N-Acetyl-L-tyrosine (Ac-Tyr-OH) is a side chain reaction of tyrosine. It converts to tyrosine and then can be used in neurotransmitter treatment as a precursor of cathecholamine.

3-Nitro-L-tyrosine (3-Nitrotyrosine) is the major product from the spontaneous reaction of peroxynitrite with tyrosine. Formation of nitrotyrosine can indicate the formation of peroxynitrite by a nitric oxide (NO)-dependent oxidative damage.

DL-m-Tyrosine shows effects on Arabidopsis root growth.

D-Tyrosine, the D-isomer of tyrosine, acts as a negative regulator of melanin synthesis by inhibiting tyrosinase activity. Furthermore, D-Tyrosine also inhibits biofilm formation and induces the self-dispersal of biofilms, while not affecting bacterial growth.

DL-o-Tyrosine is a metabolite of Phenylalanine and is a precursor in the formation of catecholamines. It is used as biomarkers of protein oxidative damage in β-thalassemia.

DL-Tyrosine is a natural product.

3-Chloro-L-Tyrosine (Chlorotyrosine), a specific marker of myeloperoxidase-catalyzed oxidation, is markedly elevated in low-density lipoprotein isolated from human atherosclerotic intima. In particular, myeloperoxidase halogenates tyrosine residues in plasma proteins and generates 3-chlorotyrosine (CY). The detection of free chlorotyrosine in blood or urine arises from the degradation of these chlorinated proteins. CY concentrations may be useful for monitoring the activation of neutrophils in asthmatic patients.

L-Tyrosine ((S)-Tyrosine) is a naturally occurring tyrosine and is synthesized in vivo from L-phenylalanine, considered a non-essential amino acid. L-Tyrosine(L-p-Tyrosine) is the levorotatory isomer of the aromatic amino acid tyrosine.

Glycyltyrosine, a dipeptide composed of tyrosine and glycine, is an incomplete breakdown product of protein catabolism or protein digestion.

3,5-Diiodo-L-tyrosine dihydrate is a natural product.

Desaminotyrosine (3-(4-Hydroxyphenyl)propionic acid) is a microbially associated metabolite. Desaminotyrosine protects from influenza through augmentation of type I interferon signaling.

H-Tyr(3-I)-OH (3-Iodo-L-tyrosine) is an inhibitor of tyrosine hydroxylase (Ki = 0.39 M) and an intermediate in the synthesis of thyroid hormones

Liothyronine (Tresitope) is an active form of thyroid hormone, binding to β1 thyroid hormone receptor (TRβ1), and activates its activity.

1. Hypericin (Cyclosan) has antineoplastic activity. 2. Hypericin has antibiotic and antiviral activities. 3. Hypericin has antidepressive activity through inhibiting monoamine oxidase enzyme. 4. Hypericin inhibits RANKL-mediated osteoclastogenesis via affecting ERK signalling in vitro and suppresses wear particle-induced osteolysis in vivo.

Butein (2’,3,4,4’-tetrahydroxy Chalcone), a plant polyphenol, is isolated from Rhus verniciflua. It can inhibit the activation of protein tyrosine kinase, NF-κB and STAT3, and also can inhibit EGFR.

Tyramine hydrochloride is a biogenic trace amine that is generated via the decarboxylation of the amino acid tyrosine, exhibiting neuromodulatory properties as well as cardiovascular and immunological effects.

Gefitinib (ZD1839) is an EGFR first-generation inhibitor with oral activity that inhibits the EGFR 19 Del and L858R mutations. Gefitinib has antitumor activity and is used for the treatment of EGFR-mutated non-small-cell lung cancers. Gefitinib administration RESULTS in the development of the EGFR C797S resistance mutation.

Genistein (NPI 031L) is an isoflavonoid derived from soy products. It inhibits protein-tyrosine kinase and topoisomerase-II (DNA TOPOISOMERASES, TYPE II), with antineoplastic and antitumor activities.

3-Hydroxyphenylacetic acid is a rutin metabolite and an antioxidant. It has a protective biological activity in human. It is a substrate of enzyme 4-hydroxyphenylacetate 3-monooxygenase [EC 1.14.13.3] in the pathway tyrosine metabolism. 3-Hydroxyphenylace

L-Phenylalanine (3-Phenyl-L-alanine) is an essential amino acid and the precursor of the amino acid tyrosine, acts as an antagonist at α2δ calcium channels.

