Organonitrogen Compounds
Filtered Search Results
MetFormin hydrochloride, 98%, For HPLC analysis, MP Biomedicals™
CAS: 1115-70-4 Molecular Formula: C4H12ClN5 Molecular Weight (g/mol): 165.63 MDL Number: MFCD00012582 InChI Key: OETHQSJEHLVLGH-UHFFFAOYSA-N Synonym: metformin hydrochloride,1,1-dimethylbiguanide hydrochloride,metformin hcl,glucophage,riomet,diabefagos,meguan,metformin monohydrochloride,benofomin,denkaform PubChem CID: 14219 IUPAC Name: hydrogen 1-[(diaminomethylidene)amino]-N,N-dimethylmethanimidamide chloride SMILES: [H+].[Cl-].CN(C)C(=N)N=C(N)N
| PubChem CID | 14219 |
|---|---|
| CAS | 1115-70-4 |
| Molecular Weight (g/mol) | 165.63 |
| MDL Number | MFCD00012582 |
| SMILES | [H+].[Cl-].CN(C)C(=N)N=C(N)N |
| Synonym | metformin hydrochloride,1,1-dimethylbiguanide hydrochloride,metformin hcl,glucophage,riomet,diabefagos,meguan,metformin monohydrochloride,benofomin,denkaform |
| IUPAC Name | hydrogen 1-[(diaminomethylidene)amino]-N,N-dimethylmethanimidamide chloride |
| InChI Key | OETHQSJEHLVLGH-UHFFFAOYSA-N |
| Molecular Formula | C4H12ClN5 |
DETA NONOate, 95%
CAS: 146724-94-9 Molecular Formula: C4H13N5O2 Molecular Weight (g/mol): 163.2 MDL Number: MFCD00278808 InChI Key: HMRRJTFDJAVRMR-UHFFFAOYSA-N Synonym: deta nonoate,noc-18,deta-nonoate,diethylenetriamine nonoate,2,2'-hydroxynitrosohydrazino bis-ethanamine,aeed/no,1,1-bis 2-aminoethyl-2-hydroxy-3-oxotriazane,3,3-bis aminoethyl-1-hydroxy-2-oxo-1-triazene,detanonoate,1-hydroxy-2-oxo-3,3-bis 3-aminoethyl-1-triazene PubChem CID: 1606 ChEBI: CHEBI:50154 IUPAC Name: N-[bis(2-aminoethyl)amino]-N-hydroxynitrous amide SMILES: C(CN(CCN)N(N=O)O)N
| PubChem CID | 1606 |
|---|---|
| CAS | 146724-94-9 |
| Molecular Weight (g/mol) | 163.2 |
| ChEBI | CHEBI:50154 |
| MDL Number | MFCD00278808 |
| SMILES | C(CN(CCN)N(N=O)O)N |
| Synonym | deta nonoate,noc-18,deta-nonoate,diethylenetriamine nonoate,2,2'-hydroxynitrosohydrazino bis-ethanamine,aeed/no,1,1-bis 2-aminoethyl-2-hydroxy-3-oxotriazane,3,3-bis aminoethyl-1-hydroxy-2-oxo-1-triazene,detanonoate,1-hydroxy-2-oxo-3,3-bis 3-aminoethyl-1-triazene |
| IUPAC Name | N-[bis(2-aminoethyl)amino]-N-hydroxynitrous amide |
| InChI Key | HMRRJTFDJAVRMR-UHFFFAOYSA-N |
| Molecular Formula | C4H13N5O2 |
Dimethylglyoxime, 99%
CAS: 95-45-4 Molecular Formula: C4H8N2O2 Molecular Weight (g/mol): 116.12 MDL Number: MFCD00002117 InChI Key: JGUQDUKBUKFFRO-GGWOSOGESA-N Synonym: biacetyl dioxime,dimethylglyoxime,diacetyldioxime,2,3-butanedione dioxime,diacetyl dioxime,2,3-diisonitrosobutane,biacetyl, dioxime,chugaev's reagent,nsc 9,unii-2971mft1ky PubChem CID: 5356010 IUPAC Name: N-[(E)-3-nitrosobut-2-en-2-yl]hydroxylamine SMILES: C\C(=N/O)\C(\C)=N\O
| PubChem CID | 5356010 |
|---|---|
| CAS | 95-45-4 |
| Molecular Weight (g/mol) | 116.12 |
