The compound (-)-Epigallocatechin gallate, with a molecular formula of C22H18O11 and a molecular weight of 458.4, is categorized as an other reference substance for high-performance liquid chromatography (HPLC). This phytochemical falls under the broader category of natural and reference materials, specifically within the group of reference substances for HPLC/TLC/GC. Its structure, as defined by IUPAC, is complex, involving multiple rings and ester bonds. Due to its flammable nature, appropriate safety measures should be taken when handling this substance, as indicated by the GHS signal word "Danger.

• CAS Number: 989-51-5
• Molecular Formula: C22H18O11
• Molecular Weight: 458.4
• Exact Mass: 458.08491139
• GHS Signal Word: Danger
• Hazard Statements:
• H225 (77.8%): Highly Flammable liquid and vapor [Danger Flammable liquids]