Amidines
Amidines
- (3)
- (4)
- (6)
- (2)
- (2)
- (6)
- (2)
- (1)
- (3)
- (3)
- (3)
- (2)
- (6)
- (4)
- (2)
- (6)
- (2)
- (8)
- (6)
- (13)
- (1)
- (2)
- (6)
- (6)
- (2)
- (9)
- (3)
- (3)
- (2)
- (1)
- (2)
- (2)
- (1)
- (2)
- (2)
- (2)
- (2)
- (2)
- (2)
- (5)
- (2)
- (3)
- (2)
- (2)
- (1)
- (4)
- (3)
- (1)
- (2)
- (1)
- (2)
- (3)
- (3)
- (2)
- (2)
- (2)
- (2)
- (3)
- (2)
- (2)
- (3)
- (4)
- (1)
- (3)
- (2)
- (1)
- (2)
- (2)
- (2)
- (3)
- (3)
- (59)
- (26)
- (3)
- (13)
- (2)
- (28)
- (2)
- (9)
- (1)
- (50)
- (5)
- (5)
- (8)
- (1)
- (3)
- (1)
- (4)
- (4)
- (6)
- (4)
- (14)
- (2)
- (9)
- (105)
- (24)
- (7)
- (19)
- (2)
- (4)
- (1)
- (2)
- (15)
- (6)
- (3)
- (3)
- (2)
- (2)
- (1)
- (3)
- (4)
- (3)
- (3)
- (1)
Résultats de la recherche filtrée
Hydrate de chlorhydrate de benzamidine, 98 %, Thermo Scientific Chemicals
CAS: 206752-36-5 Formule moléculaire: C7H9ClN2 Poids moléculaire (g/mol): 156.61 Numéro MDL: MFCD00066285 Clé InChI: LZCZIHQBSCVGRD-UHFFFAOYSA-N Synonyme: benzamidine hydrochloride hydrate,benzenecarboximidamide hydrochloride hydrate,benzamidine hydrate hydrochloride,benzamidinium chloride,benzamidinehydrochloridehydrate,amidinobenzene hydrochloride,benzamidine hydrochloride monohydrate,acmc-20a6bw,ksc491m3d,benzamidin hydrochloride hydrate CID PubChem: 16219042 Nom IUPAC: [amino(phenyl)methylidene]azanium SMILES: Cl.NC(=N)C1=CC=CC=C1
Toute commande passée avant 14h sera expédiée dès aujourd'hui Toute commande passée après 14h sera expédiée dès demain
En savoir plus
Poids moléculaire (g/mol) | 156.61 |
---|---|
Synonyme | benzamidine hydrochloride hydrate,benzenecarboximidamide hydrochloride hydrate,benzamidine hydrate hydrochloride,benzamidinium chloride,benzamidinehydrochloridehydrate,amidinobenzene hydrochloride,benzamidine hydrochloride monohydrate,acmc-20a6bw,ksc491m3d,benzamidin hydrochloride hydrate |
Numéro MDL | MFCD00066285 |
CAS | 206752-36-5 |
CID PubChem | 16219042 |
Nom IUPAC | [amino(phenyl)methylidene]azanium |
Clé InChI | LZCZIHQBSCVGRD-UHFFFAOYSA-N |
SMILES | Cl.NC(=N)C1=CC=CC=C1 |
Formule moléculaire | C7H9ClN2 |
Chlorhydrate de benzamidine, 99 %, Thermo Scientific Chemicals
CAS: 1670-14- Formule moléculaire: C7H9ClN2 Poids moléculaire (g/mol): 156.61 Numéro MDL: MFCD00066285 Clé InChI: LZCZIHQBSCVGRD-UHFFFAOYSA-N Synonyme: benzamidine hydrochloride hydrate,benzenecarboximidamide hydrochloride hydrate,benzamidine hydrate hydrochloride,benzamidinium chloride,benzamidinehydrochloridehydrate,amidinobenzene hydrochloride,benzamidine hydrochloride monohydrate,acmc-20a6bw,ksc491m3d,benzamidin hydrochloride hydrate CID PubChem: 16219042 SMILES: Cl.NC(=N)C1=CC=CC=C1
Poids moléculaire (g/mol) | 156.61 |
---|---|
