Azoles
Filtered Search Results
Isoxazole-5-carbonyl chloride, TECH, Thermo Scientific™
CAS: 62348-13-4 Molecular Formula: C4H2ClNO2 Molecular Weight (g/mol): 131.52 MDL Number: MFCD00067868 InChI Key: NASLINFISOTVJJ-UHFFFAOYSA-N Synonym: isoxazole-5-carbonyl chloride,5-isoxazolecarbonyl chloride,isoxazole-5-carbonylchloride,isoxazole-5-carboxylic acid chloride,acmc-1bhwq,5-isoxazolecarbonylchloride,isoxazol-5-carbonyl chloride,isoxazole-5-carbonyl-chloride,5-isoxazolecarbonyl chloride 9ci PubChem CID: 2736707 IUPAC Name: 1,2-oxazole-5-carbonyl chloride SMILES: ClC(=O)C1=CC=NO1
| PubChem CID | 2736707 |
|---|---|
| CAS | 62348-13-4 |
| Molecular Weight (g/mol) | 131.52 |
| MDL Number | MFCD00067868 |
| SMILES | ClC(=O)C1=CC=NO1 |
| Synonym | isoxazole-5-carbonyl chloride,5-isoxazolecarbonyl chloride,isoxazole-5-carbonylchloride,isoxazole-5-carboxylic acid chloride,acmc-1bhwq,5-isoxazolecarbonylchloride,isoxazol-5-carbonyl chloride,isoxazole-5-carbonyl-chloride,5-isoxazolecarbonyl chloride 9ci |
| IUPAC Name | 1,2-oxazole-5-carbonyl chloride |
| InChI Key | NASLINFISOTVJJ-UHFFFAOYSA-N |
| Molecular Formula | C4H2ClNO2 |
2-(1H-Imidazol-1-yl)aniline, 97%, Thermo Scientific™
CAS: 26286-54-4 Molecular Formula: C9H9N3 Molecular Weight (g/mol): 159.192 MDL Number: MFCD03274531 InChI Key: HVECTIQVQPUSEX-UHFFFAOYSA-N Synonym: 2-1h-imidazol-1-yl aniline,2-1-imidazolyl aniline,2-imidazol-1-yl-phenylamine,2-imidazol-1-yl aniline,benzenamine,2-1h-imidazol-1-yl,2-imidazolylphenylamine,2-1h-imidazol-1-yl benzenamine,pubchem10103,n-o-aminophenyl imidazole,2-imidazol-1-ylphenylamine PubChem CID: 320166 IUPAC Name: 2-imidazol-1-ylaniline SMILES: C1=CC=C(C(=C1)N)N2C=CN=C2
| PubChem CID | 320166 |
|---|---|
| CAS | 26286-54-4 |
| Molecular Weight (g/mol) | 159.192 |
| MDL Number | MFCD03274531 |
| SMILES | C1=CC=C(C(=C1)N)N2C=CN=C2 |
| Synonym | 2-1h-imidazol-1-yl aniline,2-1-imidazolyl aniline,2-imidazol-1-yl-phenylamine,2-imidazol-1-yl aniline,benzenamine,2-1h-imidazol-1-yl,2-imidazolylphenylamine,2-1h-imidazol-1-yl benzenamine,pubchem10103,n-o-aminophenyl imidazole,2-imidazol-1-ylphenylamine |
| IUPAC Name | 2-imidazol-1-ylaniline |
| InChI Key | HVECTIQVQPUSEX-UHFFFAOYSA-N |
| Molecular Formula | C9H9N3 |
Thermo Scientific Chemicals 5-Bromo-2-methyl-4-nitro-1H-imidazole, 97%, Thermo Scientific™
CAS: 18874-52-7 Molecular Formula: C4H4BrN3O2 Molecular Weight (g/mol): 205.999 MDL Number: MFCD00156130 InChI Key: YOJYWZSEUWUYAQ-UHFFFAOYSA-N Synonym: 4-bromo-2-methyl-5-nitro-1h-imidazole,5-bromo-2-methyl-4-nitroimidazole,4-bromo-2-methyl-5-nitro-3h-imidazole,4-bromo-2-methyl-5-nitroimidazole,1h-imidazole, 4-bromo-2-methyl-5-nitro,2-methyl-4-nitro-5-bromoimidazole,imidazole, 5-bromo-4-nitro-2-methyl,2-methyl-4-bromo-5-nitro-1h-imidazole,1h-imidazole,5-bromo-2-methyl-4-nitro,1h-imidazole, 5-bromo-2-methyl-4-nitro PubChem CID: 29322 IUPAC Name: 5-bromo-2-methyl-4-nitro-1H-imidazole SMILES: CC1=NC(=C(N1)Br)[N+](=O)[O-]
| PubChem CID | 29322 |
|---|---|
| CAS | 18874-52-7 |
| Molecular Weight (g/mol) | 205.999 |
| MDL Number | MFCD00156130 |
| SMILES | CC1=NC(=C(N1)Br)[N+](=O)[O-] |
| Synonym | 4-bromo-2-methyl-5-nitro-1h-imidazole,5-bromo-2-methyl-4-nitroimidazole,4-bromo-2-methyl-5-nitro-3h-imidazole,4-bromo-2-methyl-5-nitroimidazole,1h-imidazole, 4-bromo-2-methyl-5-nitro,2-methyl-4-nitro-5-bromoimidazole,imidazole, 5-bromo-4-nitro-2-methyl,2-methyl-4-bromo-5-nitro-1h-imidazole,1h-imidazole,5-bromo-2-methyl-4-nitro,1h-imidazole, 5-bromo-2-methyl-4-nitro |
| IUPAC Name | 5-bromo-2-methyl-4-nitro-1H-imidazole |
| InChI Key | YOJYWZSEUWUYAQ-UHFFFAOYSA-N |
| Molecular Formula | C4H4BrN3O2 |
Indazole, 96%
CAS: 271-44-3 Molecular Formula: C7H6N2 Molecular Weight (g/mol): 118.14 InChI Key: BAXOFTOLAUCFNW-UHFFFAOYSA-N Synonym: indazole,1h-benzopyrazole,2-azaindole,isoindazole,2h-indazole,1,2-diazaindene,1,2-benzodiazole,1h-indazol,benzopyrazole,1,2-benzopyrazole PubChem CID: 9221 ChEBI: CHEBI:36669 IUPAC Name: 1H-indazole SMILES: C1=CC=C2C(=C1)C=NN2
| PubChem CID | 9221 |
|---|---|
| CAS | 271-44-3 |
| Molecular Weight (g/mol) | 118.14 |
| ChEBI | CHEBI:36669 |
| SMILES | C1=CC=C2C(=C1)C=NN2 |
| Synonym | indazole,1h-benzopyrazole,2-azaindole,isoindazole,2h-indazole,1,2-diazaindene,1,2-benzodiazole,1h-indazol,benzopyrazole,1,2-benzopyrazole |
| IUPAC Name | 1H-indazole |
| InChI Key | BAXOFTOLAUCFNW-UHFFFAOYSA-N |
| Molecular Formula | C7H6N2 |
1-Benzyl-3-methylimidazolium chloride, 97%
CAS: 36443-80-8 Molecular Formula: C11H13ClN2 Molecular Weight (g/mol): 208.689 MDL Number: MFCD07784451 InChI Key: FCRZSGZCOGHOGF-UHFFFAOYSA-M Synonym: 1-benzyl-3-methylimidazolium chloride,1-benzyl-3-methyl-1h-imidazol-3-ium chloride,1h-imidazolium,1-methyl-3-phenylmethyl-, chloride 1:1,3-benzyl-1-methylimidazol-1-ium chloride,dsstox_cid_27905,dsstox_rid_82658,dsstox_gsid_47929,ksc576i7l,1-methyl-3-benzylimidazolium chloride,1-benzyl-3-methylimidaz-olium chloride PubChem CID: 10560335 IUPAC Name: 1-benzyl-3-methylimidazol-3-ium;chloride SMILES: C[N+]1=CN(C=C1)CC2=CC=CC=C2.[Cl-]
| PubChem CID | 10560335 |
|---|---|
| CAS | 36443-80-8 |
| Molecular Weight (g/mol) | 208.689 |
| MDL Number | MFCD07784451 |
| SMILES | C[N+]1=CN(C=C1)CC2=CC=CC=C2.[Cl-] |
| Synonym | 1-benzyl-3-methylimidazolium chloride,1-benzyl-3-methyl-1h-imidazol-3-ium chloride,1h-imidazolium,1-methyl-3-phenylmethyl-, chloride 1:1,3-benzyl-1-methylimidazol-1-ium chloride,dsstox_cid_27905,dsstox_rid_82658,dsstox_gsid_47929,ksc576i7l,1-methyl-3-benzylimidazolium chloride,1-benzyl-3-methylimidaz-olium chloride |
| IUPAC Name | 1-benzyl-3-methylimidazol-3-ium;chloride |
| InChI Key | FCRZSGZCOGHOGF-UHFFFAOYSA-M |
| Molecular Formula | C11H13ClN2 |
2-chlorothiazole-4-carboxylic acid, 97%
CAS: 5198-87-8 Molecular Formula: C4H2ClNO2S Molecular Weight (g/mol): 163.58 InChI Key: UVYJJJQMZPCYKY-UHFFFAOYSA-N Synonym: 2-chlorothiazole-4-carboxylic acid,2-chloro-4-thiazolecarboxylic acid,2-chloro-thiazole-4-carboxylic acid,4-carboxy-2-chloro-1,3-thiazole,4-thiazolecarboxylic acid, 2-chloro,2chloro-4-thiazolecarboxylic acid PubChem CID: 21803026 IUPAC Name: 2-chloro-1,3-thiazole-4-carboxylic acid SMILES: C1=C(N=C(S1)Cl)C(=O)O
| PubChem CID | 21803026 |
|---|---|
| CAS | 5198-87-8 |
| Molecular Weight (g/mol) | 163.58 |
| SMILES | C1=C(N=C(S1)Cl)C(=O)O |
| Synonym | 2-chlorothiazole-4-carboxylic acid,2-chloro-4-thiazolecarboxylic acid,2-chloro-thiazole-4-carboxylic acid,4-carboxy-2-chloro-1,3-thiazole,4-thiazolecarboxylic acid, 2-chloro,2chloro-4-thiazolecarboxylic acid |
| IUPAC Name | 2-chloro-1,3-thiazole-4-carboxylic acid |
| InChI Key | UVYJJJQMZPCYKY-UHFFFAOYSA-N |
| Molecular Formula | C4H2ClNO2S |
Ornidazole, 99%
CAS: 16773-42-5 Molecular Formula: C7H10ClN3O3 Molecular Weight (g/mol): 219.625 MDL Number: MFCD00057960 InChI Key: IPWKIXLWTCNBKN-UHFFFAOYSA-N Synonym: ornidazole,madelen,tiberal,ornidazolum,1-3-chloro-2-hydroxypropyl-2-methyl-5-nitroimidazole,ornidazol,1-chloro-3-2-methyl-5-nitro-1h-imidazol-1-yl propan-2-ol,1-chloro-3-2-methyl-5-nitro-1h-imidazol-1-yl-2-propanol,ornidal,1-2-hydroxy-3-chloropropyl-2-methyl-5-nitroimidazole PubChem CID: 28061 ChEBI: CHEBI:75176 IUPAC Name: 1-chloro-3-(2-methyl-5-nitroimidazol-1-yl)propan-2-ol SMILES: CC1=NC=C(N1CC(CCl)O)[N+](=O)[O-]
| PubChem CID | 28061 |
|---|---|
| CAS | 16773-42-5 |
| Molecular Weight (g/mol) | 219.625 |
| ChEBI | CHEBI:75176 |
| MDL Number | MFCD00057960 |
| SMILES | CC1=NC=C(N1CC(CCl)O)[N+](=O)[O-] |
| Synonym | ornidazole,madelen,tiberal,ornidazolum,1-3-chloro-2-hydroxypropyl-2-methyl-5-nitroimidazole,ornidazol,1-chloro-3-2-methyl-5-nitro-1h-imidazol-1-yl propan-2-ol,1-chloro-3-2-methyl-5-nitro-1h-imidazol-1-yl-2-propanol,ornidal,1-2-hydroxy-3-chloropropyl-2-methyl-5-nitroimidazole |
| IUPAC Name | 1-chloro-3-(2-methyl-5-nitroimidazol-1-yl)propan-2-ol |
| InChI Key | IPWKIXLWTCNBKN-UHFFFAOYSA-N |
| Molecular Formula | C7H10ClN3O3 |
1,2,4-1H-Triazole, 99.5%
CAS: 288-88-0 Molecular Formula: C2H3N3 Molecular Weight (g/mol): 69.06 MDL Number: MFCD00005228 InChI Key: NSPMIYGKQJPBQR-UHFFFAOYSA-N Synonym: 1,2,4-triazole,4h-1,2,4-triazole,pyrrodiazole,s-triazole,1,2,4-1h-triazole,1h-1,2,4-triazol,unii-10ms0y1rdi,1,2,4 triazole,1,2,4-triazol,4h-1,2,4-triazole van PubChem CID: 9257 ChEBI: CHEBI:35550 IUPAC Name: 1H-1,2,4-triazole SMILES: C1=NC=NN1
| PubChem CID | 9257 |
|---|---|
| CAS | 288-88-0 |
| Molecular Weight (g/mol) | 69.06 |
| ChEBI | CHEBI:35550 |
| MDL Number | MFCD00005228 |
| SMILES | C1=NC=NN1 |
| Synonym | 1,2,4-triazole,4h-1,2,4-triazole,pyrrodiazole,s-triazole,1,2,4-1h-triazole,1h-1,2,4-triazol,unii-10ms0y1rdi,1,2,4 triazole,1,2,4-triazol,4h-1,2,4-triazole van |
| IUPAC Name | 1H-1,2,4-triazole |
| InChI Key | NSPMIYGKQJPBQR-UHFFFAOYSA-N |
| Molecular Formula | C2H3N3 |
2,5-Dimethyl-1,3-oxazole-4-carboxylic acid, 97%, Thermo Scientific™
CAS: 23000-14-8 Molecular Formula: C6H7NO3 Molecular Weight (g/mol): 141.126 MDL Number: MFCD03011595 InChI Key: LHGRUGVXZLHYKE-UHFFFAOYSA-N Synonym: 2,5-dimethyloxazole-4-carboxylic acid,dimethyl-1,3-oxazole-4-carboxylic acid,4-oxazolecarboxylic acid, 2,5-dimethyl,2,5-dimethyl-1,3-oxazole-4-carboxylicacid,4-carboxy-2,5-dimethyl-1,3-oxazole,2,5-dimethyl-oxazole-4-carboxylic acid,2.5-dimethyl-1,3-oxazole-4-carboxylic acid PubChem CID: 2795465 IUPAC Name: 2,5-dimethyl-1,3-oxazole-4-carboxylic acid SMILES: CC1=C(N=C(O1)C)C(=O)O
| PubChem CID | 2795465 |
|---|---|
| CAS | 23000-14-8 |
| Molecular Weight (g/mol) | 141.126 |
| MDL Number | MFCD03011595 |
| SMILES | CC1=C(N=C(O1)C)C(=O)O |
| Synonym | 2,5-dimethyloxazole-4-carboxylic acid,dimethyl-1,3-oxazole-4-carboxylic acid,4-oxazolecarboxylic acid, 2,5-dimethyl,2,5-dimethyl-1,3-oxazole-4-carboxylicacid,4-carboxy-2,5-dimethyl-1,3-oxazole,2,5-dimethyl-oxazole-4-carboxylic acid,2.5-dimethyl-1,3-oxazole-4-carboxylic acid |
| IUPAC Name | 2,5-dimethyl-1,3-oxazole-4-carboxylic acid |
| InChI Key | LHGRUGVXZLHYKE-UHFFFAOYSA-N |
| Molecular Formula | C6H7NO3 |
4-Imidazoleacetic acid hydrochloride, 98%
CAS: 3251-69-2 Molecular Formula: C5H7ClN2O2 Molecular Weight (g/mol): 162.57 MDL Number: MFCD00012698 InChI Key: MWHLCFYPFGFBQO-UHFFFAOYSA-N Synonym: 4-imidazoleacetic acid hydrochloride,2-1h-imidazol-5-yl acetic acid hydrochloride,imidazole-4-acetic acid hydrochloride,2-1h-imidazol-4-yl acetic acid hydrochloride,4-imidazoleacetic acid hcl,imidazoleacetic acid hydrochloride,unii-et7a74roao,4-imidazoleaceticacidhydrochloride,i4aa,et7a74roao PubChem CID: 145685 IUPAC Name: 2-(1H-imidazol-5-yl)acetic acid;hydrochloride SMILES: Cl.OC(=O)CC1=CN=CN1
