Check the listing for details. 4-Methylumbelliferone, Certified® Reagent. Condition: New. Listed at 49.12 USD. 4-Methylumbelliferone, Certified® Reagent Certified Reagent for Research & Developmen Not intended for animal or human diagnostic or therapeutic use Don’t see what you’re looking for? Give us the opportunity to make it happen! Certificate of Analysis and Material Safety Data Sheets Available Upon Request Assay Current stock: 2019867CR-0622-CL Appearance off-white crystalline powder; Assay (HPLC) 99.45%; Fluorescence (in ethanol) λex 372nm; λem 445nm; Identification (1H NMR) conforms; Residue after ignition 0.1%; Beilstein Number 142217 Boiling Point 267.7°C CAS Number 90-33-5 Density 1.1958 EINES Number 201-986-7 Flash Point 174.5°C Harmonized Code 2932.20.4500 IUPAC Name 7-Hydroxy-4-methylchromen-2-one Linear Formula C10H8O3 MDL Number MFCD00006866 Melting Point 188.5-190°C Molecular Formula C10H8O3 Molecular Weight 176.17 Refractive Index 1.5036