PURPURIN

General description

Purpurin (1, 2, 4-trihydroxyanthraquinone) is the key pigment present in the roots of Indian madder (Rubia cordifolia). This pigment produces colors, with distinctive heat and light resistant properties.

Application

Nuclear stain in histology

Molecular Weight: 256.21. Empirical Formula: C₁₄H₈O₅. Assay: >. 70-85% (HPLC). form: powder. composition: Dye content, 90% . impurities: 1-3% DMF. mp: 253-256 . °C (lit.). solubility: NH₄OH: 1 . mg/mL, clear to turbid. λ. _max: 515 nm, 521 nm (2nd). application(s): diagnostic assay manufacturing
hematology
histology. storage temp.: room temp. SMILES string: Oc1cc(O)c2C(: O)c3ccccc3C(: O)c2c1O. InChI: 1S/C14H8O5/c15-8-5-9(16)14(19)11-10(8)12(17)6-3-1-2-4-7(6)13(11)18/h1-5,15-16,19H. InChI key: BBNQQADTFFCFGB-UHFFFAOYSA-N. Pictograms: GHS07. Signal Word: Warning. Hazard Statements: H315 - H319 - H335. Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338. Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3. Target Organs: Respiratory system. Storage Class Code: 11 - Combustible Solids. WGK: WGK 3. Flash Point(F): 235.4 °F - closed cup. Flash Point(C): 113 °C - closed cup. Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves.