxyphenol is used for the synthesis of pyridine analogues.

2-Acetylpyrrole is a product of model browning systems, and has been isolated as a major flavour component of many foods. 2-Acetylpyrrole has been used in the synthesis of 2-acetyl-1-pyrroline.

2′-O-(2-Methoxyethyl)guanosine (2'-O-MOE-rG), a 2′-O-methoxyethyl-modified nucleoside, can be produced by enzymatic conversion (adenosine deaminase) from 2′-O-(2-methoxyethyl)-2,6-diaminopurine riboside. 2′-O-(2-Methoxyethyl)guanosine neither effectively phosphorylated by cytosolic nucleoside kinases, nor are they incorporated into cellular DNA or RNA.

2,6-Dimethylpyrazine is a key aroma compound in Boletus edulis.

2,6,6-Trimethylbicyclo[3.1.1]heptan-3-ol is isolated from Chrysanthemum indicum L..

2,5-Furandimethanol is obtained from 5-Hydroxymethylfurfural. 5-hydroxymethylfurfural, as a building block, is considered an important intermediate due to its rich chemistry and potential availability from carbohydrates such as fructose, glucose, sucrose, cellulose and inulin.

2,5-Dimethoxybenzoic acid is an intermediate used in the synthesis of the galbulimima alkaloid GB 13.