Synonyme | benzamidine hydrochloride hydrate,benzenecarboximidamide hydrochloride hydrate,benzamidine hydrate hydrochloride,benzamidinium chloride,benzamidinehydrochloridehydrate,amidinobenzene hydrochloride,benzamidine hydrochloride monohydrate,acmc-20a6bw,ksc491m3d,benzamidin hydrochloride hydrate |
Numéro MDL | MFCD00066285 |
CAS | 1670-14- |
CID PubChem | 16219042 |
Clé InChI | LZCZIHQBSCVGRD-UHFFFAOYSA-N |
SMILES | Cl.NC(=N)C1=CC=CC=C1 |
Formule moléculaire | C7H9ClN2 |
2-Phényl-2-imidazoline, 98+ %, Thermo Scientific™
CAS: 936-49-2 Formule moléculaire: C9H10N2 Poids moléculaire (g/mol): 146.19 Numéro MDL: MFCD00005180 Clé InChI: BKCCAYLNRIRKDJ-UHFFFAOYSA-N Synonyme: 2-phenyl-2-imidazoline,2-phenylimidazoline,1h-imidazole, 4,5-dihydro-2-phenyl,2-imidazoline, 2-phenyl,4,5-dihydro-2-phenyl-1h-imidazole,2-phenyl imidazoline,2-phenyl-2-imidazolin,acmc-209rmt,labotest-bb lt00000058,5-23-06-00425 beilstein handbook reference CID PubChem: 13639 Nom IUPAC: 2-phényl-4,5-dihydro-1H-imidazole SMILES: C1CN=C(N1)C1=CC=CC=C1
Poids moléculaire (g/mol) | 146.19 |
---|---|
Synonyme | 2-phenyl-2-imidazoline,2-phenylimidazoline,1h-imidazole, 4,5-dihydro-2-phenyl,2-imidazoline, 2-phenyl,4,5-dihydro-2-phenyl-1h-imidazole,2-phenyl imidazoline,2-phenyl-2-imidazolin,acmc-209rmt,labotest-bb lt00000058,5-23-06-00425 beilstein handbook reference |
Numéro MDL | MFCD00005180 |
CAS | 936-49-2 |
CID PubChem | 13639 |
Nom IUPAC | 2-phényl-4,5-dihydro-1H-imidazole |
Clé InChI | BKCCAYLNRIRKDJ-UHFFFAOYSA-N |
SMILES | C1CN=C(N1)C1=CC=CC=C1 |
Formule moléculaire | C9H10N2 |
Chlorhydrate 2-(2-chlorophénoxy)d‘éthanimidamide, 97 %, Thermo Scientific™
CAS: 58403-03-5 Formule moléculaire: C8H10Cl2N2O Poids moléculaire (g/mol): 221.08 Numéro MDL: MFCD00173805 Clé InChI: WPWKAEFYVGWTAE-UHFFFAOYSA-N Synonyme: 2-2-chlorophenoxy acetamidine hydrochloride,2-2-chlorophenoxy ethanimidamide hydrochloride,2-2-chlorophenoxy acetimidamide hydrochloride,2-2-chloro-phenoxy-acetamidine hydrochloride,2-2-chlorophenoxy ethanimidamide monohydrochloride,2-2-chlorophenoxy acetamide hydrochloride,ethanimidamide, 2-2-chlorophenoxy-, monohydrochloride,2-2-chlorophenoxy ethanamidine, chloride,2-2-chlorophenoxy acetamidine hcl,2-chlorophenoxy ethanimidamide hydrochloride CID PubChem: 2745914 SMILES: [H+].[Cl-].NC(=N)COC1=CC=CC=C1Cl
Poids moléculaire (g/mol) | 221.08 |
---|---|
Synonyme | 2-2-chlorophenoxy acetamidine hydrochloride,2-2-chlorophenoxy ethanimidamide hydrochloride,2-2-chlorophenoxy acetimidamide hydrochloride,2-2-chloro-phenoxy-acetamidine hydrochloride,2-2-chlorophenoxy ethanimidamide monohydrochloride,2-2-chlorophenoxy acetamide hydrochloride,ethanimidamide, 2-2-chlorophenoxy-, monohydrochloride,2-2-chlorophenoxy ethanamidine, chloride,2-2-chlorophenoxy acetamidine hcl,2-chlorophenoxy ethanimidamide hydrochloride |
Numéro MDL | MFCD00173805 |
