4-Methylumbelliferone

Also known as: 7-Hydroxy-4-methylcoumarin, Hymecromone, 4-MU, 7-Hydroxy-4-methyl-2H-chromen-2-one, 2H-1-Benzopyran-2-one, 7-hydroxy-4-methyl-, 7-hydroxy-4-methyl-2H-1-benzopyran-2-one, BMU, Bilcolic, Medilla, Crodimon, Eurogale, Himecol, LM 94

4-Methylumbelliferone (CAS 90-33-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H8O3 and a molecular weight of 176.16900 g/mol. Key properties include a melting point of 188.5-190 °C(lit.), a boiling point of 377.4ºC at 760 mmHg, a density of 1.319 g/cm3 and a flash point of 174.5ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 90-33-5
Jingsj CID: J-1325300-4
Molecular Formula: C₁₀H₈O₃
Molecular Weight: 176.16900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	188.5-190 °C(lit.)
Boiling Point	377.4ºC at 760 mmHg
Density	1.319 g/cm3
Flash Point	174.5ºC
Exact Mass	176.04700
PSA	50.44000
LogP	1.80700
Stability	Stable. Combustible. Incompatible with strong oxidizing agents.
Additional Property	slightly soluble

Activity & Biological Data

Target	hyaluronic acid[1]
Additional Information	[1]. García-Vilas JA, et al. 4-methylumbelliferone inhibits angiogenesis in vitro and in vivo. J Agric Food Chem. 2013 May 1;61(17):4063-71.

Frequently Asked Questions

What is the CAS number of 4-Methylumbelliferone?

The CAS number of 4-Methylumbelliferone is 90-33-5.

What are the molecular formula and molecular weight of 4-Methylumbelliferone?

4-Methylumbelliferone has molecular formula C10H8O3 and molecular weight 176.16900 g/mol.

What are the upstream and downstream products of 4-Methylumbelliferone?

For 4-Methylumbelliferone, Upstream Products: Resorcinol, Ethyl acetoacetate, Phenylacetylene; Downstream Products: 4-Methylumbelliferyl-2-acetamido-2-deoxy-β-D-glucopyranoside, 2,6-dimethoxybenzaldehyde, 4-Methylumbelliferyl α-D-galactopyranoside.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "4-Methylumbelliferone (CAS 90-33-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1325300-4 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.