Lactones

Alfa Aesar™ Gibberellic acid, 98%

CAS: 77-06-5 Molecular Formula: C19H22O6 Molecular Weight (g/mol): 346.379 MDL Number: MFCD00079329 InChI Key: IXORZMNAPKEEDV-MOBSEVHISA-N Synonym: brellin, cekugib, gib-tabs, gibberellic acid, gibberellic acid ga3, gibberellin, gibberellin a3, gibberellin x, gibreskol, grocel PubChem CID: 91757643 SMILES: CC12C(C=CC3(C1C(C45C3CCC(C4)(C(=C)C5)O)C(=O)O)OC2=O)O

D(-)-Pantolactone, 99%, ACROS Organics™

CAS: 599-04-2 Molecular Formula: C6H10O3 Molecular Weight (g/mol): 130.14 MDL Number: MFCD00005392 InChI Key: SERHXTVXHNVDKA-BYPYZUCNSA-N Synonym: 2 3h-furanone, dihydro-3-hydroxy-4,4-dimethyl-, 3r, d---pantolactone, d---pantoyl lactone, d-pantolactone, pantothenic lactone, r---pantolactone, r-3-hydroxy-4,4-dimethyldihydrofuran-2 3h-one, r-pantolactone, r-pantoyl lactone, unii-j288d7o0js PubChem CID: 439368 ChEBI: CHEBI:16719 IUPAC Name: (3R)-3-hydroxy-4,4-dimethyloxolan-2-one SMILES: CC1(COC(=O)C1O)C

beta-Propiolactone, 97%, Alfa Aesar™

CAS: 57-57-8 Molecular Formula: C3H4O2 Molecular Weight (g/mol): 72.063 MDL Number: MFCD00005169 InChI Key: VEZXCJBBBCKRPI-UHFFFAOYSA-N Synonym: 1,3-propiolactone, 2-oxetanone, 3-propanolide, 3-propiolactone, beta-propiolactone, beta-propiolakton, beta-propionolactone, betaprone, propanolide, propiolactone PubChem CID: 2365 ChEBI: CHEBI:49073 IUPAC Name: oxetan-2-one SMILES: C1COC1=O

Lovastatin, 98%, ACROS Organics™

CAS: 75330-75-5 Molecular Formula: C24H36O5 Molecular Weight (g/mol): 404.54 InChI Key: PCZOHLXUXFIOCF-BXMDZJJMSA-N Synonym: 6alpha-methylcompactin, altoprev, lovalip, lovalord, lovastatin, mevacor, mevinacor, mevinolin, monacolin k, nergadan PubChem CID: 53232 ChEBI: CHEBI:40303 IUPAC Name: [(1S,3R,7S,8S,8aR)-8-[2-[(2R,4R)-4-hydroxy-6-oxooxan-2-yl]ethyl]-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl] (2S)-2-methylbutanoate SMILES: CCC(C)C(=O)OC1CC(C=C2C1C(C(C=C2)C)CCC3CC(CC(=O)O3)O)C

Simvastatin, 98%, ACROS Organics™

CAS: 79902-63-9 Molecular Formula: C25H38O5 Molecular Weight (g/mol): 418.57 InChI Key: RYMZZMVNJRMUDD-HGQWONQESA-N Synonym: denan, lipex, lodales, simvastatin, simvastatina, simvastatine, sinvacor, sivastin, synvinolin, zocor PubChem CID: 54454 ChEBI: CHEBI:9150 IUPAC Name: [(1S,3R,7S,8S,8aR)-8-[2-[(2R,4R)-4-hydroxy-6-oxooxan-2-yl]ethyl]-3,7-dimethyl-1,2,3,7,8,8a-hexahydronaphthalen-1-yl] 2,2-dimethylbutanoate SMILES: CCC(C)(C)C(=O)OC1CC(C=C2C1C(C(C=C2)C)CCC3CC(CC(=O)O3)O)C

Gibberellin A3 98.0+%, TCI America™

CAS: 77-06-5 Molecular Formula: C19H22O6 Molecular Weight (g/mol): 346.379 MDL Number: MFCD00079329 InChI Key: IXORZMNAPKEEDV-MOBSEVHISA-N Synonym: brellin, cekugib, gib-tabs, gibberellic acid, gibberellic acid ga3, gibberellin, gibberellin a3, gibberellin x, gibreskol, grocel PubChem CID: 91757643 SMILES: CC12C(C=CC3(C1C(C45C3CCC(C4)(C(=C)C5)O)C(=O)O)OC2=O)O

Alfa Aesar™ delta-Valerolactone, 98%, may contain polymer; distil to remove

CAS: 542-28-9 Molecular Formula: C5H8O2 Molecular Weight (g/mol): 100.117 MDL Number: MFCD00006645 InChI Key: OZJPLYNZGCXSJM-UHFFFAOYSA-N Synonym: .delta.-valerolactone, .delta.-valeryllactone, 2h-pyran-2-one, tetrahydro, 5-valerolactone, delta-valerolactone, penta-1,5-lactone, tetrahydro-2-pyranone, tetrahydro-2h-pyran-2-one, tetrahydro-pyran-2-one, tetrahydropyran-2-one PubChem CID: 10953 ChEBI: CHEBI:16545 IUPAC Name: oxan-2-one SMILES: C1CCOC(=O)C1

Tetronic acid, 96%, Alfa Aesar™

CAS: 541-57-1 Molecular Formula: C4H4O3 Molecular Weight (g/mol): 100.073 MDL Number: MFCD00010086 InChI Key: JCGNDDUYTRNOFT-UHFFFAOYSA-N Synonym: 2,4 3h,5h-furandione, 2,4-furandione, 3,5-dihydrofuran-2,4-dione, beta-tetronic acid, butanoic acid, 4-hydroxy-3-oxo-, .gamma.-lactone, furan-2,4 3h,5h-dione, tetrahydrofuran-2,4-dione, tetrahydrofuran-3,5-dione, tetronic acid, tetronicacid PubChem CID: 521261 IUPAC Name: oxolane-2,4-dione SMILES: C1C(=O)COC1=O

Pilocarpine Hydrochloride 98.0+%, TCI America™

CAS: 54-71-7 Molecular Formula: C11H17ClN2O2 Molecular Weight (g/mol): 244.719 MDL Number: MFCD00012722 InChI Key: RNAICSBVACLLGM-GNAZCLTHSA-N Synonym: +-pilocarpine hydrochloride, almocarpine, pilocar, pilocar smp, pilocarpal, pilocarpine hcl, pilocarpine hydrochloride, pilocel, pilomiotin, pilovisc PubChem CID: 5909 IUPAC Name: (3S,4R)-3-ethyl-4-[(3-methylimidazol-4-yl)methyl]oxolan-2-one;hydrochloride SMILES: CCC1C(COC1=O)CC2=CN=CN2C.Cl

(S)-3-Hydroxy-gamma-butyrolactone 95.0+%, TCI America™

CAS: 7331-52-4 Molecular Formula: C4H6O3 Molecular Weight (g/mol): 102.089 MDL Number: MFCD00211247 InChI Key: FUDDLSHBRSNCBV-VKHMYHEASA-N Synonym: 2 3h-furanone, dihydro-4-hydroxy-, 4s, 4s-4-hydroxy-3,4,5-trihydrofuran-2-one, 4s-4-hydroxydihydrofuran-2 3h-one, 4s-4-hydroxyoxolan-2-one, s-3-hydroxy-gamma-butyrolactone, s-4,5-dihydro-4-hydroxy-2 3h-furanone, s-4-hydroxydihydrofuran-2 3h-one, s-4-hydroxytetrahydrofuran-2-one, s-beta-hydroxy-gamma-butyrolactone, unii-2lie7314jh PubChem CID: 7269389 IUPAC Name: (4S)-4-hydroxyoxolan-2-one SMILES: C1C(COC1=O)O

delta-Dodecanolactone 98.0+%, TCI America™

CAS: 713-95-1 Molecular Formula: C12H22O2 Molecular Weight (g/mol): 198.306 MDL Number: MFCD00006651 InChI Key: QRPLZGZHJABGRS-UHFFFAOYSA-N Synonym: 2h-pyran-2-one, 6-heptyltetrahydro, 5-dodecalactone, 5-dodecanolide, 5-hydroxydodecanoic acid lactone, 6-heptyltetrahydro-2h-pyran-2-one, delta-dodecalactone, delta-dodecanolactone, dodecan-5-olide, dodecanolide-1,5, n-heptyl-delta-valerolactone PubChem CID: 12844 IUPAC Name: 6-heptyloxan-2-one SMILES: CCCCCCCC1CCCC(=O)O1

2-Deoxy-2,2-difluoro-D-erythro-pentonic Acid gamma-Lactone 3,5-Dibenzoate 98.0+%, TCI America™

CAS: 122111-01-7 Molecular Formula: C19H14F2O6 Molecular Weight (g/mol): 376.312 MDL Number: MFCD08458308 InChI Key: SHHNEUNVMZNOID-HUUCEWRRSA-N PubChem CID: 9821015 IUPAC Name: [(2R,3R)-3-benzoyloxy-4,4-difluoro-5-oxooxolan-2-yl]methyl benzoate SMILES: C1=CC=C(C=C1)C(=O)OCC2C(C(C(=O)O2)(F)F)OC(=O)C3=CC=CC=C3

L-(+)-Gulonic Acid gamma-Lactone 98.0+%, TCI America™

CAS: 1128-23-0 Molecular Formula: C6H10O6 Molecular Weight (g/mol): 178.14 MDL Number: MFCD00064331 InChI Key: SXZYCXMUPBBULW-SKNVOMKLSA-N Synonym: 3s,4r,5r-5-s-1,2-dihydroxyethyl-3,4-dihydroxydihydrofuran-2 3h-one, gamma-gulonolactone, l +-gulonic acid gamma-lactone, l-+-gulonic acid gamma-lactone, l-+-gulono-1,4-lactone, l-gulonic acid gamma-lactone, l-gulonic gamma-lactone, l-gulono-1,4-lactone, l-gulono-gamma-lactone, l-gulonolactone PubChem CID: 439373 ChEBI: CHEBI:17587 IUPAC Name: (3S,4R,5R)-5-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-one SMILES: C(C(C1C(C(C(=O)O1)O)O)O)O

1,1-Cyclopentanediacetic Anhydride 98.0+%, TCI America™

CAS: 5662-95-3 Molecular Formula: C9H12O3 Molecular Weight (g/mol): 168.192 MDL Number: MFCD00006678 InChI Key: GFWLMILMVMCJDI-UHFFFAOYSA-N Synonym: .beta.,.beta.-tetramethyleneglutaric anhydride, 1,1-cyclopentane-diacetic anhydride, 1,1-cyclopentanediacetic anhydride, 1,1-cyclopentanediaceticanhydride, 3,3-tetramethyleneglutaric anhydride, 8-oxaspiro 4.5 decan-7,9-dione, 8-oxaspiro 4.5 decane-7,9-dione, 8-oxaspiro 4.5-7,9-decanedione, acmc-209ltw, cyclopentane-1,1-diacetic anhydride PubChem CID: 79743 IUPAC Name: 8-oxaspiro[4.5]decane-7,9-dione SMILES: C1CCC2(C1)CC(=O)OC(=O)C2

gamma-Methyl-gamma-decanolactone 98.0+%, TCI America™

CAS: 7011-83-8 Molecular Formula: C11H20O2 Molecular Weight (g/mol): 184.279 MDL Number: MFCD00036642 InChI Key: ALWUKGXLBSQSMA-UHFFFAOYSA-N Synonym: gamma-Methyl-gamma-decalactone PubChem CID: 285097 IUPAC Name: 5-hexyl-5-methyloxolan-2-one SMILES: CCCCCCC1(CCC(=O)O1)C

gamma-Dodecanolactone 97.0+%, TCI America™

CAS: 2305-05-7 Molecular Formula: C12H22O2 Molecular Weight (g/mol): 198.31 MDL Number: MFCD00036499 InChI Key: WGPCZPLRVAWXPW-UHFFFAOYNA-N Synonym: gamma-Dodecalactone, gamma-Laurolactone PubChem CID: 16821 IUPAC Name: 5-octyloxolan-2-one SMILES: CCCCCCCCC1CCC(=O)O1