CAS | 58403-03-5 |
CID PubChem | 2745914 |
Clé InChI | WPWKAEFYVGWTAE-UHFFFAOYSA-N |
SMILES | [H+].[Cl-].NC(=N)COC1=CC=CC=C1Cl |
Formule moléculaire | C8H10Cl2N2O |
Chlorhydrate de 2-méthylpropanimidamide, ≥95 %, Thermo Scientific™
CAS: 22007-68-7 Formule moléculaire: C4H11ClN2 Poids moléculaire (g/mol): 122.596 Numéro MDL: MFCD00173787 Clé InChI: VWXLCWNPSOUPPE-UHFFFAOYSA-N Synonyme: 2-methylpropanimidamide hydrochloride,isobutyrimidamide hydrochloride,isobutyramidine hydrochloride,2-methylpropionamidine hcl,isobutanimidamide hydrochloride,isopropylcarbamidine hydrochloride,2-methylpropionamidine hydrochloride,2-methyl propanimidamide hydrochloride,isobutanimidamide hcl,sothiadhk\up@ CID PubChem: 2782053 Nom IUPAC: 2-méthylpropanimidamide ; chlorhydrate SMILES: CC(C)C(=N)N.Cl
Poids moléculaire (g/mol) | 122.596 |
---|---|
Synonyme | 2-methylpropanimidamide hydrochloride,isobutyrimidamide hydrochloride,isobutyramidine hydrochloride,2-methylpropionamidine hcl,isobutanimidamide hydrochloride,isopropylcarbamidine hydrochloride,2-methylpropionamidine hydrochloride,2-methyl propanimidamide hydrochloride,isobutanimidamide hcl,sothiadhk\up@ |
Numéro MDL | MFCD00173787 |
CAS | 22007-68-7 |
CID PubChem | 2782053 |
Nom IUPAC | 2-méthylpropanimidamide ; chlorhydrate |
Clé InChI | VWXLCWNPSOUPPE-UHFFFAOYSA-N |
SMILES | CC(C)C(=N)N.Cl |
Formule moléculaire | C4H11ClN2 |
Chlorhydrate de 2,2,2-triméthylacétamidine, 98 %, Thermo Scientific Chemicals
CAS: 18202-73-8 Formule moléculaire: C5H13ClN2 Poids moléculaire (g/mol): 136.623 Numéro MDL: MFCD00051988 Clé InChI: ARDGQYVTLGUJII-UHFFFAOYSA-N Synonyme: 2,2-dimethylpropanimidamide hydrochloride,pivalamidine hydrochloride,pivalimidamide hydrochloride,tert-butylcarbamidine hydrochloride,2,2-dimethylpropionamidine hydrochloride,2,2-dimethyl-propionamidine hydrochloride,2,2-dimethylpropionamidine hcl,t-butylcarbamidine hydrochloride,2,2-dimethylpropanamidine hydrochloride,2,2,2-trimethylacetamidine hydrochloride CID PubChem: 2781880 Nom IUPAC: 2,2-diméthylpropanimidamide;chlorhydrate SMILES: CC(C)(C)C(=N)N.Cl
Poids moléculaire (g/mol) | 136.623 |
---|---|
Synonyme | 2,2-dimethylpropanimidamide hydrochloride,pivalamidine hydrochloride,pivalimidamide hydrochloride,tert-butylcarbamidine hydrochloride,2,2-dimethylpropionamidine hydrochloride,2,2-dimethyl-propionamidine hydrochloride,2,2-dimethylpropionamidine hcl,t-butylcarbamidine hydrochloride,2,2-dimethylpropanamidine hydrochloride,2,2,2-trimethylacetamidine hydrochloride |
Numéro MDL | MFCD00051988 |
CAS | 18202-73-8 |
CID PubChem | 2781880 |
Nom IUPAC | 2,2-diméthylpropanimidamide;chlorhydrate |
Clé InChI | ARDGQYVTLGUJII-UHFFFAOYSA-N |
SMILES | CC(C)(C)C(=N)N.Cl |
Formule moléculaire | C5H13ClN2 |
