Boronic acid derivatives

Phenylboronic acid, 98+%, may contain varying amounts of anhydride, Acros Organics

CAS: 98-80-6 Molecular Formula: C6H7BO2 Molecular Weight (g/mol): 121.93 InChI Key: HXITXNWTGFUOAU-UHFFFAOYSA-N Synonym: benzeneboronic acid, boronic acid, phenyl, phenyl boronic acid, phenylboric acid, dihydroxyphenylborane, phenyldihydroxyborane, dihydroxy phenyl borane, phenylboronicacid, borophenylic acid, usaf bo-2 PubChem CID: 66827 ChEBI: CHEBI:44923 IUPAC Name: phenylboronic acid SMILES: B(C1=CC=CC=C1)(O)O

3-Aminophenylboronic acid hemisulfate, 98%, ACROS Organics™

CAS: 66472-86-4 Molecular Formula: 0·5 H2O4S Molecular Weight (g/mol): 185.99 MDL Number: MFCD00013111 InChI Key: UKTAURVTSWDIQR-UHFFFAOYSA-N Synonym: 3-aminophenyl boronic acid sulfate 2:1, 3-aminobenzeneboronic acid hemisulfate salt, 3-aminophenylboronic acid hemisulfate, 3-aminobenzeneboronic acid hemisulfate, 3-aminophenylboronic acid hemisulphate, 4-aminophenylboronic acid hemisulfate, m-aminophenyl boronic acid, hemisulphate, boronic acid, 3-aminophenyl-, sulfate 2:1, 3-aminophenyl boronic acid; sulfuric acid, bis m-aminophenylboronic acid ; sulfuric acid PubChem CID: 16211139 IUPAC Name: (3-aminophenyl)boronic acid;sulfuric acid SMILES: B(C1=CC(=CC=C1)N)(O)O.B(C1=CC(=CC=C1)N)(O)O.OS(=O)(=O)O

Alfa Aesar™ 3,4,5-Trimethoxybenzeneboronic acid, 98%

CAS: 182163-96-8 Molecular Formula: C9H13BO5 Molecular Weight (g/mol): 212.008 MDL Number: MFCD01075676 InChI Key: RULQUTYJXDLRFL-UHFFFAOYSA-N Synonym: 3,4,5-trimethoxybenzeneboronic acid, 3,4,5-trimethoxyphenyl boronic acid, 3,4,5-trimethoxyphenyl boranediol, 3,4,5-trimethoxylphenylboronic acid, boronic acid, 3,4,5-trimethoxyphenyl, pubchem7894, acmc-1c5iu, ksc174i9j, 3,4,5-trimethoxy phenylboronic acid PubChem CID: 2734390 IUPAC Name: (3,4,5-trimethoxyphenyl)boronic acid SMILES: B(C1=CC(=C(C(=C1)OC)OC)OC)(O)O

4-Methoxyphenylboronic acid, 97%, ACROS Organics™

CAS: 5720-07-0 Molecular Formula: C7H9BO3 Molecular Weight (g/mol): 151.96 MDL Number: MFCD00039139 InChI Key: VOAAEKKFGLPLLU-UHFFFAOYSA-N Synonym: 4-methoxyphenyl boronic acid, 4-methoxybenzeneboronic acid, p-anisylboronic acid, p-methoxyphenylboronic acid, p-methoxybenzeneboronic acid, 4-methoxyphenyl boranediol, benzeneboronic acid, p-methoxy, 4-boronoanisole, 4-methoxyphenylboronicacid PubChem CID: 201262 IUPAC Name: (4-methoxyphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)OC)(O)O

4-Carboxyphenylboronic acid, 97%, ACROS Organics™

CAS: 14047-29-1 Molecular Formula: C7H7BO4 Molecular Weight (g/mol): 165.94 MDL Number: MFCD00151801 InChI Key: SIAVMDKGVRXFAX-UHFFFAOYSA-N Synonym: 4-carboxyphenylboronic acid, 4-carboxybenzeneboronic acid, 4-dihydroxyboranyl benzoic acid, benzoic acid, 4-borono, 4-dihydroxyboryl benzoic acid, p-carboxyphenylboronic acid, 4-phenylester boronic acid, 4-carboxyphenyl boronic acid, chembl82324 PubChem CID: 312183 IUPAC Name: 4-boronobenzoic acid SMILES: B(C1=CC=C(C=C1)C(=O)O)(O)O