| PubChem CID | 145685 |
|---|---|
| CAS | 3251-69-2 |
| Molecular Weight (g/mol) | 162.57 |
| MDL Number | MFCD00012698 |
| SMILES | Cl.OC(=O)CC1=CN=CN1 |
| Synonym | 4-imidazoleacetic acid hydrochloride,2-1h-imidazol-5-yl acetic acid hydrochloride,imidazole-4-acetic acid hydrochloride,2-1h-imidazol-4-yl acetic acid hydrochloride,4-imidazoleacetic acid hcl,imidazoleacetic acid hydrochloride,unii-et7a74roao,4-imidazoleaceticacidhydrochloride,i4aa,et7a74roao |
| IUPAC Name | 2-(1H-imidazol-5-yl)acetic acid;hydrochloride |
| InChI Key | MWHLCFYPFGFBQO-UHFFFAOYSA-N |
| Molecular Formula | C5H7ClN2O2 |
3-Methylpyrazole, 99%
CAS: 1453-58-3 Molecular Formula: C4H6N2 Molecular Weight (g/mol): 82.11 MDL Number: MFCD00005240,MFCD08685900 InChI Key: XKVUYEYANWFIJX-UHFFFAOYSA-N PubChem CID: 15073 IUPAC Name: 5-methyl-1H-pyrazole SMILES: CC1=CC=NN1
| PubChem CID | 15073 |
|---|---|
| CAS | 1453-58-3 |
| Molecular Weight (g/mol) | 82.11 |
| MDL Number | MFCD00005240,MFCD08685900 |
| SMILES | CC1=CC=NN1 |
| IUPAC Name | 5-methyl-1H-pyrazole |
| InChI Key | XKVUYEYANWFIJX-UHFFFAOYSA-N |
| Molecular Formula | C4H6N2 |
2-Amino-5-nitrothiazole, 97%
CAS: 121-66-4 Molecular Formula: C3H3N3O2S Molecular Weight (g/mol): 145.14 MDL Number: MFCD00005326 InChI Key: MIHADVKEHAFNPG-UHFFFAOYSA-N Synonym: 2-amino-5-nitrothiazole,5-nitrothiazol-2-amine,enheptin,entramin,2-thiazolamine, 5-nitro,nitramin ido,amnizol soluble,enheptin-t,5-nitro-2-thiazolamine,enheptin premix PubChem CID: 8486 ChEBI: CHEBI:82386 IUPAC Name: 5-nitro-1,3-thiazol-2-amine SMILES: NC1=NC=C(S1)[N+]([O-])=O
| PubChem CID | 8486 |
|---|---|
| CAS | 121-66-4 |
| Molecular Weight (g/mol) | 145.14 |
| ChEBI | CHEBI:82386 |
| MDL Number | MFCD00005326 |
| SMILES | NC1=NC=C(S1)[N+]([O-])=O |
| Synonym | 2-amino-5-nitrothiazole,5-nitrothiazol-2-amine,enheptin,entramin,2-thiazolamine, 5-nitro,nitramin ido,amnizol soluble,enheptin-t,5-nitro-2-thiazolamine,enheptin premix |
| IUPAC Name | 5-nitro-1,3-thiazol-2-amine |
| InChI Key | MIHADVKEHAFNPG-UHFFFAOYSA-N |
| Molecular Formula | C3H3N3O2S |
3-Amino-4-pyrazolecarbonitrile, 98%
CAS: 16617-46-2 MDL Number: MFCD00005237 InChI Key: FFNKBQRKZRMYCL-UHFFFAOYSA-N Synonym: 3-amino-4-pyrazolecarbonitrile,3-amino-1h-pyrazole-4-carbonitrile,3-amino-4-cyanopyrazole,3-aminopyrazole-4-carbonitrile,5-amino-4-cyanopyrazole,1h-pyrazole-4-carbonitrile, 3-amino,5-aminopyrazole-4-carbonitrile,3-amino-4-cyano-1h-pyrazole,4-cyano-5-aminopyrazole,3-amino-4-cyano pyrazole PubChem CID: 85515 IUPAC Name: 5-amino-1H-pyrazole-4-carbonitrile SMILES: C1=NNC(=C1C#N)N
| PubChem CID | 85515 |