| MDL Number | MFCD00002117 |
| SMILES | C\C(=N/O)\C(\C)=N\O |
| Synonym | biacetyl dioxime,dimethylglyoxime,diacetyldioxime,2,3-butanedione dioxime,diacetyl dioxime,2,3-diisonitrosobutane,biacetyl, dioxime,chugaev's reagent,nsc 9,unii-2971mft1ky |
| IUPAC Name | N-[(E)-3-nitrosobut-2-en-2-yl]hydroxylamine |
| InChI Key | JGUQDUKBUKFFRO-GGWOSOGESA-N |
| Molecular Formula | C4H8N2O2 |
Tetramethylammonium chloride, 98+%
CAS: 75-57-0 Molecular Formula: C4H12ClN Molecular Weight (g/mol): 109.6 MDL Number: MFCD00011628 InChI Key: OKIZCWYLBDKLSU-UHFFFAOYSA-M Synonym: tetramethylammonium chloride,tetramethyl ammonium chloride,tetramine chloride,usaf an-8,n,n,n-trimethylmethanaminium chloride,methanaminium, n,n,n-trimethyl-, chloride,unii-dcq9s88703,tetramethylazanium chloride,ammonium, tetramethyl-, chloride,tetramethylammonium chloride tmacl PubChem CID: 6379 ChEBI: CHEBI:7070 IUPAC Name: tetramethylazanium;chloride SMILES: C[N+](C)(C)C.[Cl-]
| PubChem CID | 6379 |
|---|---|
| CAS | 75-57-0 |
| Molecular Weight (g/mol) | 109.6 |
| ChEBI | CHEBI:7070 |
| MDL Number | MFCD00011628 |
| SMILES | C[N+](C)(C)C.[Cl-] |
| Synonym | tetramethylammonium chloride,tetramethyl ammonium chloride,tetramine chloride,usaf an-8,n,n,n-trimethylmethanaminium chloride,methanaminium, n,n,n-trimethyl-, chloride,unii-dcq9s88703,tetramethylazanium chloride,ammonium, tetramethyl-, chloride,tetramethylammonium chloride tmacl |
| IUPAC Name | tetramethylazanium;chloride |
| InChI Key | OKIZCWYLBDKLSU-UHFFFAOYSA-M |
| Molecular Formula | C4H12ClN |
1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide, 97%
CAS: 1892-57-5 Molecular Formula: C8H17N3 Molecular Weight (g/mol): 155.24 InChI Key: LMDZBCPBFSXMTL-UHFFFAOYSA-N Synonym: 1-3-dimethylaminopropyl-3-ethylcarbodiimide,edac,1-ethyl-3-3-dimethylaminopropyl carbodiimide,n1-ethylimino methylene-n3,n3-dimethylpropane-1,3-diamine,unii-rj5ozg6i4a,edci,1,3-propanediamine, n'-ethylcarbonimidoyl-n,n-dimethyl,n-3-dimethylaminopropyl-n'-ethylcarbodiimide,rj5ozg6i4a,ethyldimethylaminopropyl carbodiimide PubChem CID: 15908 IUPAC Name: 3-(ethyliminomethylideneamino)-N,N-dimethylpropan-1-amine SMILES: CCN=C=NCCCN(C)C
| PubChem CID | 15908 |
|---|---|
| CAS | 1892-57-5 |
| Molecular Weight (g/mol) | 155.24 |
| SMILES | CCN=C=NCCCN(C)C |
| Synonym | 1-3-dimethylaminopropyl-3-ethylcarbodiimide,edac,1-ethyl-3-3-dimethylaminopropyl carbodiimide,n1-ethylimino methylene-n3,n3-dimethylpropane-1,3-diamine,unii-rj5ozg6i4a,edci,1,3-propanediamine, n'-ethylcarbonimidoyl-n,n-dimethyl,n-3-dimethylaminopropyl-n'-ethylcarbodiimide,rj5ozg6i4a,ethyldimethylaminopropyl carbodiimide |
| IUPAC Name | 3-(ethyliminomethylideneamino)-N,N-dimethylpropan-1-amine |
| InChI Key | LMDZBCPBFSXMTL-UHFFFAOYSA-N |
| Molecular Formula | C8H17N3 |