Alfa Aesar™ 5-Fluoro-2-methoxybenzeneboronic acid, 98%

CAS: 179897-94-0 Molecular Formula: C7H8BFO3 Molecular Weight (g/mol): 169.946 MDL Number: MFCD01863526 InChI Key: CCQKIRUMTHHPSX-UHFFFAOYSA-N Synonym: 5-fluoro-2-methoxyphenyl boronic acid, 2-methoxy-5-fluorophenylboronic acid, 5-fluoro-2-methoxybenzeneboronic acid, 2-methoxy-5-fluorobenzeneboronic acid, 5-fluoro-2-methoxyphenylboronicacid, 2-borono-4-fluoroanisole, 3-fluoro-6-methoxybenzeneboronic acid, 5-fluoro-2-methoxyphenyl boranediol, 4-fluoroanisole-2-boronic acid, boronic acid, 5-fluoro-2-methoxyphenyl PubChem CID: 2782673 IUPAC Name: (5-fluoro-2-methoxyphenyl)boronic acid SMILES: B(C1=C(C=CC(=C1)F)OC)(O)O

Alfa Aesar™ 4-n-Pentyloxybenzeneboronic acid, 96%

CAS: 146449-90-3 Molecular Formula: C11H17BO3 Molecular Weight (g/mol): 208.064 MDL Number: MFCD04039035 InChI Key: WHFKSJLAGACWMF-UHFFFAOYSA-N Synonym: 4-pentyloxyphenylboronic acid, 4-pentyloxyphenyl boronic acid, 4-pentyloxy phenylboronic acid, 4-n-pentyloxy benzeneboronic acid, 4-pentoxyphenyl boronic acid, 4-pentyloxyphenyl boronicacid, boronic acid, 4-pentyloxy phenyl, 4-n-pentyloxyphenyl boronic acid, pubchem9551, acmc-209cx1 PubChem CID: 4684888 IUPAC Name: (4-pentoxyphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)OCCCCC)(O)O

Alfa Aesar™ 4-(Isopropylcarbamoyl)benzeneboronic acid, 95%

CAS: 397843-67-3 Molecular Formula: C10H14BNO3 Molecular Weight (g/mol): 207.036 MDL Number: MFCD04039353 InChI Key: GBCSEYKTZAKRMT-UHFFFAOYSA-N Synonym: 4-isopropylcarbamoyl phenyl boronic acid, 4-n-isopropylaminocarbonyl phenylboronic acid, 4-isopropylcarbamoyl benzeneboronic acid, 4-isopropylcarbamoyl phenylboronic acid, 4-propan-2-ylcarbamoyl phenyl boronic acid, 4-n-isopropylaminocarbonyl phenyl boronic acid, n-isopropyl 4-boronobenzamide, boronic acid, 4-1-methylethyl amino carbonyl phenyl, 4-1-methylethyl amino carbonyl phenyl-boronic acid PubChem CID: 2773475 IUPAC Name: [4-(propan-2-ylcarbamoyl)phenyl]boronic acid SMILES: B(C1=CC=C(C=C1)C(=O)NC(C)C)(O)O

Alfa Aesar™ 2-Benzyloxybenzeneboronic acid, 96%

CAS: 190661-29-1 Molecular Formula: C13H13BO3 Molecular Weight (g/mol): 228.054 MDL Number: MFCD01632206 InChI Key: MCAIDINWZOCYQK-UHFFFAOYSA-N Synonym: 2-benzyloxyphenylboronic acid, 2-benzyloxy phenylboronic acid, 2-benzyloxybenzeneboronic acid, 2-benzyloxy phenyl boronic acid, 2-benzyloxyphenyl boronic acid, 2-benzyloxyphenylborornic acid, 2-benzyloxy phenyl boranediol, o-benzyloxyphenylboronic acid, boronic acid, 2-phenylmethoxy phenyl PubChem CID: 2773253 IUPAC Name: (2-phenylmethoxyphenyl)boronic acid SMILES: B(C1=CC=CC=C1OCC2=CC=CC=C2)(O)O

