3-(2-Hydroxyphenyl)propanoic acid (Melilotic acid, Melilotate, 2-hydroxybenzenepropanoic acid) is an endogenous metabolite.

3-(3-Hydroxyphenyl)propionic acid (m-Hydroxyphenylpropionic acid, 3-Hydroxyhydrocinnamic acid) is one of the major metabolites of ingested caffeic acid and of the phenolic degradation products of proanthocyanidins by the microflora in the colon.

3-(3-Methoxyphenyl)propionic acid is a naturally occurring human metabolite, It is an organic acid and excreted in human urine.

3-(4-Hydroxyphenyl)-1-propanol is a reagent in the synthesis of (−)-Centrolobine, which is an anti-Leishmania agent.

3-(Methylthio)propionic acid (3-methylthiopropionate, 4-Thiapentanoic acid, 3-Methylsulfanylpropionic acid) is a thia fatty acid acid consisting of propionic acid with a methylthio substituent at the 3-position and an intermediate in mammalian methionine metabolism in vitro.

3-Amino-4-hydroxybenzoic acid is a monohydroxybenzoic acid.

3-Amino-4-methylpentanoic acid (beta-Leucine, DL-Homovaline, DL-beta-leucine, beta-Aminoisocaproic acid) is a human metabolite.

3-Aminobenzamide (3-ABA , 3-Amino Benzamide, 3-AB) is a potent inhibitor of Poly(ADP-ribose)polymerase (PARP) and inhibits cell apoptosis after SCI (Spinal Cord Injury) in caspase-independent way.

3-Aminobenzamide (3-ABA , 3-Amino Benzamide, 3-AB) is a potent inhibitor of Poly(ADP-ribose)polymerase (PARP) and inhibits cell apoptosis after SCI (Spinal Cord Injury) in caspase-independent way.

3-Aminoisobutyric acid (3-Amino-2-methylpropanoic acid, 3-Aminoisobutyrate, β-aminoisobutyric acid) is a product formed by the catabolism of thymine.

3-Aminopropionitrile fumarate (Beta-Aminopropionitrile fumarate) is an organic compound and antirheumatic agent used in veterinary medicine.

3-Aminopropionitrile fumarate (Beta-Aminopropionitrile fumarate) is an organic compound and antirheumatic agent used in veterinary medicine.

3-Carene (Carene, Delta-3-Carene) is a bicyclic monoterpene in essential oils extracted from pine trees. 3-Carene have potent pharmacological effects on COX-2 overexpression and LPS-induced migration of Raw264.7 macrophages. 3‐carene is shown to significantly stimulate the activity and expression of alkaline phosphatase, an early phase marker of osteoblastic differentiation.

3-chloro-5-hydroxybenzoic Acid is a selective agonist of the lactate receptor GPR81.

3-chloro-5-hydroxybenzoic Acid is a selective agonist of the lactate receptor GPR81.

3-Chloro-L-tyrosine, a specific marker of myeloperoxidase-catalyzed oxidation, is markedly elevated in low density lipoprotein isolated from human atherosclerotic intima.

3-Deazaadenosine is an inhibitor of S-adenosylhomocysteine hydrolase, with a Ki of 3.9 µM, and has anti-inflammatory, anti-proliferative and anti-HIV activity.

3-Deazaadenosine HCl (3-DZA, c3Ado) is a potent inhibitor of S-adenosylhomocysteine hydrolase with Ki of 3.9 µM. 3-Deazaadenosine HCl inhibits bacterial lipopolysaccharide-induced transcription of TNF-α and IL-1β. 3-Deazaadenosine HCl inhibits the transcriptional activity of NF-κB, prevents FCS-induced Ras carboxyl methylation and reduces FCS-induced ERK1/2 and Akt phosphorylation. 3-Deazaadenosine HCl has anti-inflammatory, anti-proliferative and anti-HIV activities.

