Organoheterocyclic compounds
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1-Benzyl-4-cyano-4-hydroxypiperidine, 98%, Thermo Scientific™
CAS: 6094-60-6 Molecular Formula: C13H16N2O Molecular Weight (g/mol): 216.28 MDL Number: MFCD00023752 InChI Key: XQRLXUYZKZXSBN-UHFFFAOYSA-N Synonym: 1-benzyl-4-cyano-4-hydroxypiperidine,maybridge1_006722,acmc-20aoxx,1-benzyl-4-hydroxyisonipecotonitrile,4-hydroxy-1-benzylpiperidine-4-carbonitrile,1-benyl-4-hydroxy-piperidine-4-carbonitrile,1-benzyl-4-hydroxy-4-piperidinecarbonitrile,1-benzyl-4-hydroxy-piperidine-4-carbonitrile,4-hydroxy-1-phenylmethyl-4-piperidinecarbonitrile PubChem CID: 80189 IUPAC Name: 1-benzyl-4-hydroxypiperidine-4-carbonitrile SMILES: OC1(CCN(CC2=CC=CC=C2)CC1)C#N
| PubChem CID | 80189 |
|---|---|
| CAS | 6094-60-6 |
| Molecular Weight (g/mol) | 216.28 |
| MDL Number | MFCD00023752 |
| SMILES | OC1(CCN(CC2=CC=CC=C2)CC1)C#N |
| Synonym | 1-benzyl-4-cyano-4-hydroxypiperidine,maybridge1_006722,acmc-20aoxx,1-benzyl-4-hydroxyisonipecotonitrile,4-hydroxy-1-benzylpiperidine-4-carbonitrile,1-benyl-4-hydroxy-piperidine-4-carbonitrile,1-benzyl-4-hydroxy-4-piperidinecarbonitrile,1-benzyl-4-hydroxy-piperidine-4-carbonitrile,4-hydroxy-1-phenylmethyl-4-piperidinecarbonitrile |
| IUPAC Name | 1-benzyl-4-hydroxypiperidine-4-carbonitrile |
| InChI Key | XQRLXUYZKZXSBN-UHFFFAOYSA-N |
| Molecular Formula | C13H16N2O |
4-(1-Pyrrolidinyl)piperidine, 99%
CAS: 5004-07-9 Molecular Formula: C9H18N2 Molecular Weight (g/mol): 154.25 MDL Number: MFCD00038011 InChI Key: STWODXDTKGTVCJ-UHFFFAOYSA-N
| CAS | 5004-07-9 |
|---|---|
| Molecular Weight (g/mol) | 154.25 |
| MDL Number | MFCD00038011 |
| InChI Key | STWODXDTKGTVCJ-UHFFFAOYSA-N |
| Molecular Formula | C9H18N2 |
3-Bromo-4-nitropyridine N-oxide, 98+%, Thermo Scientific Chemicals
CAS: 1678-49-5 Molecular Formula: C5H3BrN2O3 Molecular Weight (g/mol): 218.994 MDL Number: MFCD00085925 InChI Key: YZQMKADIENBVLH-UHFFFAOYSA-N Synonym: 3-bromo-4-nitropyridine n-oxide,3-bromo-4-nitropyridine 1-oxide,3-bromo-4-nitropyridin-1-ium-1-olate,pyridine, 3-bromo-4-nitro-, 1-oxide,3-bromo-4-nitropyridine-n-oxide,3-bromo-4-nitro-1-oxido-pyridin-1-ium,3-bromo-4-nitropyridin-1-ol,acmc-1bxbw,3-bromo-4-nitropyridine oxide,3-bromo-4-nitropyridin-n-oxide PubChem CID: 548521 IUPAC Name: 3-bromo-4-nitro-1-oxidopyridin-1-ium SMILES: C1=C[N+](=CC(=C1[N+](=O)[O-])Br)[O-]
| PubChem CID | 548521 |
|---|---|
| CAS | 1678-49-5 |
| Molecular Weight (g/mol) | 218.994 |
| MDL Number | MFCD00085925 |
| SMILES | C1=C[N+](=CC(=C1[N+](=O)[O-])Br)[O-] |
| Synonym | 3-bromo-4-nitropyridine n-oxide,3-bromo-4-nitropyridine 1-oxide,3-bromo-4-nitropyridin-1-ium-1-olate,pyridine, 3-bromo-4-nitro-, 1-oxide,3-bromo-4-nitropyridine-n-oxide,3-bromo-4-nitro-1-oxido-pyridin-1-ium,3-bromo-4-nitropyridin-1-ol,acmc-1bxbw,3-bromo-4-nitropyridine oxide,3-bromo-4-nitropyridin-n-oxide |
| IUPAC Name | 3-bromo-4-nitro-1-oxidopyridin-1-ium |
| InChI Key | YZQMKADIENBVLH-UHFFFAOYSA-N |
| Molecular Formula | C5H3BrN2O3 |
3,5-Dichloro-2-cyanopyridine, 95%, Thermo Scientific Chemicals
CAS: 85331-33-5 Molecular Formula: C6H2Cl2N2 Molecular Weight (g/mol): 172.996 MDL Number: MFCD03788758 InChI Key: ATUOLSDAAPMVJJ-UHFFFAOYSA-N Synonym: 3,5-dichloro-2-cyanopyridine,2-cyano-3,5-dichloropyridine,3,5-dichloropicolinonitrile,2-pyridinecarbonitrile, 3,5-dichloro,pubchem2423,acmc-209q5l,ksc448a0l,tpc-py042,3,5-dichloro-2-cyano pyridine,3,5-dichloro-2-pyridinecarbonitrile PubChem CID: 2769699 IUPAC Name: 3,5-dichloropyridine-2-carbonitrile SMILES: C1=C(C=NC(=C1Cl)C#N)Cl
| PubChem CID | 2769699 |
|---|---|
| CAS | 85331-33-5 |
| Molecular Weight (g/mol) | 172.996 |
| MDL Number | MFCD03788758 |
| SMILES | C1=C(C=NC(=C1Cl)C#N)Cl |
| Synonym | 3,5-dichloro-2-cyanopyridine,2-cyano-3,5-dichloropyridine,3,5-dichloropicolinonitrile,2-pyridinecarbonitrile, 3,5-dichloro,pubchem2423,acmc-209q5l,ksc448a0l,tpc-py042,3,5-dichloro-2-cyano pyridine,3,5-dichloro-2-pyridinecarbonitrile |
| IUPAC Name | 3,5-dichloropyridine-2-carbonitrile |
| InChI Key | ATUOLSDAAPMVJJ-UHFFFAOYSA-N |
| Molecular Formula | C6H2Cl2N2 |
2,3,5,6-Tetrachloropyridine, 98%
CAS: 2402-79-1 Molecular Formula: C5HCl4N Molecular Weight (g/mol): 216.87 MDL Number: MFCD00092428 InChI Key: FATBKZJZAHWCSL-UHFFFAOYSA-N Synonym: pyridine, 2,3,5,6-tetrachloro,unii-wjr8hay65e,wjr8hay65e,2,3,5,6-tetrachlorpyridine,tetrachloropyridine, 2,3,5,6,dsstox_cid_7467,acmc-209g7z,2,5,6-tetrachloropyridine,dsstox_rid_78464,2,3,5,6tetrachloropyridine PubChem CID: 16990 IUPAC Name: 2,3,5,6-tetrachloropyridine SMILES: ClC1=CC(Cl)=C(Cl)N=C1Cl
| PubChem CID | 16990 |
|---|---|
| CAS | 2402-79-1 |
| Molecular Weight (g/mol) | 216.87 |
| MDL Number | MFCD00092428 |
| SMILES | ClC1=CC(Cl)=C(Cl)N=C1Cl |
| Synonym | pyridine, 2,3,5,6-tetrachloro,unii-wjr8hay65e,wjr8hay65e,2,3,5,6-tetrachlorpyridine,tetrachloropyridine, 2,3,5,6,dsstox_cid_7467,acmc-209g7z,2,5,6-tetrachloropyridine,dsstox_rid_78464,2,3,5,6tetrachloropyridine |
| IUPAC Name | 2,3,5,6-tetrachloropyridine |
| InChI Key | FATBKZJZAHWCSL-UHFFFAOYSA-N |
| Molecular Formula | C5HCl4N |
Ethyl isonicotinate, 98%
CAS: 1570-45-2 Molecular Formula: C8H9NO2 Molecular Weight (g/mol): 151.165 MDL Number: MFCD00006428 InChI Key: MCRPKBUFXAKDKI-UHFFFAOYSA-N Synonym: ethyl isonicotinate,4-picolinic acid ethyl ester,ethyl 4-pyridinecarboxylate,isonicotinic acid, ethyl ester,4-carbethoxypyridine,4-pyridinecarboxylic acid, ethyl ester,isonicotinic acid ethyl ester,4-carboethoxypyridine,gamma-pyridinecarboxylic acid ethyl ester,.gamma.-pyridinecarboxylic acid ethyl ester PubChem CID: 15291 IUPAC Name: ethyl pyridine-4-carboxylate SMILES: CCOC(=O)C1=CC=NC=C1
| PubChem CID | 15291 |
|---|---|
| CAS | 1570-45-2 |
| Molecular Weight (g/mol) | 151.165 |
| MDL Number | MFCD00006428 |
| SMILES | CCOC(=O)C1=CC=NC=C1 |
| Synonym | ethyl isonicotinate,4-picolinic acid ethyl ester,ethyl 4-pyridinecarboxylate,isonicotinic acid, ethyl ester,4-carbethoxypyridine,4-pyridinecarboxylic acid, ethyl ester,isonicotinic acid ethyl ester,4-carboethoxypyridine,gamma-pyridinecarboxylic acid ethyl ester,.gamma.-pyridinecarboxylic acid ethyl ester |
| IUPAC Name | ethyl pyridine-4-carboxylate |
| InChI Key | MCRPKBUFXAKDKI-UHFFFAOYSA-N |
| Molecular Formula | C8H9NO2 |
1-(Heptafluorobutyryl)imidazole, 97%
CAS: 32477-35-3 Molecular Formula: C7H3F7N2O Molecular Weight (g/mol): 264.103 MDL Number: MFCD00014503 InChI Key: MSYHGYDAVLDKCE-UHFFFAOYSA-N Synonym: n-heptafluorobutyrylimidazole,1-heptafluorobutyryl imidazole,heptafluorobutyrylimidazole,n-heptafluorobutyryl imidazole,hfbi,1-perfluorobutyryl imidazole,2,2,3,3,4,4,4-heptafluoro-1-1h-imidazol-1-yl butan-1-one,1-2,2,3,3,4,4,4-heptafluoro-1-oxobutyl-1h-imidazole,2,2,3,3,4,4,4-heptafluoro-1-imidazol-1-yl butan-1-one,1h-imidazole, 1-2,2,3,3,4,4,4-heptafluoro-1-oxobutyl PubChem CID: 94431 IUPAC Name: 2,2,3,3,4,4,4-heptafluoro-1-imidazol-1-ylbutan-1-one SMILES: C1=CN(C=N1)C(=O)C(C(C(F)(F)F)(F)F)(F)F
| PubChem CID | 94431 |
|---|---|
| CAS | 32477-35-3 |
| Molecular Weight (g/mol) | 264.103 |
| MDL Number | MFCD00014503 |
| SMILES | C1=CN(C=N1)C(=O)C(C(C(F)(F)F)(F)F)(F)F |
| Synonym | n-heptafluorobutyrylimidazole,1-heptafluorobutyryl imidazole,heptafluorobutyrylimidazole,n-heptafluorobutyryl imidazole,hfbi,1-perfluorobutyryl imidazole,2,2,3,3,4,4,4-heptafluoro-1-1h-imidazol-1-yl butan-1-one,1-2,2,3,3,4,4,4-heptafluoro-1-oxobutyl-1h-imidazole,2,2,3,3,4,4,4-heptafluoro-1-imidazol-1-yl butan-1-one,1h-imidazole, 1-2,2,3,3,4,4,4-heptafluoro-1-oxobutyl |
| IUPAC Name | 2,2,3,3,4,4,4-heptafluoro-1-imidazol-1-ylbutan-1-one |
| InChI Key | MSYHGYDAVLDKCE-UHFFFAOYSA-N |
| Molecular Formula | C7H3F7N2O |
Methyl 5-amino-2-furoate, 98%
CAS: 22600-30-2 Molecular Formula: C6H7NO3 Molecular Weight (g/mol): 141.126 MDL Number: MFCD00051661 InChI Key: KLKQGSISBRVCTK-UHFFFAOYSA-N Synonym: methyl 5-amino-2-furoate,methyl5-amino-2-furoate,5-aminofuran-2-carboxylic acid methyl ester,methyl 5-amino-2-furancarboxylate,2-furancarboxylic acid, 5-amino-, methyl ester,methyl 5-amino-2-furate,acmc-1cq6f,methyl-2-amino-5-furoate,2-amino-5-methoxycarbonylfuran,methyl5-aminofuran-2-carboxylate PubChem CID: 5072225 IUPAC Name: methyl 5-aminofuran-2-carboxylate SMILES: COC(=O)C1=CC=C(O1)N
| PubChem CID | 5072225 |
|---|---|
| CAS | 22600-30-2 |
| Molecular Weight (g/mol) | 141.126 |
| MDL Number | MFCD00051661 |
| SMILES | COC(=O)C1=CC=C(O1)N |
| Synonym | methyl 5-amino-2-furoate,methyl5-amino-2-furoate,5-aminofuran-2-carboxylic acid methyl ester,methyl 5-amino-2-furancarboxylate,2-furancarboxylic acid, 5-amino-, methyl ester,methyl 5-amino-2-furate,acmc-1cq6f,methyl-2-amino-5-furoate,2-amino-5-methoxycarbonylfuran,methyl5-aminofuran-2-carboxylate |
| IUPAC Name | methyl 5-aminofuran-2-carboxylate |
| InChI Key | KLKQGSISBRVCTK-UHFFFAOYSA-N |
| Molecular Formula | C6H7NO3 |
1-Phenylpyrrole, 99%
CAS: 635-90-5 Molecular Formula: C10H9N Molecular Weight (g/mol): 143.19 MDL Number: MFCD00005343 InChI Key: GEZGAZKEOUKLBR-UHFFFAOYSA-N Synonym: 1-phenyl-1h-pyrrole,n-phenylpyrrole,pyrrole, 1-phenyl,1h-pyrrole, 1-phenyl,unii-3od6n6545h,chembl84459,1-phenylpyrrol,acmc-209ngl,1-phenylpyrrole,1-phenyl-1h-pyrrole # PubChem CID: 12480 IUPAC Name: 1-phenylpyrrole SMILES: C1=CN(C=C1)C1=CC=CC=C1
| PubChem CID | 12480 |
|---|---|
| CAS | 635-90-5 |
| Molecular Weight (g/mol) | 143.19 |
| MDL Number | MFCD00005343 |
| SMILES | C1=CN(C=C1)C1=CC=CC=C1 |
| Synonym | 1-phenyl-1h-pyrrole,n-phenylpyrrole,pyrrole, 1-phenyl,1h-pyrrole, 1-phenyl,unii-3od6n6545h,chembl84459,1-phenylpyrrol,acmc-209ngl,1-phenylpyrrole,1-phenyl-1h-pyrrole # |
| IUPAC Name | 1-phenylpyrrole |
| InChI Key | GEZGAZKEOUKLBR-UHFFFAOYSA-N |
| Molecular Formula | C10H9N |
5,5-Dimethyl-1,3-dioxan-2-one, tech.