Isophorone diisocyanate, mixture of isomers, 98%
CAS: 4098-71-9 Molecular Formula: C12H18N2O2 Molecular Weight (g/mol): 222.29 MDL Number: MFCD00064956 InChI Key: NIMLQBUJDJZYEJ-UHFFFAOYNA-N Synonym: isophorone diisocyanate,ipdi,isophorone diamine diisocyanate,5-isocyanato-1-isocyanatomethyl-1,3,3-trimethylcyclohexane,3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate,cyclohexane, 5-isocyanato-1-isocyanatomethyl-1,3,3-trimethyl,3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate,ccris 6252,isocyanic acid, methylene 3,5,5-trimethyl-3,1-cyclohexylene ester,isophorone diisocyanate diisocyanates PubChem CID: 169132 ChEBI: CHEBI:53214 IUPAC Name: 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane SMILES: CC1(C)CC(CC(C)(CN=C=O)C1)N=C=O
| PubChem CID | 169132 |
|---|---|
| CAS | 4098-71-9 |
| Molecular Weight (g/mol) | 222.29 |
| ChEBI | CHEBI:53214 |
| MDL Number | MFCD00064956 |
| SMILES | CC1(C)CC(CC(C)(CN=C=O)C1)N=C=O |
| Synonym | isophorone diisocyanate,ipdi,isophorone diamine diisocyanate,5-isocyanato-1-isocyanatomethyl-1,3,3-trimethylcyclohexane,3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate,cyclohexane, 5-isocyanato-1-isocyanatomethyl-1,3,3-trimethyl,3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanate,ccris 6252,isocyanic acid, methylene 3,5,5-trimethyl-3,1-cyclohexylene ester,isophorone diisocyanate diisocyanates |
| IUPAC Name | 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane |
| InChI Key | NIMLQBUJDJZYEJ-UHFFFAOYNA-N |
| Molecular Formula | C12H18N2O2 |
3-Hydroxytyramine Hydrochloride, 99%
CAS: 62-31-7 Molecular Formula: C8H12ClNO2 Molecular Weight (g/mol): 189.64 MDL Number: MFCD00012898 InChI Key: CTENFNNZBMHDDG-UHFFFAOYSA-N Synonym: dopamine hydrochloride,3-hydroxytyramine hydrochloride,dopamine hcl,4-2-aminoethyl benzene-1,2-diol hydrochloride,intropin,dopastat,revivan,dynatra,3,4-dihydroxyphenethylamine hydrochloride,cardiosteril PubChem CID: 65340 IUPAC Name: 4-(2-aminoethyl)benzene-1,2-diol;hydrochloride SMILES: [H+].[Cl-].NCCC1=CC=C(O)C(O)=C1
| PubChem CID | 65340 |
|---|---|
| CAS | 62-31-7 |
| Molecular Weight (g/mol) | 189.64 |
| MDL Number | MFCD00012898 |
| SMILES | [H+].[Cl-].NCCC1=CC=C(O)C(O)=C1 |
| Synonym | dopamine hydrochloride,3-hydroxytyramine hydrochloride,dopamine hcl,4-2-aminoethyl benzene-1,2-diol hydrochloride,intropin,dopastat,revivan,dynatra,3,4-dihydroxyphenethylamine hydrochloride,cardiosteril |
| IUPAC Name | 4-(2-aminoethyl)benzene-1,2-diol;hydrochloride |
| InChI Key | CTENFNNZBMHDDG-UHFFFAOYSA-N |
| Molecular Formula | C8H12ClNO2 |
Tetramethylammonium hydroxide, 2.38% w/w aq. soln., Electronic Grade, 99.9999% (metals basis)