2,3-Dichloro-N‘-hydroxybenzènecarboximidamide, 97 %, Thermo Scientific™
CAS: 261761-55-1 Formule moléculaire: C7H6Cl2N2O Poids moléculaire (g/mol): 205.038 Numéro MDL: MFCD01567248 Clé InChI: OPOPCNCEDLBYPV-UHFFFAOYSA-N Synonyme: 2,3-dichlorobenzamidoxime,hcmhpiwpbbblbbbftocadcpba`,2,3-dichlorophenyl hydroxyimino methylamine,z-2,3-dichloro-n'-hydroxybenzene-1-carboximidamide CID PubChem: 9580371 Nom IUPAC: 2,3-dichloro-N’-hydroxybenzenecarboximidamide SMILES: C1=CC(=C(C(=C1)Cl)Cl)C(=NO)N
Poids moléculaire (g/mol) | 205.038 |
---|---|
Synonyme | 2,3-dichlorobenzamidoxime,hcmhpiwpbbblbbbftocadcpba`,2,3-dichlorophenyl hydroxyimino methylamine,z-2,3-dichloro-n'-hydroxybenzene-1-carboximidamide |
Numéro MDL | MFCD01567248 |
CAS | 261761-55-1 |
CID PubChem | 9580371 |
Nom IUPAC | 2,3-dichloro-N’-hydroxybenzenecarboximidamide |
Clé InChI | OPOPCNCEDLBYPV-UHFFFAOYSA-N |
SMILES | C1=CC(=C(C(=C1)Cl)Cl)C(=NO)N |
Formule moléculaire | C7H6Cl2N2O |
Trifluoroacétamidine, tech. 85 %, Thermo Scientific Chemicals
CAS: 354-37-0 Formule moléculaire: C2H3F3N2 Poids moléculaire (g/mol): 112.06 Numéro MDL: MFCD00041545 Clé InChI: NITMACBPVVUGOJ-UHFFFAOYSA-N Synonyme: trifluoroacetamidine,trifluoroethanimidamide,2,2,2-trifluoroacetamidine,ethanimidamide, 2,2,2-trifluoro,sntljqhjptadtaetp@,trifluoroacetoamidine,trifluoroacetamideine,trifluoro-acetamidine,acmc-20aje4,2,2,2-trifluoroacetoamidine CID PubChem: 2776882 Nom IUPAC: trifluoroethanimidamide SMILES: NC(=N)C(F)(F)F
Poids moléculaire (g/mol) | 112.06 |
---|---|
Synonyme | trifluoroacetamidine,trifluoroethanimidamide,2,2,2-trifluoroacetamidine,ethanimidamide, 2,2,2-trifluoro,sntljqhjptadtaetp@,trifluoroacetoamidine,trifluoroacetamideine,trifluoro-acetamidine,acmc-20aje4,2,2,2-trifluoroacetoamidine |
Numéro MDL | MFCD00041545 |
CAS | 354-37-0 |
CID PubChem | 2776882 |
Nom IUPAC | trifluoroethanimidamide |
Clé InChI | NITMACBPVVUGOJ-UHFFFAOYSA-N |
SMILES | NC(=N)C(F)(F)F |
Formule moléculaire | C2H3F3N2 |
4-Méthoxybenzamidoxime, 97 %, Thermo Scientific Chemicals
CAS: 5373-87-5 Formule moléculaire: C8H10N2O2 Poids moléculaire (g/mol): 166.18 Numéro MDL: MFCD05664434 Clé InChI: WVALRFKCJCIVBR-UHFFFAOYSA-N Synonyme: 4-methoxybenzamidoxime,z-n'-hydroxy-4-methoxybenzimidamide,p-methoxybenzamidoxime,n-hydroxy-4-methoxybenzenecarboximidamide,z-n'-hydroxy-4-methoxybenzene-1-carboximidamide,n-hydroxy-4-methoxy-benzamidine,n'-hydroxy-4-methoxybenzimidamide,hydroxyimino 4-methoxyphenyl methylamine,benzenecarboximidamide, n-hydroxy-4-methoxy,p-methoxybenzamideoxime CID PubChem: 5360053 Nom IUPAC: N’-hydroxy-4-méthoxybenzènecarboximidamide SMILES: COC1=CC=C(C=C1)C(=NO)N
Poids moléculaire (g/mol) | 166.18 |
---|---|