3-Deazaadenosine HCl (3-DZA, c3Ado) is a potent inhibitor of S-adenosylhomocysteine hydrolase with Ki of 3.9 µM. 3-Deazaadenosine HCl inhibits bacterial lipopolysaccharide-induced transcription of TNF-α and IL-1β. 3-Deazaadenosine HCl inhibits the transcriptional activity of NF-κB, prevents FCS-induced Ras carboxyl methylation and reduces FCS-induced ERK1/2 and Akt phosphorylation. 3-Deazaadenosine HCl has anti-inflammatory, anti-proliferative and anti-HIV activities.

3-Deazaadenosine HCl (3-DZA, c3Ado) is a potent inhibitor of S-adenosylhomocysteine hydrolase with Ki of 3.9 µM. 3-Deazaadenosine HCl inhibits bacterial lipopolysaccharide-induced transcription of TNF-α and IL-1β. 3-Deazaadenosine HCl inhibits the transcriptional activity of NF-κB, prevents FCS-induced Ras carboxyl methylation and reduces FCS-induced ERK1/2 and Akt phosphorylation. 3-Deazaadenosine HCl has anti-inflammatory, anti-proliferative and anti-HIV activities.

3-Furoic acid is an organic acid regularly occurring in urine of healthy individuals.

3-Hydroxybenzaldehyde (3-HBA), one of the benzaldehydes commonly found in nature, is produced by 3-hydroxybenzyl-alcohol dehydrogenase, and is a substrate of aldehyde dehydrogenase (ALDH) in rats and humans (ALDH2). 3-Hydroxybenzaldehyde exhibits vasculoprotective effects.

3-Hydroxybenzoic acid (m-Hydroxybenzoic acid, 3-Carboxyphenol, m-Salicylic acid) is used as an intermediate in the synthesis of plasticisers, resins, pharmaceuticals, etc.

3-Hydroxybenzyl alcohol is used as an intermediate to produce other chemicals.

3-Hydroxybutyric acid (BHB) is a small molecule metabolite that is elevated in type I diabetes.,

3-Hydroxybutyric acid (BHB) is a small molecule metabolite that is elevated in type I diabetes.,

3-hydroxycinnamic acid (meta-Coumaric acid, m-Coumaric acid, m-Coumarate) is an aromatic acid that can be found in vinegar.

3-Hydroxyflavone (Flavon-3-ol, 3-HF, 3-Hydroxy-2-phenylchromone) is the simplest molecule of the flavonol class that is usually used in synthesis of biologically active molecules.

3-Hydroxyisovaleric acid is a normal human metabolite excreted in the urine.

3-Hydroxy picolinic acid is a picolinic acid derivative and is a member of the pyridine family. It is used as a matrix for nucleotides in MALDI mass spectrometry analyses

3-Indoleacetonitrile, a plant growth hormone, is a light-induced auxin-inhibitory substance that is isolated from light-grown cabbage (Brassica olearea L.) shoots.

3-Indolepropionic acid (IPA, indole-3-propionic acid), a gut microbial metabolite, is a potent neuroprotective antioxidant and plant auxin.

3-Indolepropionic acid (IPA, indole-3-propionic acid), a gut microbial metabolite, is a potent neuroprotective antioxidant and plant auxin.

3-MA (3-Methyladenine) is a selective PI3K inhibitor for Vps34 and PI3Kγ with IC50 of 25 μM and 60 μM in HeLa cells; blocks class I PI3K consistently, whereas suppression of class III PI3K is transient, and also blocks autophagosome formation. Solutions are unstable and should be fresh-prepared.

3-Maleimidopropionic acid is an alkyl chain-based PROTAC linker that is applicable to the synthesis of PROTACs.

3-Methoxybenzamide (3-MBA) is a competitive inhibitor of poly(ADP-ribose) synthetase with Ki values of less than 2 μM and also inhibits ADP-ribosyltransferase (ADPRT)

3-Methoxybenzoic acid (m-Anisic acid, 3-Methoxybenzoate, 3-Anisic acid, m-Methylsalicylic acid) is a food additive that acts as a flavouring ingredient.