Phenols

Hypericin (Standard) is the analytical standard of Hypericin. This product is intended for research and analytical applications. Hypericin is a naturally occurring substance found in Hyperlcurn perforatum L. Hypericin is an inhibitor of PKC (protein kinase C), MAO (monoaminoxidase), dopamine-beta-hydroxylase, reverse transcriptase, telomerase and CYP (cytochrome P450). Hypericin shows antitumor, antiviral, antidepressive activities, and can induce apoptosis.

Pinocembrin (Standard) is the analytical standard of Pinocembrin. This product is intended for research and analytical applications. Pinocembrin ((+)-Pinocoembrin) is a flavonoid found in propolis, acts as a competitive inhibitor of histidine decarboxylase, and is an effective anti-allergic agent, with antioxidant, antimicrobial and anti-inflammatory properties.

Neochlorogenic acid (Standard) is the analytical standard of Neochlorogenic acid. This product is intended for research and analytical applications. Neochlorogenic acid is a natural polyphenolic compound found in dried fruits and other plants. Neochlorogenic acid inhibits the production of TNF-α and IL-1β. Neochlorogenic acid suppresses iNOS and COX-2 protein expression. Neochlorogenic acid also inhibits phosphorylated NF-κB p65 and p38 MAPK activation.

Isoferulic acid (Standard) (3-Hydroxy-4-methoxycinnamic acid (Standard)) is the analytical standard of Isoferulic acid (HY-N0761). This product is intended for research and analytical applications. Isoferulic acid (3-Hydroxy-4-methoxycinnamic acid) is an orally active cinnamic acid derivative. Isoferulic acid exhibits hypoglycemic, antiviral, and antioxidant activities. Isoferulic acid can also inhibit fructose- and glucose-mediated protein glycation. Isoferulic acid can be used in the research of diseases such as diabetes.

Tetrahydrocurcumin (Standard) is the analytical standard of Tetrahydrocurcumin. This product is intended for research and analytical applications. Tetrahydrocurcumin is a Curcuminoid found in turmeric (Curcuma longa) that is produced by the reduction of Curcumin. Tetrahydrocurcumin inhibit CYP2C9 and CYP3A4.

(-)-Butin (Standard) is the analytical standard of (-)-Butin (HY-N6020). This product is intended for research and analytical applications. (-)-Butin is a enantiomer of Butin (HY-N6020B). Butin is a major biologically active flavonoid isolated from the heartwood of Dalbergia odorifera, with strong antioxidant, antiplatelet and anti-inflammatory activities.

Boldine (Standard) is the analytical standard of Boldine (HY-N6973). This product is intended for research and analytical applications. Boldine is an aporphine alkaloid telomerase (telomerase) inhibitor (IC₅₀ of 0.17 μM for TERT) and a pannexin/connexin hemichannel blocker, with oral activity and blood-brain barrier permeability. Boldine inhibits telomerase activity through direct interaction with the telomerase ribonucleoprotein and non-competitive binding near the TERT active site, and downregulates hTERT mRNA while shifting alternative splicing toward non-functional transcripts. Boldine blocks Panx1, Cx43, Cx26, and Cx30 hemichannels as well as P2X7 receptor-mediated calcium influx. Boldine exhibits antioxidant, anti-inflammatory, antiproliferative, and cytotoxic activities by scavenging ROS, inhibiting NFκB, dephosphorylating SGK1, and reducing TNF-alpha levels. Boldine can be used in research on breast cancer, Alzheimer's disease, glioblastoma, diabetes, and spinal cord injury.

γ-Tocopherol (Standard) is the analytical standard of γ-Tocopherol. This product is intended for research and analytical applications. γ-Tocopherol (D-γ-Tocopherol) is a potent cyclooxygenase (COX) inhibitor. γ-Tocopherol is a naturally occurring form of Vitamin E in many plant seeds, such as corn oil and soybeans. γ-Tocopherol possesses antiinflammatory properties and anti-cancer activity.

(±)-Naringenin (Standard) is the analytical standard of (±)-Naringenin. This product is intended for research and analytical applications. (±)-Naringenin is a naturally-occurring flavonoid. (±)-Naringenin displays vasorelaxant effect on endothelium-denuded vessels via the activation of BK_Ca channels in myocytes.

3-Nitro-L-tyrosine (Standard) is the analytical standard of 3-Nitro-L-tyrosine (HY-113248). This product is intended for research and analytical applications. 3-Nitro-L-tyrosine serves as a biomarker of oxidative stress. 3-Nitro-L-tyrosine attenuates the pressor and vasoconstrictive effects of angiotensin II by inhibiting the α₁-adrenergic receptor-mediated signaling pathway, and participates in hemodynamic regulation under pathological conditions such as inflammation and ischemia. 3-Nitro-L-tyrosine can be used in studies related to atherosclerosis, ischemia-reperfusion and sepsis.