Alfa Aesar™ 3-Aminobenzeneboronic acid hydrochloride, 98%

CAS: 85006-23-1 Molecular Formula: C6H9BClNO2 Molecular Weight (g/mol): 173.403 MDL Number: MFCD00191748 InChI Key: QBMHZZHJIBUPOX-UHFFFAOYSA-N Synonym: 3-aminophenyl boronic acid hydrochloride, 3-aminophenylboronic acid hydrochloride, 3-aminophenylboronic acid hcl, m-aminophenylboronic acid hydrochloride, 3-aminophenylboronic acid, hcl, 3-aminobenzeneboronic acid hydrochloride, boronic acid, 3-aminophenyl-, hydrochloride, pubchem1751, pubchem20396, timtec-bb sbb003816 PubChem CID: 2763241 IUPAC Name: (3-aminophenyl)boronic acid;hydrochloride SMILES: B(C1=CC(=CC=C1)N)(O)O.Cl

Alfa Aesar™ Quinoline-8-boronic acid, 99%

CAS: 86-58-8 Molecular Formula: C9H8BNO2 Molecular Weight (g/mol): 172.978 MDL Number: MFCD01114698 InChI Key: KXJJSKYICDAICD-UHFFFAOYSA-N Synonym: quinoline-8-boronic acid, 8-quinolineboronic acid, 8-quinolinylboronic acid, 8-quinoline boronic acid, quinolin-8-yl boronic acid, 8-boronoquinoline, 8-quinolylboronic acid, boronic acid, 8-quinolinyl, unii-5qs1a25ij6, quinolin-8-yl-8-boronic acid PubChem CID: 2734380 IUPAC Name: quinolin-8-ylboronic acid SMILES: B(C1=C2C(=CC=C1)C=CC=N2)(O)O

4-Ethylphenylboronic acid, 97%, Acros Organics™

CAS: 63139-21-9 Molecular Formula: C8H11BO2 Molecular Weight (g/mol): 149.98 InChI Key: RZCPLOMUUCFPQA-UHFFFAOYSA-N Synonym: 4-ethylphenyl boronic acid, 4-ethylbenzeneboronic acid, 4-ethylphenyl boranediol, 4-ethylphenylboronicacid, p-ethylphenylboronic acid, boronic acid, 4-ethylphenyl, pubchem7884, 4-ethylbenzenboronic acid, acmc-1bik6 PubChem CID: 2734352 IUPAC Name: (4-ethylphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)CC)(O)O

Alfa Aesar™ 4-Methylbenzeneboronic acid, 98%

CAS: 5720-05-8 Molecular Formula: C7H9BO2 Molecular Weight (g/mol): 135.96 MDL Number: MFCD00039138 InChI Key: BIWQNIMLAISTBV-UHFFFAOYSA-N Synonym: 4-tolylboronic acid, p-tolylboronic acid, 4-methylphenyl boronic acid, p-tolueneboronic acid, 4-methylbenzeneboronic acid, p-methylbenzeneboronic acid, boronic acid, 4-methylphenyl, boronic acid, p-tolyl, 4-methylphenylboric acid, tolyl boronic acid PubChem CID: 79799 IUPAC Name: (4-methylphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)C)(O)O

Alfa Aesar™ 4-Benzyloxybenzeneboronic acid, 97%

CAS: 146631-00-7 Molecular Formula: C13H13BO3 Molecular Weight (g/mol): 228.054 MDL Number: MFCD01075705 InChI Key: DMJHEIDWSIAXCS-UHFFFAOYSA-N Synonym: 4-benzyloxyphenylboronic acid, 4-benzyloxybenzeneboronic acid, 4-benzyloxy phenyl boronic acid, 4-benzyloxy phenylboronic acid, 4-benzyloxyphenyl boronic acid, 4-benzyl-oxy phenyl boranediol, boronic acid, 4-phenylmethoxy phenyl, 4-phenylmethoxyphenyl boronic acid, pubchem9561 PubChem CID: 2734314 IUPAC Name: (4-phenylmethoxyphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)OCC2=CC=CC=C2)(O)O

2,4,6-Trimethylphenylboronic acid, 95%, Acros Organics™

CAS: 5980-97-2 Molecular Formula: C9H13BO2 Molecular Weight (g/mol): 164.01 InChI Key: BZXQRXJJJUZZAJ-UHFFFAOYSA-N Synonym: mesitylboronic acid, 2,4,6-trimethylbenzeneboronic acid, 2-mesityleneboronic acid, 2,4,6-trimethylphenyl boronic acid, 2,4,6-trimethylphenyl boranediol, boronic acid, 2,4,6-trimethylphenyl, 2,4,6-trimethylboronic acid, boronic acid, b-2,4,6-trimethylphenyl, mesityl boronic acid, pubchem7895 PubChem CID: 292184 IUPAC Name: (2,4,6-trimethylphenyl)boronic acid SMILES: B(C1=C(C=C(C=C1C)C)C)(O)O

Alfa Aesar™ 2-Naphthaleneboronic acid, 97%

CAS: 32316-92-0 Molecular Formula: C10H9BO2 Molecular Weight (g/mol): 171.99 MDL Number: MFCD00236051 InChI Key: KPTRDYONBVUWPD-UHFFFAOYSA-N Synonym: 2-naphthaleneboronic acid, 2-naphthylboronic acid, naphthalene-2-boronic acid, 2-naphthalene boronic acid, 2-naphthaleneylboronic acid, naphthalenyl-2-boronic acid, 2-naphtahaleneboronic acid, beta-naphthylboronic acid, naphthalen-2-boronic acid, naphthalen-2-yl-boranediol PubChem CID: 2734375 IUPAC Name: naphthalen-2-ylboronic acid SMILES: B(C1=CC2=CC=CC=C2C=C1)(O)O

5-Pyrimidinylboronic acid, 97%, may contain varying amounts of anhydride, Acros Organics

CAS: 109299-78-7 Molecular Formula: C4H5BN2O2 Molecular Weight (g/mol): 123.91 InChI Key: HZFPPBMKGYINDF-UHFFFAOYSA-N Synonym: 5-pyrimidinylboronic acid, pyrimidine-5-boronic acid, 5-pyrimidineboronic acid, 5-pyrimidylboronic acid, pyrimidin-5-yl boronic acid, 5-pyrimidine boronic acid, pyrimidinyl-5-boronic acid, pyrimidine-5-ylboronic acid, pyrimidin-5-yl-5-boronic acid, pyrimidin-5-boronic acid PubChem CID: 2795193 IUPAC Name: pyrimidin-5-ylboronic acid SMILES: B(C1=CN=CN=C1)(O)O

4-Methoxy-2-methylphenylboronic acid, 97%, ACROS Organics™

CAS: 208399-66-0 Molecular Formula: C8H11BO3 Molecular Weight (g/mol): 165.98 MDL Number: MFCD02684315 InChI Key: AMSQNQJCBXQYEX-UHFFFAOYSA-N Synonym: 4-methoxy-2-methylphenyl boronic acid, 2-methyl-4-methoxyphenylboronic acid, 4-methoxy-2-methylbenzeneboronic acid, 4-methoxy-2-methylphenyl boranediol, 4-methoxy-2-methyl-phenyl boronic acid, 4-methoxy-2-methylphenbylboronic acid, 4-methoxy-2-methylphenylboronicacid, boronic acid, 4-methoxy-2-methylphenyl, 2-methyl-4-methoxybenzeneboronic acid, acmc-1cge6 PubChem CID: 2773486 IUPAC Name: (4-methoxy-2-methylphenyl)boronic acid SMILES: B(C1=C(C=C(C=C1)OC)C)(O)O

Alfa Aesar™ 4-Benzyloxy-3-fluorobenzeneboronic acid, 98%

CAS: 133057-83-7 Molecular Formula: C13H12BFO3 Molecular Weight (g/mol): 246.044 MDL Number: MFCD00994627 InChI Key: DQPDLDQJMUGVGI-UHFFFAOYSA-N Synonym: 4-benzyloxy-3-fluorophenylboronic acid, 3-fluoro-4-benzyloxyphenyl boronic acid, 4-benzyloxy-3-fluorobenzeneboronic acid, 4-benzyloxy-3-fluorophenyl boronic acid, 4-benzyloxy-3-fluorophenyl boranediol, boronic acid, 3-fluoro-4-phenylmethoxy phenyl, pubchem5322 PubChem CID: 2737788 IUPAC Name: (3-fluoro-4-phenylmethoxyphenyl)boronic acid SMILES: B(C1=CC(=C(C=C1)OCC2=CC=CC=C2)F)(O)O