CAS: 3592-12-9 Molecular Formula: C6H10O3 Molecular Weight (g/mol): 130.14 MDL Number: MFCD00014650 InChI Key: JRFXQKZEGILCCO-UHFFFAOYSA-N Synonym: neopentylene carbonate,2,2-dimethyltrimethylene carbonate,5,5-dimethyl-1,3-diox-2-one,acmc-1adx1,3-nitro-5-chlorobenzenesulfonamide,5,5-dimethyltrimethylene carbonate,5,5-dimethyl-1,3-dioxane-2-one,5,5-dimethyl-2-oxo-1,3-dioxane,1,3-dioxan-2-one,5,5-dimethyl,5,5-dimethyl-1,3 dioxan-2-one PubChem CID: 137984 IUPAC Name: 5,5-dimethyl-1,3-dioxan-2-one SMILES: CC1(COC(=O)OC1)C
| PubChem CID | 137984 |
|---|---|
| CAS | 3592-12-9 |
| Molecular Weight (g/mol) | 130.14 |
| MDL Number | MFCD00014650 |
| SMILES | CC1(COC(=O)OC1)C |
| Synonym | neopentylene carbonate,2,2-dimethyltrimethylene carbonate,5,5-dimethyl-1,3-diox-2-one,acmc-1adx1,3-nitro-5-chlorobenzenesulfonamide,5,5-dimethyltrimethylene carbonate,5,5-dimethyl-1,3-dioxane-2-one,5,5-dimethyl-2-oxo-1,3-dioxane,1,3-dioxan-2-one,5,5-dimethyl,5,5-dimethyl-1,3 dioxan-2-one |
| IUPAC Name | 5,5-dimethyl-1,3-dioxan-2-one |
| InChI Key | JRFXQKZEGILCCO-UHFFFAOYSA-N |
| Molecular Formula | C6H10O3 |
| CAS | 3-2-3988 |
|---|
2,3-Dihydroxyquinoxaline, 98%
CAS: 15804-19-0 Molecular Formula: C8H6N2O2 Molecular Weight (g/mol): 162.148 MDL Number: MFCD00006723 InChI Key: ABJFBJGGLJVMAQ-UHFFFAOYSA-N Synonym: 2,3-dihydroxyquinoxaline,quinoxaline-2,3-diol,quinoxaline-2,3 1h,4h-dione,2,3-quinoxalinediol,1,4-dihydro-2,3-quinoxalinedione,2,3-quinoxalinedione, 1,4-dihydro,usaf ek-6232,2,3 1h,4h-quinoxalinedione,quinoxaline, 2,3-dihydroxy,unii-apo55iz9e1 PubChem CID: 27491 IUPAC Name: 1,4-dihydroquinoxaline-2,3-dione SMILES: C1=CC=C2C(=C1)NC(=O)C(=O)N2
| PubChem CID | 27491 |
|---|---|
| CAS | 15804-19-0 |
| Molecular Weight (g/mol) | 162.148 |
| MDL Number | MFCD00006723 |
| SMILES | C1=CC=C2C(=C1)NC(=O)C(=O)N2 |
| Synonym | 2,3-dihydroxyquinoxaline,quinoxaline-2,3-diol,quinoxaline-2,3 1h,4h-dione,2,3-quinoxalinediol,1,4-dihydro-2,3-quinoxalinedione,2,3-quinoxalinedione, 1,4-dihydro,usaf ek-6232,2,3 1h,4h-quinoxalinedione,quinoxaline, 2,3-dihydroxy,unii-apo55iz9e1 |
| IUPAC Name | 1,4-dihydroquinoxaline-2,3-dione |
| InChI Key | ABJFBJGGLJVMAQ-UHFFFAOYSA-N |
| Molecular Formula | C8H6N2O2 |
4-Dimethylaminoazobenzene-4'-sulfonyl chloride, 98+%
CAS: 56512-49-3 Molecular Formula: C14H14ClN3O2S Molecular Weight (g/mol): 323.80 MDL Number: MFCD00007444 InChI Key: VTVWTPGLLAELLI-UHFFFAOYSA-N Synonym: dabsyl chloride,4-dimethylaminoazobenzene-4'-sulfonyl chloride,4-dimethylamino azobenzene-4'-sulfonyl chloride,p-dimethylaminoazobenzene-4-sulfonyl chloride,p-p-dimethylamino phenyl azo benzenesulfonyl chloride,benzenesulfonyl chloride, 4-4-dimethylamino phenyl azo,benzenesulfonyl chloride, p-p-dimethylamino phenyl azo,4-n,n-dimethylaminoazobenzene-4'-sulfonyl chloride,p-4-dimethylamino phenyl azo benzenesulphonyl chloride PubChem CID: 91660 IUPAC Name: 4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonyl chloride SMILES: CN(C)C1=CC=C(C=C1)N=NC1=CC=C(C=C1)S(Cl)(=O)=O