|---|---|
| CAS | 16617-46-2 |
| MDL Number | MFCD00005237 |
| SMILES | C1=NNC(=C1C#N)N |
| Synonym | 3-amino-4-pyrazolecarbonitrile,3-amino-1h-pyrazole-4-carbonitrile,3-amino-4-cyanopyrazole,3-aminopyrazole-4-carbonitrile,5-amino-4-cyanopyrazole,1h-pyrazole-4-carbonitrile, 3-amino,5-aminopyrazole-4-carbonitrile,3-amino-4-cyano-1h-pyrazole,4-cyano-5-aminopyrazole,3-amino-4-cyano pyrazole |
| IUPAC Name | 5-amino-1H-pyrazole-4-carbonitrile |
| InChI Key | FFNKBQRKZRMYCL-UHFFFAOYSA-N |
1-Methyl-1H-imidazole-5-carbaldehyde, 97%, Thermo Scientific™
CAS: 39021-62-0 Molecular Formula: C5H6N2O Molecular Weight (g/mol): 110.116 InChI Key: BNYKZFOZWZMEJD-UHFFFAOYSA-N Synonym: 1-methyl-1h-imidazole-5-carbaldehyde,1-methyl-1h-imidazole-5-carboxaldehyde,3-methyl-3h-imidazole-4-carbaldehyde,1-methylimidazole-5-carboxaldehyde,1h-imidazole-5-carboxaldehyde, 1-methyl,1-methylimidazole-5-carbaldehyde,1-methyl-5-imidazolecarboxaldehyde,1-methylimidazole-5-carboxaldeyde,pubchem8047,5-formyl-1-methylimidazole PubChem CID: 573592 IUPAC Name: 3-methylimidazole-4-carbaldehyde SMILES: CN1C=NC=C1C=O
| PubChem CID | 573592 |
|---|---|
| CAS | 39021-62-0 |
| Molecular Weight (g/mol) | 110.116 |
| SMILES | CN1C=NC=C1C=O |
| Synonym | 1-methyl-1h-imidazole-5-carbaldehyde,1-methyl-1h-imidazole-5-carboxaldehyde,3-methyl-3h-imidazole-4-carbaldehyde,1-methylimidazole-5-carboxaldehyde,1h-imidazole-5-carboxaldehyde, 1-methyl,1-methylimidazole-5-carbaldehyde,1-methyl-5-imidazolecarboxaldehyde,1-methylimidazole-5-carboxaldeyde,pubchem8047,5-formyl-1-methylimidazole |
| IUPAC Name | 3-methylimidazole-4-carbaldehyde |
| InChI Key | BNYKZFOZWZMEJD-UHFFFAOYSA-N |
| Molecular Formula | C5H6N2O |
4-Methyl-2-phenyl-1,3-oxazole-5-carboxylic acid, 97%, Thermo Scientific™
CAS: 91137-55-2 Molecular Formula: C11H9NO3 Molecular Weight (g/mol): 203.197 MDL Number: MFCD01566859 InChI Key: HRFYZRHGBICKAG-UHFFFAOYSA-N Synonym: 4-methyl-2-phenyloxazole-5-carboxylic acid,5-oxazolecarboxylicacid, 4-methyl-2-phenyl,5-oxazolecarboxylic acid, 4-methyl-2-phenyl PubChem CID: 4176428 IUPAC Name: 4-methyl-2-phenyl-1,3-oxazole-5-carboxylic acid SMILES: CC1=C(OC(=N1)C2=CC=CC=C2)C(=O)O
| PubChem CID | 4176428 |
|---|---|
| CAS | 91137-55-2 |
| Molecular Weight (g/mol) | 203.197 |
| MDL Number | MFCD01566859 |
| SMILES | CC1=C(OC(=N1)C2=CC=CC=C2)C(=O)O |
| Synonym | 4-methyl-2-phenyloxazole-5-carboxylic acid,5-oxazolecarboxylicacid, 4-methyl-2-phenyl,5-oxazolecarboxylic acid, 4-methyl-2-phenyl |
| IUPAC Name | 4-methyl-2-phenyl-1,3-oxazole-5-carboxylic acid |
| InChI Key | HRFYZRHGBICKAG-UHFFFAOYSA-N |
| Molecular Formula | C11H9NO3 |