γ-Undecalactone, 98%, ACROS Organics™

CAS: 104-67-6 Molecular Formula: C11H20O2 Molecular Weight (g/mol): 184.28 MDL Number: MFCD00005405 InChI Key: PHXATPHONSXBIL-UHFFFAOYSA-N Synonym: 1,4-undecanolide, 2 3h-furanone, 5-heptyldihydro, 4-undecanolide, 5-heptyldihydrofuran-2 3h-one, aldehyde c-14 peach, gamma-undecalactone, gamma-undecanolactone, peach aldehyde, peach lactone, persicol PubChem CID: 7714 IUPAC Name: 5-heptyloxolan-2-one SMILES: CCCCCCCC1CCC(=O)O1

3-Chloro-2,4(3H,5H)-furandione 98.0+%, TCI America™

CAS: 4971-55-5 Molecular Formula: C4H3ClO3 Molecular Weight (g/mol): 134.515 MDL Number: MFCD00134273 InChI Key: DJEJYZZJYYNADA-UHFFFAOYSA-N Synonym: 2,4 3h,5h-furandione, 3-chloro, 3-chloranyloxolane-2,4-dione, 3-chloro-2,4 3h,5h-furandione, 3-chloro-3,5-dihydrofuran-2,4-dione, 3-chloro-furan-2,4-dione, 3-chlorofuran-2,4 3h,5h-dione, 3-chlorofuran-2,4-dione, 3-chlorotetrahydrofuran-2,4-dione, 3-chlorotetronic acid, acmc-209khp PubChem CID: 4158575 IUPAC Name: 3-chlorooxolane-2,4-dione SMILES: C1C(=O)C(C(=O)O1)Cl

γ-Valerolactone, 98%, ACROS Organics™

CAS: 108-29-2 Molecular Formula: C5H8O2 Molecular Weight (g/mol): 100.12 MDL Number: MFCD00005400 InChI Key: GAEKPEKOJKCEMS-UHFFFAOYSA-N Synonym: 2 3h-furanone, dihydro-5-methyl, 4-hydroxypentanoic acid lactone, 4-hydroxyvaleric acid lactone, 4-methyl-gamma-butyrolactone, 4-pentanolide, 4-valerolactone, 5-methyldihydrofuran-2 3h-one, gamma-pentalactone, gamma-valerolactone, pentanolide-1,4 PubChem CID: 7921 ChEBI: CHEBI:48569 IUPAC Name: 5-methyloxolan-2-one SMILES: CC1CCC(=O)O1

Alfa Aesar™ Gibberellic acid, 90+%

CAS: 77-06-5 Molecular Formula: C19H22O6 Molecular Weight (g/mol): 346.379 MDL Number: MFCD00079329 InChI Key: IXORZMNAPKEEDV-MOBSEVHISA-N Synonym: brellin, cekugib, gib-tabs, gibberellic acid, gibberellic acid ga3, gibberellin, gibberellin a3, gibberellin x, gibreskol, grocel PubChem CID: 91757643 SMILES: CC12C(C=CC3(C1C(C45C3CCC(C4)(C(=C)C5)O)C(=O)O)OC2=O)O

Alfa Aesar™ (1S)-(-)-Camphanic chloride, 95%

CAS: 39637-74-6 Molecular Formula: C10H13ClO3 Molecular Weight (g/mol): 216.661 MDL Number: MFCD00135626 InChI Key: PAXWODJTHKJQDZ-QVDQXJPCSA-N Synonym: --1s,4r-camphanoyl chloride, 1s---camphanic acid chloride, 1s-4,7,7-trimethyl-3-oxo-2-oxabicyclo 2.2.1 heptane-1-carbonyl chloride PubChem CID: 12364938 IUPAC Name: (4S)-1,7,7-trimethyl-2-oxo-3-oxabicyclo[2.2.1]heptane-4-carbonyl chloride SMILES: CC1(C2(CCC1(OC2=O)C(=O)Cl)C)C

Alfa Aesar™ delta-Hexanolactone, 98%

CAS: 823-22-3 Molecular Formula: C6H10O2 Molecular Weight (g/mol): 114.144 MDL Number: MFCD00083574 InChI Key: RZTOWFMDBDPERY-UHFFFAOYSA-N Synonym: .delta.-caprolactone, 2h-pyran-2-one, tetrahydro-6-methyl, 5-hydroxyhexanoic acid lactone, 5-methyl-delta-valerolactone, 6-methylvalerolactone, delta-caprolactone, delta-hexalactone, delta-hexanolactone, hexanolactone, tetrahydro-6-methyl-2h-pyran-2-one PubChem CID: 13204 IUPAC Name: 6-methyloxan-2-one SMILES: CC1CCCC(=O)O1