Synonyme | 4-methoxybenzamidoxime,z-n'-hydroxy-4-methoxybenzimidamide,p-methoxybenzamidoxime,n-hydroxy-4-methoxybenzenecarboximidamide,z-n'-hydroxy-4-methoxybenzene-1-carboximidamide,n-hydroxy-4-methoxy-benzamidine,n'-hydroxy-4-methoxybenzimidamide,hydroxyimino 4-methoxyphenyl methylamine,benzenecarboximidamide, n-hydroxy-4-methoxy,p-methoxybenzamideoxime |
Numéro MDL | MFCD05664434 |
CAS | 5373-87-5 |
CID PubChem | 5360053 |
Nom IUPAC | N’-hydroxy-4-méthoxybenzènecarboximidamide |
Clé InChI | WVALRFKCJCIVBR-UHFFFAOYSA-N |
SMILES | COC1=CC=C(C=C1)C(=NO)N |
Formule moléculaire | C8H10N2O2 |
Hydrate de chlorhydrate de benzamidine, 99 %, eau environ 10-14 %, Thermo Scientific Chemicals
CAS: 206752-36-5 Formule moléculaire: C7H9ClN2 Poids moléculaire (g/mol): 156.61 Numéro MDL: MFCD00066285 Clé InChI: LZCZIHQBSCVGRD-UHFFFAOYSA-N Synonyme: benzamidine hydrochloride hydrate,benzenecarboximidamide hydrochloride hydrate,benzamidine hydrate hydrochloride,benzamidinium chloride,benzamidinehydrochloridehydrate,amidinobenzene hydrochloride,benzamidine hydrochloride monohydrate,acmc-20a6bw,ksc491m3d,benzamidin hydrochloride hydrate CID PubChem: 16219042 Nom IUPAC: benzènecarboximidamide ; hydrate ; chlorhydrate SMILES: Cl.NC(=N)C1=CC=CC=C1
Poids moléculaire (g/mol) | 156.61 |
---|---|
Synonyme | benzamidine hydrochloride hydrate,benzenecarboximidamide hydrochloride hydrate,benzamidine hydrate hydrochloride,benzamidinium chloride,benzamidinehydrochloridehydrate,amidinobenzene hydrochloride,benzamidine hydrochloride monohydrate,acmc-20a6bw,ksc491m3d,benzamidin hydrochloride hydrate |
Numéro MDL | MFCD00066285 |
CAS | 206752-36-5 |
CID PubChem | 16219042 |
Nom IUPAC | benzènecarboximidamide ; hydrate ; chlorhydrate |
Clé InChI | LZCZIHQBSCVGRD-UHFFFAOYSA-N |
SMILES | Cl.NC(=N)C1=CC=CC=C1 |
Formule moléculaire | C7H9ClN2 |
Chlorhydrate de 3-méthylbenzènecarboximidamide, 95 %, Thermo Scientific™
CAS: 20680-59-5 Formule moléculaire: C8H11ClN2 Poids moléculaire (g/mol): 170.64 Numéro MDL: MFCD02180878 Clé InChI: QEAXZIMXYPAZAX-UHFFFAOYSA-N Synonyme: 3-methylbenzenecarboximidamide hydrochloride,3-methylbenzimidamide hydrochloride,3-methyl-benzamidine hydrochloride,3-methylbenzene-1-carboximidamide hydrochloride,benzenecarboximidamide, 3-methyl-, monohydrochloride,m-toluamidine hydrochloride,3-methylbenzamidine, hydrochloride,3-methylbenzenecarboxamidine, chloride,3-methylbenzenecarboximidamide hcl,3-carbamimidoyltoluene hydrochloride CID PubChem: 2800701 Nom IUPAC: 3-méthylbenzènecarboximidamide ; chlorhydrate SMILES: CC1=CC=CC(=C1)C(=N)N.Cl
Poids moléculaire (g/mol) | 170.64 |
---|---|
Synonyme | 3-methylbenzenecarboximidamide hydrochloride,3-methylbenzimidamide hydrochloride,3-methyl-benzamidine hydrochloride,3-methylbenzene-1-carboximidamide hydrochloride,benzenecarboximidamide, 3-methyl-, monohydrochloride,m-toluamidine hydrochloride,3-methylbenzamidine, hydrochloride,3-methylbenzenecarboxamidine, chloride,3-methylbenzenecarboximidamide hcl,3-carbamimidoyltoluene hydrochloride |