CAS: 75-59-2 Molecular Formula: C4H13NO Molecular Weight (g/mol): 91.154 MDL Number: MFCD00008280 InChI Key: WGTYBPLFGIVFAS-UHFFFAOYSA-M Synonym: tetramethylammonium hydroxide,tmah,hydroxyde de tetramethylammonium,nmw-w,nmd 3,tetramethyl ammonium hydroxide,unii-5gkp7317q2,ammonium, tetramethyl-, hydroxide,methanaminium, n,n,n-trimethyl-, hydroxide,tetramethylammoniumhydroxide PubChem CID: 60966 IUPAC Name: tetramethylazanium;hydroxide SMILES: C[N+](C)(C)C.[OH-]
| PubChem CID | 60966 |
|---|---|
| CAS | 75-59-2 |
| Molecular Weight (g/mol) | 91.154 |
| MDL Number | MFCD00008280 |
| SMILES | C[N+](C)(C)C.[OH-] |
| Synonym | tetramethylammonium hydroxide,tmah,hydroxyde de tetramethylammonium,nmw-w,nmd 3,tetramethyl ammonium hydroxide,unii-5gkp7317q2,ammonium, tetramethyl-, hydroxide,methanaminium, n,n,n-trimethyl-, hydroxide,tetramethylammoniumhydroxide |
| IUPAC Name | tetramethylazanium;hydroxide |
| InChI Key | WGTYBPLFGIVFAS-UHFFFAOYSA-M |
| Molecular Formula | C4H13NO |
N-Lauryldiethanolamine 95.0+%, TCI America™
CAS: 1541-67-9 Molecular Formula: C16H34NO2 Molecular Weight (g/mol): 272.45 MDL Number: MFCD00059002 InChI Key: ASGZLXKBMOBPBV-UHFFFAOYSA-N PubChem CID: 352309 IUPAC Name: dodecylidenebis(2-hydroxyethyl)azanium SMILES: CCCCCCCCCCCC=[N+](CCO)CCO
| PubChem CID | 352309 |
|---|---|
| CAS | 1541-67-9 |
| Molecular Weight (g/mol) | 272.45 |
| MDL Number | MFCD00059002 |
| SMILES | CCCCCCCCCCCC=[N+](CCO)CCO |
| IUPAC Name | dodecylidenebis(2-hydroxyethyl)azanium |
| InChI Key | ASGZLXKBMOBPBV-UHFFFAOYSA-N |
| Molecular Formula | C16H34NO2 |
Acetone oxime, 98%
CAS: 127-06-0 Molecular Formula: C3H7NO Molecular Weight (g/mol): 73.10 MDL Number: MFCD00002118 InChI Key: PXAJQJMDEXJWFB-UHFFFAOYSA-N Synonym: acetone oxime,acetoxime,propan-2-one oxime,2-propanone, oxime,2-propanone oxime,acetonoxime,acetone, oxime,beta-isonitrosopropane,acetoneoxime,ccris 5 PubChem CID: 67180 ChEBI: CHEBI:15349 IUPAC Name: N-propan-2-ylidenehydroxylamine SMILES: CC(C)=NO
| PubChem CID | 67180 |
|---|---|
| CAS | 127-06-0 |
| Molecular Weight (g/mol) | 73.10 |
| ChEBI | CHEBI:15349 |
| MDL Number | MFCD00002118 |
| SMILES | CC(C)=NO |
| Synonym | acetone oxime,acetoxime,propan-2-one oxime,2-propanone, oxime,2-propanone oxime,acetonoxime,acetone, oxime,beta-isonitrosopropane,acetoneoxime,ccris 5 |
| IUPAC Name | N-propan-2-ylidenehydroxylamine |
| InChI Key | PXAJQJMDEXJWFB-UHFFFAOYSA-N |
| Molecular Formula | C3H7NO |
Triethylamine, 99+%
CAS: 121-44-8 Molecular Formula: C6H15N Molecular Weight (g/mol): 101.193 MDL Number: MFCD00009051 InChI Key: ZMANZCXQSJIPKH-UHFFFAOYSA-N Synonym: triethylamine,ethanamine, n,n-diethyl,diethylamino ethane,triaethylamin,triethylamin,trietilamina,triethyl amine,n,n,n-triethylamine,net3,diethylaminoethane PubChem CID: 8471 ChEBI: CHEBI:35026 IUPAC Name: N,N-diethylethanamine SMILES: CCN(CC)CC