Alfa Aesar™ 2,3-O-Isopropylidene-D-ribonic acid-1,4-lactone, 97+%

CAS: 30725-00-9 Molecular Formula: C8H12O5 Molecular Weight (g/mol): 188.179 MDL Number: MFCD00080793 InChI Key: NHHKFJCWLPPNCN-HSUXUTPPSA-N Synonym: 2,3-isopropylidene-d-ribonolactone, 2,3-o-isopropylidene-d-ribonic, 2,3-o-isopropylidene-d-ribonic gamma-lactone, 2,3-o-isopropylidene-d-ribonic-gama-lactone, 2,3-o-isopropylidene-d-ribono-1,4-lactone, 3ar,6r,6ar-6-hydroxymethyl-2,2-dimethyl-dihydro-3ah-furo 3,4-d 1,3 dioxol-4-one, 3ar,6r,6ar-6-hydroxymethyl-2,2-dimethyldihydrofuro 3,4-d 1,3 dioxol-4 3ah-one, a-lactone, d-2,3-isopropylidene lyxono-1,4-lactone, nhhkfjcwlppncn-hsuxutppsa, pubchem10728 PubChem CID: 1268067 IUPAC Name: (3aR,6R,6aR)-6-(hydroxymethyl)-2,2-dimethyl-6,6a-dihydro-3aH-furo[3,4-d][1,3]dioxol-4-one SMILES: CC1(OC2C(OC(=O)C2O1)CO)C

(R)-(+)-alpha-Hydroxy-gamma-butyrolactone 98.0+%, TCI America™

CAS: 56881-90-4 Molecular Formula: C4H6O3 Molecular Weight (g/mol): 102.089 MDL Number: MFCD00211246 InChI Key: FWIBCWKHNZBDLS-GSVOUGTGSA-N Synonym: (R)-(+)-Dihydro-3-hydroxy-2(3H)-furanone, (R)-(+)-3-Hydroxytetrahydrofuran-2-one PubChem CID: 7157070 IUPAC Name: (3R)-3-hydroxyoxolan-2-one SMILES: C1COC(=O)C1O

alpha-Methylene-gamma-butyrolactone (stabilized with 2,6-Di-tert-butyl-p-cresol) 95.0+%, TCI America™

CAS: 547-65-9 Molecular Formula: C5H6O2 Molecular Weight (g/mol): 98.101 MDL Number: MFCD00005407 InChI Key: GSLDEZOOOSBFGP-UHFFFAOYSA-N Synonym: 2 3h-furanone, dihydro-3-methylene, 2-methylenebutyrolactone, 3-methylenedihydro-2 3h-furanone, 3-methylenedihydrofuran-2 3h-one, alpha-methylene butyrolactone, alpha-methylene gamma-butyrolactone, alpha-methylene-gamma-butyrolactone, dihydro-3-methylene-2 3h-furanone, tulipalin a, tulipane PubChem CID: 68352 ChEBI: CHEBI:104120 IUPAC Name: 3-methylideneoxolan-2-one SMILES: C=C1CCOC1=O

(-)-Corey Lactone Benzoate 98.0+%, TCI America™

CAS: 39746-00-4 Molecular Formula: C15H16O5 Molecular Weight (g/mol): 276.288 MDL Number: MFCD00674102 InChI Key: OBRRYUZUDKVCOO-FVCCEPFGSA-N Synonym: --corey lactone benzoate, 1s,5r,6s,7r-7-benzoyloxy-6-hydroxymethyl-2-oxabicyclo 3.3.0 octan-3-one, 3ar,4s,5r,6as-4-hydroxymethyl-2-oxo-3,3a,4,5,6,6a-hexahydrocyclopenta b furan-5-yl benzoate, 3ar,4s,5r,6as-4-hydroxymethyl-2-oxo-hexahydrocyclopenta b furan-5-yl benzoate, 3ar,4s,5r,6as-4-hydroxymethyl-2-oxohexahydro-2h-cyclopenta b furan-5-yl benzoate, 3ar,4s,5r,6as-5-benzoyloxy hexahydro-4-hydroxymethyl-2h-cyclopenta b furan-2-one, 3ar,4s,5r,6as-5-benzoyloxy hexahydro-4-hydroxymethyl-2h-cyclopentafuran-2-one, benzoyl-corey lactone, corey lactone benzoate, pubchem19127 PubChem CID: 2724454 IUPAC Name: [(3aR,4S,5R,6aS)-4-(hydroxymethyl)-2-oxo-3,3a,4,5,6,6a-hexahydrocyclopenta[b]furan-5-yl] benzoate SMILES: C1C2C(CC(=O)O2)C(C1OC(=O)C3=CC=CC=C3)CO