Alfa Aesar™ 3-Fluoro-5-methoxybenzeneboronic acid, 98%

CAS: 609807-25-2 Molecular Formula: C7H8BFO3 Molecular Weight (g/mol): 169.946 MDL Number: MFCD07363780 InChI Key: MQFKLCWETPKBCH-UHFFFAOYSA-N Synonym: 3-fluoro-5-methoxybenzeneboronic acid, 3-fluoro-5-methoxyphenyl boronic acid, boronic acid, 3-fluoro-5-methoxyphenyl, 3-fluoro-5-methoxyphenylboronicacid, 3-fluoro-5-methoxy-phenyl boronic acid, acmc-1b9ik, 3-fluoro-5-methoxybenzeneboronicacid, 3-fluoro-5-methoxy phenylboronic acid, 3-fluoro-5-methoxyphenylboronic acid PubChem CID: 2763243 IUPAC Name: (3-fluoro-5-methoxyphenyl)boronic acid SMILES: B(C1=CC(=CC(=C1)F)OC)(O)O

Alfa Aesar™ 3-Aminobenzeneboronic acid hemisulfate, 98+%

CAS: 66472-86-4 Molecular Formula: C12H18B2N2O8S Molecular Weight (g/mol): 371.962 MDL Number: MFCD00013111 InChI Key: UKTAURVTSWDIQR-UHFFFAOYSA-N Synonym: 3-aminophenyl boronic acid sulfate 2:1, 3-aminobenzeneboronic acid hemisulfate salt, 3-aminophenylboronic acid hemisulfate, 3-aminobenzeneboronic acid hemisulfate, 3-aminophenylboronic acid hemisulphate, 4-aminophenylboronic acid hemisulfate, m-aminophenyl boronic acid, hemisulphate, boronic acid, 3-aminophenyl-, sulfate 2:1, 3-aminophenyl boronic acid; sulfuric acid, bis m-aminophenylboronic acid ; sulfuric acid PubChem CID: 16211139 IUPAC Name: (3-aminophenyl)boronic acid;sulfuric acid SMILES: B(C1=CC(=CC=C1)N)(O)O.B(C1=CC(=CC=C1)N)(O)O.OS(=O)(=O)O

Methylboronic acid, 97%, Acros Organics™

CAS: 13061-96-6 Molecular Formula: CH5BO2 Molecular Weight (g/mol): 59.86 MDL Number: MFCD00002105 InChI Key: KTMKRRPZPWUYKK-UHFFFAOYSA-N Synonym: methaneboronic acid, methyl boronic acid, dihydroxymethylborane, boronic acid, methyl, unii-8z1me41sch, methane boronic acid, 8z1me41sch, methylboronicacid, methyboronic acid, methyl-boronic acid PubChem CID: 139377 IUPAC Name: methylboronic acid SMILES: B(C)(O)O

Benzo[b]furan-2-boronic acid, 97%, Acros Organics™

CAS: 98437-24-2 Molecular Formula: C8H7BO3 Molecular Weight (g/mol): 161.95 MDL Number: MFCD00236019 InChI Key: PKRRNTJIHGOMRC-UHFFFAOYSA-N Synonym: benzofuran-2-boronic acid, benzo b furan-2-boronic acid, benzofuran-2-ylboronic acid, 2-benzofuranboronic acid, 2-benzofuranylboronic acid, 2,3-benzo b furan-2-boronic acid, 2-boronobenzo b furan, 1-benzofuran-2-yl boronic acid, 1-benzofuran-2-boronic acid PubChem CID: 2776266 IUPAC Name: 1-benzofuran-2-ylboronic acid SMILES: B(C1=CC2=CC=CC=C2O1)(O)O