| PubChem CID | 8471 |
|---|---|
| CAS | 121-44-8 |
| Molecular Weight (g/mol) | 101.193 |
| ChEBI | CHEBI:35026 |
| MDL Number | MFCD00009051 |
| SMILES | CCN(CC)CC |
| Synonym | triethylamine,ethanamine, n,n-diethyl,diethylamino ethane,triaethylamin,triethylamin,trietilamina,triethyl amine,n,n,n-triethylamine,net3,diethylaminoethane |
| IUPAC Name | N,N-diethylethanamine |
| InChI Key | ZMANZCXQSJIPKH-UHFFFAOYSA-N |
| Molecular Formula | C6H15N |
N,N,N',N'-Tetrakis(2-hydroxypropyl)ethylenediamine, 99%
CAS: 102-60-3 Molecular Formula: C14H32N2O4 Molecular Weight (g/mol): 292.42 MDL Number: MFCD00004534 InChI Key: NSOXQYCFHDMMGV-UHFFFAOYSA-N Synonym: quadrol,edetol,n,n,n',n'-tetrakis 2-hydroxypropyl ethylenediamine,entprol,adeka quadrol,quadrol l,neutrol te,1,1',1,1'-ethylenedinitrilo tetra-2-propanol,edetolum latin,2-propanol, 1,1',1,1'-1,2-ethanediyldinitrilo tetrakis PubChem CID: 7615 IUPAC Name: 1-[2-[bis(2-hydroxypropyl)amino]ethyl-(2-hydroxypropyl)amino]propan-2-ol SMILES: CC(CN(CCN(CC(C)O)CC(C)O)CC(C)O)O
| PubChem CID | 7615 |
|---|---|
| CAS | 102-60-3 |
| Molecular Weight (g/mol) | 292.42 |
| MDL Number | MFCD00004534 |
| SMILES | CC(CN(CCN(CC(C)O)CC(C)O)CC(C)O)O |
| Synonym | quadrol,edetol,n,n,n',n'-tetrakis 2-hydroxypropyl ethylenediamine,entprol,adeka quadrol,quadrol l,neutrol te,1,1',1,1'-ethylenedinitrilo tetra-2-propanol,edetolum latin,2-propanol, 1,1',1,1'-1,2-ethanediyldinitrilo tetrakis |
| IUPAC Name | 1-[2-[bis(2-hydroxypropyl)amino]ethyl-(2-hydroxypropyl)amino]propan-2-ol |
| InChI Key | NSOXQYCFHDMMGV-UHFFFAOYSA-N |
| Molecular Formula | C14H32N2O4 |
Spermine tetrahydrochloride, 99%
CAS: 306-67-2 Molecular Formula: C10H30Cl4N4 Molecular Weight (g/mol): 348.18 MDL Number: MFCD00012914 InChI Key: XLDKUDAXZWHPFH-UHFFFAOYSA-N Synonym: spermine tetrahydrochloride,n,n'-bis 3-aminopropyl-1,4-butanediamine tetrahydrochloride,gerontine tetrahydrochloride,neuridine tetrahydrochloride,n1,n1'-butane-1,4-diyl bis propane-1,3-diamine tetrahydrochloride,musculamine tetrahydrochloride,geontine tetrahydrochloride,spermine hcl,1,4-butanediamine, n,n'-bis 3-aminopropyl-, tetrahydrochloride,spermine, tetrahydrochloride PubChem CID: 9384 IUPAC Name: N,N'-bis(3-aminopropyl)butane-1,4-diamine;tetrahydrochloride SMILES: [H+].[H+].[H+].[H+].[Cl-].[Cl-].[Cl-].[Cl-].NCCCNCCCCNCCCN
| PubChem CID | 9384 |
|---|---|
| CAS | 306-67-2 |
| Molecular Weight (g/mol) | 348.18 |
| MDL Number | MFCD00012914 |
| SMILES | [H+].[H+].[H+].[H+].[Cl-].[Cl-].[Cl-].[Cl-].NCCCNCCCCNCCCN |
| Synonym | spermine tetrahydrochloride,n,n'-bis 3-aminopropyl-1,4-butanediamine tetrahydrochloride,gerontine tetrahydrochloride,neuridine tetrahydrochloride,n1,n1'-butane-1,4-diyl bis propane-1,3-diamine tetrahydrochloride,musculamine tetrahydrochloride,geontine tetrahydrochloride,spermine hcl,1,4-butanediamine, n,n'-bis 3-aminopropyl-, tetrahydrochloride,spermine, tetrahydrochloride |
