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4-Methylumbelliferone

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4-Methylumbelliferone molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 3 grades and pack sizes of 4-Methylumbelliferone (CAS 90-33-5). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS90-33-5
Molecular formulaC10H8O3
Molecular weight176.17 g/mol
IUPAC name7-hydroxy-4-methylchromen-2-one
SynonymsHymecromone · 7-Hydroxy-4-methyl-2H-chromen-2-one · Imecromone · Cantabiline · Crodimon · Cholonerton
Safety & Hazards (GHS) Warning
Irritant Irritant
  • H315 Causes skin irritation
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma 4-METHYLUMBELLIFERONE, >=98% M1381-100G
M1381-25G		 Request Quote
Sigma HYMECROMONE Y0000011 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.