1. Glaucocalyxin A (Leukamenin F)-SBE-β-CD could be useful with a better solubility and sustained function in drug delivery. 2. Glaucocalyxin A activates caspase-3, decreases BAD phosphorylation, and reduces the expression of X-linked inhibitor of apoptosis protein. 3. Glaucocalyxin A inhibits Akt phosphorylation, suppresses proliferation, and promotes apoptosis in a dose-dependent manner, but not in normal glial cells. 4. Glaucocalyxin A inhibits collagen-stimulated tyrosine phosphorylation of Syk, LAT, and phospholipase Cγ2, the signaling events in collagen receptor GPⅥ pathway. 5. Glaucocalyxin A could potentially be developed as an antiplatelet and antithrombotic agent, can inhibit platelet p-selectin secretion and integrin activation by convulxin, is a GPVI selective ligand.

Daidzein (Isoflavone) is an isoflavone extract from soy, which is an inactive analog of the tyrosine kinase inhibitor genistein. It has antioxidant and phytoestrogenic properties.

N-trans-p-Coumaroyltyrosine is a natural product for research related to life sciences. The catalog number is TN6561 and the CAS number is 77201-66-2.

Vitamin K2 (Menatetrenone) is a menaquinone compound and form of vitamin K2 with potential antineoplastic activity. Menatetrenone may act by modulating the signaling of certain tyrosine kinases, thereby affecting several transcription factors including c-myc and c-fos. This agent inhibits tumor cell growth by inducing apoptosis and cell cycle arrest.

L-Azatyrosine, an antitumor antibiotic derived from Streptomyces chibaensis, exhibits the ability to restore the normal phenotypic behavior of transformed cells that carry oncogenic Ras genes.

Harmine (Telepathine) is an alkaloid isolated from seeds of Peganum harmala.

Piceatannol (Astringenin) is an anti-inflammatory, immunomodulatory and antiproliferative agent. It inhibits p56lck and syk protein tyrosine kinases and inhibits NF-κB activation and gene expression of TNF-induced. It is synthetic from the conversion of resveratrol by cytochrome P450 1B1.

(±)-Boehmenan shows potent protein-tyrosine phosphatase 1B (PTP1B) inhibitory activity in vitro with the IC(50) values of 43.5 uM, it inhibits PTP1B activity in a competitive manner. Boehmenan exhibits the potent cytotoxic effects against many cancer cell

Aquastatin A is a fungal metabolite originally isolated fromF. aquaeductuumthat has diverse biological activities.1It is active againstS. aureus(MIC = 32 μg/ml) and inhibits enoyl-acyl carrier protein reductase (Fabl; IC50= 3.2 μM) andS. aureusfatty acid synthesis (IC50= 3.5 μM).2Aquastatin A also inhibits the Na+/K+-ATPase and H+/K+-ATPase (IC50s = 7.1 and 6.2 μM, respectively), as well as protein tyrosine phosphatase 1B (PTP1B; IC50= 0.19 μM).1,3 1.Hamano, K., Kinoshita-Okami, M., Minagawa, K., et al.Aquastatin A, an inhibitor of mammalian adenosine triphosphatases from Fusarium aquaeductuum. Taxonomy, fermentation, isolation, structure determination and biological propertiesJ. Antibiot. (Tokyo)46(11)1648-1657(1993) 2.Kwon, Y.-J., Fang, Y., Xu, G.-H., et al.Aquastatin A, a new inhibitor of enoyl-acyl carrier protein reductase from Sporothrix sp. FN611Biol. Pharm. Bull.32(12)2061-2064(2009) 3.Seo, C., Soh, J.H., Oh, H., et al.Isolation of the protein tyrosine phosphatase 1B inhibitory metabolite from the marine-derived fungus Cosmospora sp. SF-5060Bioorg. Med. Chem. Lett.19(21)6095-6097(2009)

Isocryptotanshinone inhibits protein tyrosine phosphatase 1B (PTP1B) activity with 50% inhibitory concentration values of 56.1±6.3 μM, PTP1B acts as a negative regulator of insulin signaling, and selective inhibition of PTP1B has served as a potential drug target for the treatment of type 2 diabetes.

Rhein-8-O-beta-D-glucopyranoside(Rhein-8-glucoside calcium (Rhein-8-glucoside calcium salt) salt) shows moderate bioactivity against human Protein Tyrosine Phosphatase 1B (hPTP1B) in vitro.

Chrysophanol triglucoside, an anthraquinone derivative obtained from Cassia obtusifolia, demonstrates inhibitory activity against protein tyrosine phosphatases 1B (PTP1B) and α-glucosidase, with half-maximal inhibitory concentration (IC50) values of 80.17 μM and 197.06 μM, respectively. This compound exhibits potential for diabetes research.

