3-O-Methyltolcapone-d₄  (Synonyms: Ro 40-7591-d₄)

3-O-Methyltolcapone-d₄ (Ro 40-7591 d₄) is a deuterium labeled 3-O-Methyltolcapone (HY-174062). 3-O-Methyltolcapone (Ro 40-7591) is a metabolite of Tolcapone (HY-17406). Tolcapone (Ro 40-7592) is a selective, potent and orally active COMT inhibitor with an IC₅₀of 773 nM. Tolcapone can inhibits α-syn and Aβ₄₂ oligomerization and fibrillogenesis. Tolcapone can cause oxidative stress and induce cancer cells apoptosis and ROS production. Tolcapone can be used for the researches of cancer and neurological disease, such as Parkinson disease and neuroblastoma^{[1][2][3][4][5][6]}.

1. This compound can be used as a tracer.
2. This compound can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.

291.29

C₁₅H₉D₄NO₅

2469274-07-3

134612-80-9

O=C(C1=CC([N+]([O-])=O)=C(O)C(OC)=C1)C2=C([2H])C([2H])=C(C)C([2H])=C2[2H]

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Poonsiri T, et al. 3-O-Methyltolcapone and Its Lipophilic Analogues Are Potent Inhibitors of Transthyretin Amyloidogenesis with High Permeability and Low Toxicity. Int J Mol Sci. 2023 Dec 29;25(1):479.  [Content Brief]

  [2]. De Santi C, et al. Catechol-O-methyltransferase: variation in enzyme activity and inhibition by entacapone and tolcapone. Eur J Clin Pharmacol. 1998 May;54(3):215-9.  [Content Brief]

  [3]. Di Giovanni S, et al. Entacapone and tolcapone, two catechol O-methyltransferase inhibitors, block fibril formation of alpha-synuclein and beta-amyloid and protect against amyloid-induced toxicity. J Biol Chem. 2010 May 14;285(20):14941-14954.  [Content Brief]

  [4]. Ceravolo R, et al. 18F-dopa PET evidence that tolcapone acts as a central COMT inhibitor in Parkinson's disease. Synapse. 2002 Mar 1;43(3):201-7.  [Content Brief]

  [5]. Maser T, et al. Tolcapone induces oxidative stress leading to apoptosis and inhibition of tumor growth in Neuroblastoma. Cancer Med. 2017 Jun;6(6):1341-1352.  [Content Brief]

  [6]. Jorga K, et al. Metabolism and excretion of tolcapone, a novel inhibitor of catechol-O-methyltransferase. Br J Clin Pharmacol. 1999 Oct;48(4):513-20.  [Content Brief]