Alfa Aesar™ 3-(2-Methyl-1,3-dioxolan-2-yl)benzeneboronic acid, 97%

CAS: 850568-50-2 Molecular Formula: C10H13BO4 Molecular Weight (g/mol): 208.02 MDL Number: MFCD04973736 InChI Key: NSDRSKQWUQJUAE-UHFFFAOYSA-N Synonym: 3-2-methyl-1,3-dioxolan-2-yl phenylboronic acid, 3-2-methyl-1,3-dioxolan-2-yl phenyl boronic acid, 2-3-boronobenzene-2-methyl-1,3-dioxolane, 2-3-boronophenyl-2-methyl-1,3-dioxolane, 3-2-methyl-1,3-dioxolan-2-yl benzeneboronic acid, 3-boronoacetophenone ethylene acetal, boronic acid,b-3-2-methyl-1,3-dioxolan-2-yl phenyl PubChem CID: 3674880 IUPAC Name: [3-(2-methyl-1,3-dioxolan-2-yl)phenyl]boronic acid SMILES: B(C1=CC(=CC=C1)C2(OCCO2)C)(O)O

Alfa Aesar™ 4-Cyanobenzeneboronic acid, 98%

CAS: 126747-14-6 Molecular Formula: C7H6BNO2 Molecular Weight (g/mol): 146.94 MDL Number: MFCD01318968 InChI Key: CEBAHYWORUOILU-UHFFFAOYSA-N Synonym: 4-cyanophenyl boronic acid, 4-cyanobenzeneboronic acid, 4-dihydroxyboranyl benzonitrile, 4-cyano-phenyl-boronic acid, 4-boronobenzonitrile, p-cyanophenylboronic acid, 4-cyanobenzene boronic acid, boronic acid, 4-cyanophenyl, 4-cyano-phenyl boronic acid PubChem CID: 2734326 IUPAC Name: (4-cyanophenyl)boronic acid SMILES: B(C1=CC=C(C=C1)C#N)(O)O

Alfa Aesar™ 4-Cyano-3-fluorobenzeneboronic acid, 97%

CAS: 843663-18-3 Molecular Formula: C7H5BFNO2 Molecular Weight (g/mol): 164.93 MDL Number: MFCD03411549 InChI Key: DECWLXUOZUMPBF-UHFFFAOYSA-N Synonym: 4-cyano-3-fluorobenzeneboronic acid, 4-cyano-3-fluorophenyl boronic acid, 4-borono-2-fluorobenzonitrile, 4-cyano-3-fluoro-phenyl boronic acid, 4-cyano-3-fluoro phenyl boronic acid, 3-fluoro-4-cyanophenylboronic acid, boronic acid, 4-cyano-3-fluorophenyl, 4-cyano-3-fluorophenylboronicacid, pubchem1801, acmc-209pug PubChem CID: 2783130 IUPAC Name: (4-cyano-3-fluorophenyl)boronic acid SMILES: B(C1=CC(=C(C=C1)C#N)F)(O)O

4-n-Butylphenylboronic acid, 95%, Acros Organics

CAS: 145240-28-4 Molecular Formula: C10H15BO2 Molecular Weight (g/mol): 178.04 InChI Key: UGZUUTHZEATQAM-UHFFFAOYSA-N Synonym: 4-butylphenyl boronic acid, 4-n-butylphenylboronic acid, 4-butylphenylboronicacid, 4-butylbenzeneboronic acid, 4-n-butylbenzeneboronic acid, 4-butylphenyl boranediol, boronic acid, 4-butylphenyl, pubchem18523, acmc-209cue, 4-butylphenylboranic acid PubChem CID: 4100860 IUPAC Name: (4-butylphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)CCCC)(O)O

Alfa Aesar™ 4-Methoxybenzeneboronic acid, 97+%

CAS: 5720-07-0 Molecular Formula: C7H9BO3 Molecular Weight (g/mol): 151.956 MDL Number: MFCD00039139 InChI Key: VOAAEKKFGLPLLU-UHFFFAOYSA-N Synonym: 4-methoxyphenyl boronic acid, 4-methoxybenzeneboronic acid, p-anisylboronic acid, p-methoxyphenylboronic acid, p-methoxybenzeneboronic acid, 4-methoxyphenyl boranediol, benzeneboronic acid, p-methoxy, 4-boronoanisole, 4-methoxyphenylboronicacid PubChem CID: 201262 IUPAC Name: (4-methoxyphenyl)boronic acid SMILES: B(C1=CC=C(C=C1)OC)(O)O

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