Methylcoumarin Explained

Methylcoumarin is one of a series of isomers in which a methyl group substitutes for a hydrogen atom in coumarin. They all have formula C₁₀H₈O₂ and molecular weight 160.172 g/mol.

name	derivatives	melting	boiling pt	CAS No	PubChem	EINECS	SMILES	pic
3-Methylcoumarin				2445-82-1	17130	219-498-8	CC1=CC2=CC=CC=C2OC1=O		^[1]
4-Methylcoumarin	7-Amino-4-methylcoumarin Hymecromone			607-71-6	11833	210-141-1	CC1=CC(=O)OC2=CC=CC=C12		^[2]
5-Methylcoumarin				42286-84-0	39172		CC1=C2C=CC(=O)OC2=CC=C1		^[3]
6-methylcoumarin		72-75	303	92-48-8	7092	202-158-8	CC1=CC2=C(C=C1)OC(=O)C=C2		^[4]
7-methylcoumarin		128-130		2445-83-2	17131	219-499-3	CC1=CC2=C(C=C1)C=CC(=O)O2		^[5]

Notes and References

1. Web site: 3-methylcoumarin. 16 May 2018.
2. Web site: 4-methylcoumarin. 16 May 2018.
3. Web site: 5-methylcoumarin. 16 May 2018.
4. Web site: 6-Methylcumarin. 10 May 2018. 16 May 2018. Wikipedia.
5. Web site: 7-methylcoumarin. 16 May 2018.