6,6-Dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione, 98%, Alfa Aesar™

CAS: 67911-21-1 Molecular Formula: C7H8O3 Molecular Weight (g/mol): 140.138 MDL Number: MFCD09751198 InChI Key: QKAHKEDLPBJLFD-UHFFFAOYSA-N Synonym: 2r,4r-methyl 4-hydroxypyrrolidine-2-carboxylate hydrochloride form, 3,3-dimethyl-1,2-cyclopropane dicarboxylic anhydride, 3,3-dimethyl-1,2-cyclopropanedicarboxylic acid anhydride, 3,3-dimethyl-1,2-cyclopropanedicarboxylic anhydride, 3-oxabicyclo 3.1.0 hexane-2,4-dione, 6,6-dimethyl, 3-oxabicyclo 3.1.0 hexane-2,4-dione,6,6-dimethyl, 6,6-dimethyl-3-oxabicyclo 3.1.0 hex-2,4-dione, 6,6-dimethyl-3-oxabicyclo 3.1.0 hexane-2,4-dione, caronic anhydride, ksc626s3r PubChem CID: 10374536 IUPAC Name: 6,6-dimethyl-3-oxabicyclo[3.1.0]hexane-2,4-dione SMILES: CC1(C2C1C(=O)OC2=O)C

DL-Pantolactone 95.0+%, TCI America™

CAS: 79-50-5 Molecular Formula: C6H10O3 Molecular Weight (g/mol): 130.143 MDL Number: MFCD00064333 InChI Key: SERHXTVXHNVDKA-UHFFFAOYSA-N Synonym: 2 3h-furanone, dihydro-3-hydroxy-4,4-dimethyl, 3-hydroxy-4,4-dimethyldihydrofuran-2 3h-one, d---pantolactone, dihydro-3-hydroxy-4,4-dimethyl-2 3h-furanone, dl-pantolactone, dl-pantoyl lactone, pantoic lactone, pantolactone, pantolyl lactone, pantoyl lactone PubChem CID: 989 IUPAC Name: 3-hydroxy-4,4-dimethyloxolan-2-one SMILES: CC1(COC(=O)C1O)C

Alfa Aesar™ L-(+)-Pantolactone, 98%

CAS: 5405-40-3 Molecular Formula: C6H10O3 Molecular Weight (g/mol): 130.143 MDL Number: MFCD00216625 InChI Key: SERHXTVXHNVDKA-SCSAIBSYSA-N Synonym: 2 3h-furanone, dihydro-3-hydroxy-4,4-dimethyl-, 3s, 3s-3-hydroxy-4,4-dimethyloxolan-2-one, d---pantolactone, l-+-pantoyl lactone, l-pantolactone, l-pantoyl lactone, pantolactons, s-+-pantolactone, s-3-hydroxy-4,4-dimethyldihydrofuran-2 3h-one, s-pantolactone PubChem CID: 736053 IUPAC Name: (3S)-3-hydroxy-4,4-dimethyloxolan-2-one SMILES: CC1(COC(=O)C1O)C

alpha,alpha-Dimethyl-gamma-butyrolactone 97.0+%, TCI America™

CAS: 3709-08-8 Molecular Formula: C6H10O2 Molecular Weight (g/mol): 114.14 MDL Number: MFCD03844788 InChI Key: UPVAIJPDWVTFKT-UHFFFAOYSA-N Synonym: Dihydro-3,3-dimethyl-2(3H)-furanone PubChem CID: 94746 IUPAC Name: 3,3-dimethyloxolan-2-one SMILES: CC1(CCOC1=O)C

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