Description

Urushiol (15:3) is a specific alkylcatechol compound and the primary allergenic constituent found in plants of the Toxicodendron genus, such as poison ivy and poison oak. This high-purity reference standard is critical for research and development in dermatology, immunology, and toxicology. It is essential for scientists and manufacturers requiring a reliable, well-characterized compound for analytical testing, method development, and the study of contact dermatitis mechanisms. The product is supplied with full analytical documentation to ensure traceability and reproducibility in your applications.

Application

• Reference Standard for Analytical Testing: Used as a primary standard in HPLC, GC-MS, and LC-MS methods for the identification and quantification of urushiol congeners in plant extracts, environmental samples, or consumer products.
• Immunological Research: A key reagent for studying Type IV hypersensitivity reactions, T-cell activation, and the inflammatory pathways involved in allergic contact dermatitis.
• Dermatological Product Development: Employed in the efficacy testing of barrier creams, cleansers, and topical treatments designed to prevent or mitigate poison ivy/oak reactions.
• Toxicological Studies: Used to investigate the metabolism, penetration, and long-term effects of urushiol exposure in various model systems.
• Quality Control in Botanical Extracts: Serves as a marker compound for the standardization and safety assessment of herbal preparations that may contain related species.
• Material Science Research: Investigated for its unique chemical properties in specialized polymer and lacquer research, given its historical use in traditional lacquerware.

Basic Information

Product Name	Urushiol (15:3)
CAS No.	83543-37-7
Molecular Formula	C21H34O2
Molecular Weight	318.50 g/mol
Synonyms	3-(Pentadeca-8',11',14'-trienyl)catechol; 3-[(8Z,11Z,14Z)-Pentadeca-8,11,14-trien-1-yl]benzene-1,2-diol; 3-n-Pentadeca-8,11,14-trienylcatechol; 15:3 Urushiol; 1,2-Benzenediol, 3-[(8Z,11Z,14Z)-8,11,14-pentadecatrienyl]-; Urushiol C15:3
EINECS	Contact for details

Quality Control

Every batch of Urushiol (15:3) is produced and analyzed under strict quality management protocols. Our products undergo rigorous identity confirmation, purity analysis, and stability testing to ensure they meet the exacting standards required for research and development. A comprehensive Certificate of Analysis (COA) detailing purity, chromatographic data, and storage recommendations is provided with each shipment to guarantee traceability and consistency for your critical work.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at -20°C or below for long-term stability. This product is easily oxidized and light-sensitive. Allow the sealed container to reach room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms to structure
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 95.0% (Area %)
Related Substances (HPLC)	Individual impurity ≤ 1.0%; Total impurities ≤ 5.0%
Water Content (KF)	≤ 0.5%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.