Numéro MDL | MFCD02180878 |
CAS | 20680-59-5 |
CID PubChem | 2800701 |
Nom IUPAC | 3-méthylbenzènecarboximidamide ; chlorhydrate |
Clé InChI | QEAXZIMXYPAZAX-UHFFFAOYSA-N |
SMILES | CC1=CC=CC(=C1)C(=N)N.Cl |
Formule moléculaire | C8H11ClN2 |
Chlorhydrate de 2-(1-Naphthylméthyl)-2-imidazoline, 99 %, Thermo Scientific Chemicals
CAS: 550-99-2 Formule moléculaire: C14H15ClN2 Poids moléculaire (g/mol): 246.738 Numéro MDL: MFCD00012554 Clé InChI: DJDFFEBSKJCGHC-UHFFFAOYSA-N Synonyme: naphazoline hydrochloride,albalon,naphazoline hcl,rhinantin,rhinoperd,stricylon,naphcon,niazol,rinofug,vasocon CID PubChem: 11079 ChEBI: CHEBI:7470 Nom IUPAC: 2-(naphtalène-1-ylméthyl)-4,5-dihydro-1H-imidazole;chlorhydrate SMILES: C1CN=C(N1)CC2=CC=CC3=CC=CC=C32.Cl
Poids moléculaire (g/mol) | 246.738 |
---|---|
Synonyme | naphazoline hydrochloride,albalon,naphazoline hcl,rhinantin,rhinoperd,stricylon,naphcon,niazol,rinofug,vasocon |
Numéro MDL | MFCD00012554 |
CAS | 550-99-2 |
CID PubChem | 11079 |
ChEBI | CHEBI:7470 |
Nom IUPAC | 2-(naphtalène-1-ylméthyl)-4,5-dihydro-1H-imidazole;chlorhydrate |
Clé InChI | DJDFFEBSKJCGHC-UHFFFAOYSA-N |
SMILES | C1CN=C(N1)CC2=CC=CC3=CC=CC=C32.Cl |
Formule moléculaire | C14H15ClN2 |
Éthyl2 -oxyminooxamate98, %, Thermo Scientific Chemicals
CAS: 10489-74-4 Formule moléculaire: C4H8N2O3 Poids moléculaire (g/mol): 132.12 Numéro MDL: MFCD03013442 MFCD14666500 MFCD03013442 Clé InChI: QGYKRMZPOOILBA-UHFFFAOYSA-N Synonyme: ethyl 2-oximinooxamate,ethyl 2-amino-2-hydroxyimino acetate,ethyl z-2-amino-2-hydroxyimino acetate,ethyl 2-hydroxyamino-2-iminoacetate,ethyl n'-hydroxycarbamimidoyl formate,ethyl aminohydroxyiminoacetate,acetic acid, 2-amino-2-hydroxyimino-, ethyl ester, 2z,ethyl amino hydroxyimino ethanoate,ethyl n-hydroxycarbamimidoyl formate,amino-hydroxyimino-acetic acid ethyl ester CID PubChem: 9614369 Nom IUPAC: ethyl (N'-hydroxycarbamimidoyl)formate SMILES: CCOC(=O)C(N)=NO
Poids moléculaire (g/mol) | 132.12 |
---|---|
Synonyme | ethyl 2-oximinooxamate,ethyl 2-amino-2-hydroxyimino acetate,ethyl z-2-amino-2-hydroxyimino acetate,ethyl 2-hydroxyamino-2-iminoacetate,ethyl n'-hydroxycarbamimidoyl formate,ethyl aminohydroxyiminoacetate,acetic acid, 2-amino-2-hydroxyimino-, ethyl ester, 2z,ethyl amino hydroxyimino ethanoate,ethyl n-hydroxycarbamimidoyl formate,amino-hydroxyimino-acetic acid ethyl ester |
Numéro MDL | MFCD03013442 MFCD14666500 MFCD03013442 |
CAS | 10489-74-4 |
CID PubChem | 9614369 |
Nom IUPAC | ethyl (N'-hydroxycarbamimidoyl)formate |
Clé InChI | QGYKRMZPOOILBA-UHFFFAOYSA-N |
SMILES | CCOC(=O)C(N)=NO |
Formule moléculaire | C4H8N2O3 |