Octinoxate-¹³C,d₃ 

Octinoxate-13C,d3 is the deuterium labeled Octinoxate (HY-W245806). Octinoxate (Octyl methoxycinnamate) is a thyroid hormone receptor agonist, reducing the levels of triiodothyronine (T3) and thyroxine (T4) and transcription levels of genes related to type II deiodinase (deio2) in Japanese Medaka. Octinoxate is commonly used as a safe ultraviolet (UV) filter used in the aquatic environment. Octinoxate inhibits CYP1A1 and CYP1B1 to regulate hyaluronan (HA) (HY-B0633A) metabolism in a PI3K pathway-dependent manner in human keratinocytes. Octinoxate also exhibits an anti-estrogenic and anti-androgenic effect in vitro and in vivo^{[1][2][3][4][5]}.

294.41

C₁₇¹³CH₂₃D₃O₃

5466-77-3

Room temperature in continental US; may vary elsewhere.

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

• [1]. Cahova J, et al. Octinoxate as a potential thyroid hormone disruptor - A combination of in vivo and in vitro data. Sci Total Environ. 2023 Jan 15;856(Pt 1):159074.  [Content Brief]

  [2]. Schmutzler C, et al. Endocrine disruptors and the thyroid gland--a combined in vitro and in vivo analysis of potential new biomarkers. Environ Health Perspect. 2007 Dec;115 Suppl 1(Suppl 1):77-83.  [Content Brief]

  [3]. Ka Y, et al. Waterborne exposure to avobenzone and octinoxate induces thyroid endocrine disruption in wild-type and thrαa-/- zebrafish larvae[J]. Ecotoxicology. 2022 Aug;31(6):948-955.  [Content Brief]

  [4]. Phelan-Dickinson SJ, et al. The UVR Filter Octinoxate Modulates Aryl Hydrocarbon Receptor Signaling in Keratinocytes via Inhibition of CYP1A1 and CYP1B1[J]. Toxicol Sci. 2020 Sep 1;177(1):188-201.  [Content Brief]

  [5]. Chang KY, et al. Organic ultraviolet filters regulate hyaluronan metabolism in human epidermal keratinocytes through the phosphatidylinositol 3-kinase pathway[J]. Toxicol In Vitro. 2023 Feb;86:105511.  [Content Brief]