3-O-Methyldopa (Standard) is the analytical standard of 3-O-Methyldopa. This product is intended for research and analytical applications. 3-O-Methyldopa (3-Methoxy-L-tyrosine) is a metabolite of L-DOPA which is formed by catechol-O-methyltransferase (COMT). 3-O-Methyldopa competitively inhibits the pharmacodynamics of l-DOPA and dopamine.

trans-Caffeic acid (Standard) is the analytical standard of trans-Caffeic acid (HY-121231). This product is intended for research and analytical applications. trans-Caffeic acid is a hydroxycinnamic acid widely distributed in coffee, propolis, and Lamiaceae herbs. trans-Caffeic acid exhibits significant antioxidant and photoprotective activities, and can be used in cancer-related research. trans-Caffeic acid readily undergoes reversible isomerization to form its cis-isomer in protic solvents, under high temperature, ultraviolet radiation, and stress conditions. Binding of trans-Caffeic acid with aluminum, lead, or copper ions attenuates isomerization and inhibits the formation of vinylcatechol, while complexation with lead or copper ions also promotes the formation of aesculetin.

Sinomenine (Standard) is the analytical standard of Sinomenine. This product is intended for research and analytical applications. Sinomenine, an alkaloid extracted from?Sinomenium acutum, is a blocker of the NF-κB activation. Sinomenine also is an activator of μ-opioid receptor.

Phenylephrine (hydrochloride) (Standard) is the analytical standard of Phenylephrine (hydrochloride). This product is intended for research and analytical applications. (R)-(-)-Phenylephrine hydrochloride is a selective α1-adrenoceptor agonist with pKis of 5.86, 4.87 and 4.70 for α1D, α1B and α1A receptors respectively.

Clofoctol (Standard) is the analytical standard of Clofoctol. This product is intended for research and analytical applications. Clofoctol is a bacteriostatic antibiotic. Clofoctol is used in the treatment of respiratory tract and ear, nose and throat infections caused by Gram-positive bacteria. Clofoctol is only functional against Gram-positive bacteria and can penetrate into human lung tissue. Clofoctol is also an inhibitor of prostate cancer. Clofoctol has antiviral potency.

Salvianolic acid A (Standard) is the analytical standard of Salvianolic acid A. This product is intended for research and analytical applications. Salvianolic acid A could protect the blood brain barrier through matrix metallopeptidase 9 (MMP-9) inhibition and anti-inflammation.

Hydroxytyrosol (Standard) (DOPET (Standard)) is the analytical standard of Hydroxytyrosol (HY-N0570). This product is intended for research and analytical applications. Hydroxytyrosol is an orally active, blood-brain barrier-permeable multi-active compound with multiple effects including antibacterial, antioxidant, anti-platelet aggregation, and neuroprotective activities. Hydroxytyrosol not only inhibits the growth of Vibrio by increasing bacterial membrane permeability, but also interacts with DNA and mediates supercoiled DNA relaxation. Meanwhile, Hydroxytyrosol effectively reduces thrombosis and inhibits lipid oxidation by inhibiting COX activity and promoting vascular nitric oxide production. In terms of neuroprotection, Hydroxytyrosol significantly alleviates neuronal apoptosis and inflammatory responses by up-regulating the expression level of ERβ, thereby improving cognitive function in Alzheimer's disease models. Hydroxytyrosol has been widely used in scientific research related to Vibrio infection, arterial thrombosis, Alzheimer's disease and other related fields.

Carvacrol (Standard) is the analytical standard of Carvacrol. This product is intended for research and analytical applications. Carvacrol is an orally active and blood-brain barrier-permeable monoterpenic phenol that can be extract from an abundant number of aromatic plants, including thyme and oregano, possessing antioxidant, antibacterial, antifungal, anticancer, anti-inflammatory, hepatoprotective, spasmolytic, and vasorelaxant properties. Carvacrol also causes cell cycle arrest in G0/G1, downregulates Notch-1, and Jagged-1, and induces apoptosis. Carvacrol is used in low concentrations as a food flavoring ingredient and preservative, as well as a fragrance ingredient in cosmetic formulations.

Octyl gallate (Standard) is the analytical standard of Octyl gallate. This product is intended for research and analytical applications. Octyl gallate (Progallin O) is widely used as a food additive, with antimicrobial and antioxidant activity. Octyl gallate (Progallin O) shows selective and sensitive fluorescent property. Octyl gallate shows a marked antiviral effect against HSV-1, vesicular stomatitis virus (VSV) and poliovirus.

α-Arbutin (Standard) is the analytical standard of α-Arbutin. This product is intended for research and analytical applications. α-Arbutin (4-Hydroxyphenyl α-D-glucopyranoside) is emerging as popular and effective skin whiteners, acting as tyrosinase inhibitor.