2,3,4,6,8-Pentahydroxy-1-methylxanthone, a xanthone derivative of Wardomyces anomalus, exhibits significant antioxidant activities and functions as an inhibitor of the p56 lck tyrosine kinase. It has potential applications in the treatment of cardiovascular disease [1].

3-Epicorosolic acid has a potent inhibitory effect on Epstein-Barr virus early antigen (EBV-EA) induction, it has potential anti-inflammatory activities as well as cancer chemopreventive activity.3-Epicorosolic acid shows both potent α-glucosidase and pro

1,5-Dihydroxyxanthone exhibits the epidermal growth factor receptor (EGFR) -tyrosine kinase inhibitory activity, with the IC50 value of 90.34 nM. It may have anticholinesterase activity on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) enzym

Uralenol significantly shows the inhibitory activities against the PTP1B enzyme; it also shows inhibitory activities on mushroom tyrosinase using l-tyrosine as substrate( IC50 =49.5 μM). Uralenol shows potent anti-proliferation effects on ER-positive breast cancer MCF-7 cells in vitro.

Isotanshinone IIA, could non-competitively inhibit Protein Tyrosine Phosphatase 1B (PTP1B) activity with an IC50 0f 11.4 μM. is an abietane-type diterpene metabolite.

Ginsenoside Ra1 is a component from ginseng. Ginsenoside Ra1 shows significant inhibitory effects on protein tyrosine kinase (PTK) activation induced by hypoxia/reoxygenation (H/R).

Oxindole (Indolin-2-one) is an aromatic heterocyclic building block. 2-indolinone derivatives have become lead compounds in the research of kinase inhibitors.Oxindole structure has been used in receptor tyrosine kinases (RTKs) inhibitors such as SU4984 and intedanib, the RTK family represents an important therapeutic target for anti-cancer drug development.

Cassiaside B2 is an inhibitor of protein tyrosine phosphatase 1B (PTP1B) and human monoamine oxidase A (hMAO-A).Cassiaside B2 is an agonist of the 5-HT2C receptor with anti-allergic activity.Cassiaside B2 is one of the active ingredients in the naphthylpyrone reference extract (NRE).

Ficusonolide exhibits significant antidiabetic activity through its interactions with dipeptidyl peptidase-IV (DPP-IV), protein tyrosine phosphatase 1B (PTP-1B), α-glucosidase, and α-amylase.

H-Phe-Phe-OH is a dipeptide consisting of two phenylalanine (an essential amino acid and precursor to tyrosine) units linked together.

Catalpalactone exhibits high antitermitic, and cytotoxic activities, it exhibits potent inhibitory effects on lipopolysaccharide-induced NO synthesis in RAW 264.7 cells , with IC50 values of 9.80 microM. Catalpalactone can inhibit dopamine biosynthesis by

Pinusolide is a platelet activating factor ( PAF) antagonist, it may prove of therapeutic value in the treatment of hypotension, it has antileukemic potential, and could be used to treat neurodegenerative diseases. Pinusolide attenuates blockade of insulin signaling by enhancing IRS-1 tyrosine phosphorylation by the activating the AMPK pathway, indicates the targeting of AMPK represents a new therapeutic strategy for hyperglycemia-induced insulin resistance and type 2 diabetes.

4-Hydroxycinnamamide has antioxidant activity. 4-Hydroxycinnamamide derivatives are specific inhibitors of tyrosine-specific protein kinases.

(24E)-3,4-Seco-cucurbita-4,24-diene-3,26,29-trioic acid can inhibit the activity of protein tyrosine phosphatase 1B (PTP1B), with IC 50 values of 0.4uM.

Isoderrone shows inhibitory effects on α-glucosidase in vitro; it is a protein tyrosine phosphatase 1B (PTP1B) inhibitor, with IC50 value of 22.7 ± 1.7 uM, suggests that it may be a new drug for treatment of type 2 diabetes.

PTP1B-IN-21 is a compound that functions as a selective inhibitor of protein tyrosine phosphatase 1B (PTP1B; IC50=1.56 μM), demonstrating a marked preference over the structurally similar T-cell protein tyrosine phosphatase (TCPTP; IC50>100 μM). This specificity highlights its potential as a critical agent for type 2 diabetes management.

Methyllucidone is an inhibitor of STAT3 that acts by regulating the expression of the protein tyrosine phosphatase MEG2.

Batatasin III inhibits cancer migration and invasion by suppressing epithelial to mesenchymal transition and FAK-AKT signals and possesses anti-cancer activities. Batatasin III has a long-term inhibitory effect on whole-plant growth and shows germination