:Methylenolactocin

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| ImageFile = (-)-Methylenolactocin.svg

| ImageSize = 200px

| IUPACName = (2S,3R)-4-Methylidene-5-oxo-2-pentyloxolane-3-carboxylic acid

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|Section1={{Chembox Identifiers

| CASNo = 112923-53-2

| CASNo_Ref = {{Cascite|correct|CAS}}

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = 6A2EXC8CNC

| ChemSpiderID = 118131

| DTXSID = DTXSID40920955

| PubChem = 133968

| SMILES = CCCCC[C@H]1[C@@H](C(=C)C(=O)O1)C(=O)O

| StdInChI=1S/C11H16O4/c1-3-4-5-6-8-9(10(12)13)7(2)11(14)15-8/h8-9H,2-6H2,1H3,(H,12,13)/t8-,9+/m0/s1

| StdInChIKey = YZCRACGZKLIGLZ-DTWKUNHWSA-N

}}

|Section2={{Chembox Properties

| C=11 | H=16 | O=4

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|Section3={{Chembox Hazards

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Methylenolactocin is a chemical compound that has been isolated from Penicillium. It has weak activity in an animal model of Ehrlich carcinoma.{{cite journal |pmid=3403369 |year=1988 |last1=Park |first1=BK |last2=Nakagawa |first2=M |last3=Hirota |first3=A |last4=Nakayama |first4=M |title=Methylenolactocin, a novel antitumor antibiotic from Penicillium sp |volume=41 |issue=6 |pages=751–8 |journal=The Journal of Antibiotics |doi=10.7164/antibiotics.41.751 |doi-access=free}}