• Name

  4-Methylumbelliferone

• EINECS 201-986-7
• CAS No. 90-33-5
• Article Data217
• CAS DataBase
• Density 1.319 g/cm³
• Solubility slightly soluble in water
• Melting Point 188.5-190 °C(lit.)
• Formula C₁₀H₈O₃
• Boiling Point 377.4 °C at 760 mmHg
• Molecular Weight 176.18
• Flash Point 174.5 °C
• Transport Information
• Appearance off-white to yellow crystals
• Safety 26-37/39-36
• Risk Codes 36/37/38-20/21/22
• Molecular Structure
• Hazard Symbols Xi,Xn
• Synonyms Coumarin,7-hydroxy-4-methyl- (8CI);Umbelliferone, 4-methyl- (6CI);4-MU;4-Methyl-7-hydroxycoumarin;7-Hydroxy-4-methyl-2-chromenone;7-Hydroxy-4-methyl-2-oxo-3-chromene;7-Hydroxy-4-methyl-2H-1-benzopyran-2-one;7-Hydroxy-4-methyl-2H-chromen-2-one;7-Hydroxy-4-methylcoumarin;Bilcolic;Bilicante;Biliton H;Cantabilin;Cantabiline;Cholestil;Cholonerton;Cholspasmin;Coumarin 4;Cumarote C;Eurogale;Hymecromone;Imecromone;Medilla;Mendiaxon;NSC 9408;Omega127;Pilot 447;
• PSA 50.44000
• LogP 1.80700

4-Methylumbelliferone Chemical Properties

7-Hydroxy-4-methylcoumarin(90-33-5), also called 4-Methylumbelliferone, exists as off-white to yellow crystals. 7-Hydroxy-4-methylcoumarin(90-33-5) is slightly soluble in water.
Molecular Structure:
Molecular Formula: C₁₀H₈O₃.
Molecular Weight: 176.17.
Melting Point: 188.5-190 ℃(lit.)

4-Methylumbelliferone Uses

4-Methylumbelliferone Toxicity Data With Reference

4-Methylumbelliferone Safety Profile

Irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-20/21/22
36/37/38:  Irritating to eyes, respiratory system and skin
20/21/22:  Harmful by inhalation, in contact with skin and if swallowed 
Safety Statements: 26-37/39-36
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
37/39:  Wear suitable gloves and eye/face protection 
36:  Wear suitable protective clothing 
WGK Germany: 2
RTECS: GN7000000
Hazard Note: Irritant