Umbelliferone (also known as 7-Hydroxycoumarin, Hydrangin or Skimmetin) is a natural product of the coumarin class, it is a fluorescing compound which can be used as a sunscreen agent. Umbelliferone modulates the oxidative metabolism, degranulation and microbial killing of human neutrophils. Umbelliferone acts on neutrophils to produce relevant anti-inflammatory effects

Physicochemical Properties

Molecular Formula	C9H6O3
Molecular Weight	162.1421
Exact Mass	162.031
CAS #	93-35-6
Related CAS #	Umbelliferone-d5;1215373-23-1
PubChem CID	5281426
Appearance	Light yellow to brown solid powder
Density	1.4±0.1 g/cm3
Boiling Point	382.1±37.0 °C at 760 mmHg
Melting Point	230 °C (dec.)(lit.)
Flash Point	181.2±19.3 °C
Vapour Pressure	0.0±0.9 mmHg at 25°C
Index of Refraction	1.640
LogP	1.58
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	0
Heavy Atom Count	12
Complexity	222
Defined Atom Stereocenter Count	0
InChi Key	ORHBXUUXSCNDEV-UHFFFAOYSA-N
InChi Code	InChI=1S/C9H6O3/c10-7-3-1-6-2-4-9(11)12-8(6)5-7/h1-5,10H
Chemical Name	7-Hydroxycoumarin
Synonyms	7-Hydroxycoumarin; 7-Hydroxylcoumarin; 7-Oxycoumarin; Hydrangin; Hydrangine; NSC 19790; NSC-19790; NSC19790; Skimmetin; Skimmetine; Umbelliferon;
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

ADME/Pharmacokinetics	Metabolism / Metabolites 7-Hydroxycoumarin is a known human metabolite of 7-ethoxycoumarin, 7-methoxycoumarin, and coumarin.
References	[1]. Umbelliferone exhibits anticancer activity via the induction of apoptosis and cell cycle arrest in HepG2 hepatocellular carcinoma cells. Mol Med Rep. 2015 Sep;12(3):3869-3873.
Additional Infomation	Umbelliferone is a hydroxycoumarin that is coumarin substituted by a hydroxy group ay position 7. It has a role as a fluorescent probe, a plant metabolite and a food component. Umbelliferone has been reported in Hydrangea serrata, Caragana frutex, and other organisms with data available. See also: Chamomile (part of).

Solubility Data

Solubility (In Vitro)

DMSO : ≥ 14.29 mg/mL (~88.13 mM) H2O : < 0.1 mg/mL

Solubility (In Vivo)

Solubility in Formulation 1: 1.43 mg/mL (8.82 mM) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 14.3 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 1.43 mg/mL (8.82 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 14.3 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	6.1675 mL	30.8375 mL	61.6751 mL
	5 mM	1.2335 mL	6.1675 mL	12.3350 mL
	10 mM	0.6168 mL	3.0838 mL	6.1675 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.