| PubChem CID | 91660 |
|---|---|
| CAS | 56512-49-3 |
| Molecular Weight (g/mol) | 323.80 |
| MDL Number | MFCD00007444 |
| SMILES | CN(C)C1=CC=C(C=C1)N=NC1=CC=C(C=C1)S(Cl)(=O)=O |
| Synonym | dabsyl chloride,4-dimethylaminoazobenzene-4'-sulfonyl chloride,4-dimethylamino azobenzene-4'-sulfonyl chloride,p-dimethylaminoazobenzene-4-sulfonyl chloride,p-p-dimethylamino phenyl azo benzenesulfonyl chloride,benzenesulfonyl chloride, 4-4-dimethylamino phenyl azo,benzenesulfonyl chloride, p-p-dimethylamino phenyl azo,4-n,n-dimethylaminoazobenzene-4'-sulfonyl chloride,p-4-dimethylamino phenyl azo benzenesulphonyl chloride |
| IUPAC Name | 4-[[4-(dimethylamino)phenyl]diazenyl]benzenesulfonyl chloride |
| InChI Key | VTVWTPGLLAELLI-UHFFFAOYSA-N |
| Molecular Formula | C14H14ClN3O2S |
2-Amino-4-chloro-6-methylpyrimidine, 98%
CAS: 5600-21-5 Molecular Formula: C5H6ClN3 Molecular Weight (g/mol): 143.574 MDL Number: MFCD00006091 InChI Key: NPTGVVKPLWFPPX-UHFFFAOYSA-N Synonym: 2-amino-4-chloro-6-methylpyrimidine,am inhibitor,am pesticide,prepn. am,4-chloro-6-methyl-2-pyrimidinamine,4-chloro-6-methylpyrimidin-2-ylamine,2-pyrimidinamine, 4-chloro-6-methyl,am nitrification inhibitor,pyrimidine, 2-amino-4-chloro-6-methyl,2-amino-6-chloro-4-methylpyrimidine PubChem CID: 21810 ChEBI: CHEBI:58960 IUPAC Name: 4-chloro-6-methylpyrimidin-2-amine SMILES: CC1=CC(=NC(=N1)N)Cl
| PubChem CID | 21810 |
|---|---|
| CAS | 5600-21-5 |
| Molecular Weight (g/mol) | 143.574 |
| ChEBI | CHEBI:58960 |
| MDL Number | MFCD00006091 |
| SMILES | CC1=CC(=NC(=N1)N)Cl |
| Synonym | 2-amino-4-chloro-6-methylpyrimidine,am inhibitor,am pesticide,prepn. am,4-chloro-6-methyl-2-pyrimidinamine,4-chloro-6-methylpyrimidin-2-ylamine,2-pyrimidinamine, 4-chloro-6-methyl,am nitrification inhibitor,pyrimidine, 2-amino-4-chloro-6-methyl,2-amino-6-chloro-4-methylpyrimidine |
| IUPAC Name | 4-chloro-6-methylpyrimidin-2-amine |
| InChI Key | NPTGVVKPLWFPPX-UHFFFAOYSA-N |
| Molecular Formula | C5H6ClN3 |
(-)-Cotinine, 98%
CAS: 486-56-6 Molecular Formula: C10H12N2O Molecular Weight (g/mol): 176.219 MDL Number: MFCD00077696 InChI Key: UIKROCXWUNQSPJ-VIFPVBQESA-N Synonym: cotinine,--cotinine,cotinina,cotininum,cotinine-,s-cotinine,s---cotinine,unii-k5161x06ll,s-1-methyl-5-3-pyridinyl-2-pyrrolidinone,2-pyrrolidinone, 1-methyl-5-3-pyridinyl-, 5s PubChem CID: 854019 ChEBI: CHEBI:68641 IUPAC Name: (5S)-1-methyl-5-pyridin-3-ylpyrrolidin-2-one SMILES: CN1C(CCC1=O)C2=CN=CC=C2
| PubChem CID | 854019 |
|---|---|
| CAS | 486-56-6 |
| Molecular Weight (g/mol) | 176.219 |
| ChEBI | CHEBI:68641 |
| MDL Number | MFCD00077696 |
| SMILES | CN1C(CCC1=O)C2=CN=CC=C2 |
| Synonym | cotinine,--cotinine,cotinina,cotininum,cotinine-,s-cotinine,s---cotinine,unii-k5161x06ll,s-1-methyl-5-3-pyridinyl-2-pyrrolidinone,2-pyrrolidinone, 1-methyl-5-3-pyridinyl-, 5s |
| IUPAC Name | (5S)-1-methyl-5-pyridin-3-ylpyrrolidin-2-one |
| InChI Key | UIKROCXWUNQSPJ-VIFPVBQESA-N |
| Molecular Formula | C10H12N2O |