| IUPAC Name | N,N'-bis(3-aminopropyl)butane-1,4-diamine;tetrahydrochloride |
| InChI Key | XLDKUDAXZWHPFH-UHFFFAOYSA-N |
| Molecular Formula | C10H30Cl4N4 |
Triethylamine trihydrofluoride, ca. 37% HF
CAS: 73602-61-6 Molecular Formula: C6H15N·3HF Molecular Weight (g/mol): 161.21 MDL Number: MFCD00043294 InChI Key: IKGLACJFEHSFNN-UHFFFAOYSA-N Synonym: triethylamine trihydrofluoride,n,n-diethylethanamine trihydrofluoride,triethylammonium fluoride,ethanamine, n,n-diethyl-, trihydrofluoride,triethylamine trishydrofluoride,hydrogen fluoride in triethylamine,hf in triethylamine,triethylaminetrihydrofluoride,hydrogen fluoride triethylamine,ethanamine, n,n-diethyl-, hydrofluoride 1:3 PubChem CID: 175505 IUPAC Name: N,N-diethylethanamine;trihydrofluoride SMILES: CCN(CC)CC.F.F.F
| PubChem CID | 175505 |
|---|---|
| CAS | 73602-61-6 |
| Molecular Weight (g/mol) | 161.21 |
| MDL Number | MFCD00043294 |
| SMILES | CCN(CC)CC.F.F.F |
| Synonym | triethylamine trihydrofluoride,n,n-diethylethanamine trihydrofluoride,triethylammonium fluoride,ethanamine, n,n-diethyl-, trihydrofluoride,triethylamine trishydrofluoride,hydrogen fluoride in triethylamine,hf in triethylamine,triethylaminetrihydrofluoride,hydrogen fluoride triethylamine,ethanamine, n,n-diethyl-, hydrofluoride 1:3 |
| IUPAC Name | N,N-diethylethanamine;trihydrofluoride |
| InChI Key | IKGLACJFEHSFNN-UHFFFAOYSA-N |
| Molecular Formula | C6H15N·3HF |
Ethyl isonitrosocyanoacetate, 97%
CAS: 3849-21-6 Molecular Formula: C5H6N2O3 Molecular Weight (g/mol): 142.114 MDL Number: MFCD00000625 InChI Key: LCFXLZAXGXOXAP-QPJJXVBHSA-N Synonym: ethyl cyanoglyoxylate-2-oxime,ethyl isonitrosocyanoacetate,ethyl cyano hydroxyimino acetate,ethyl hydroxyimino cyanoacetate,ethyl 2-cyano-2-hydroxyimino acetate,ethyl cyano hydroxyimino formate,ethyl oximinocyanoacetate,oxyma,e-ethyl 2-cyano-2-hydroxyimino acetate,acetic acid, cyano hydroxyimino-, ethyl ester PubChem CID: 6400537 IUPAC Name: ethyl (2E)-2-cyano-2-hydroxyiminoacetate SMILES: CCOC(=O)C(=NO)C#N
| PubChem CID | 6400537 |
|---|---|
| CAS | 3849-21-6 |
| Molecular Weight (g/mol) | 142.114 |
| MDL Number | MFCD00000625 |
| SMILES | CCOC(=O)C(=NO)C#N |
| Synonym | ethyl cyanoglyoxylate-2-oxime,ethyl isonitrosocyanoacetate,ethyl cyano hydroxyimino acetate,ethyl hydroxyimino cyanoacetate,ethyl 2-cyano-2-hydroxyimino acetate,ethyl cyano hydroxyimino formate,ethyl oximinocyanoacetate,oxyma,e-ethyl 2-cyano-2-hydroxyimino acetate,acetic acid, cyano hydroxyimino-, ethyl ester |
| IUPAC Name | ethyl (2E)-2-cyano-2-hydroxyiminoacetate |
| InChI Key | LCFXLZAXGXOXAP-QPJJXVBHSA-N |
| Molecular Formula | C5H6N2O3 |