
Imidazopyrimidines
- (37)
- (6)
- (1)
- (7)
- (4)
- (31)
- (13)
- (2)
- (2)
- (1)
- (1)
- (4)
- (5)
- (45)
- (3)
- (1)
- (10)
- (11)
- (1)
- (48)
- (1)
- (4)
- (2)
- (7)
- (20)
- (2)
- (2)
- (12)
- (2)
- (8)
- (1)
- (2)
- (2)
- (6)
- (6)
- (4)
- (13)
- (5)
- (6)
- (2)
- (4)
- (1)
- (2)
- (7)
- (5)
- (2)
- (17)
- (12)
- (2)
- (5)
- (2)
- (21)
- (2)
- (3)
- (3)
- (2)
- (7)
- (2)
- (2)
- (3)
- (1)
- (2)
- (2)
- (1)
- (2)
- (7)
- (1)
- (3)
- (2)
- (9)
- (2)
- (2)
- (1)
- (2)
- (1)
- (6)
- (2)
- (2)
- (2)
- (6)
- (2)
- (2)
- (2)
- (6)
- (2)
- (3)
- (2)
- (1)
- (2)
- (3)
- (2)
- (2)
- (4)
- (2)
- (1)
- (5)
- (2)
- (13)
- (2)
- (2)
- (5)
- (4)
- (45)
- (2)
- (1)
- (2)
- (4)
- (3)
- (3)
- (1)
- (2)
- (6)
- (8)
- (32)
- (3)
- (1)
- (3)
- (6)
- (37)
- (5)
- (2)
- (1)
- (92)
- (3)
- (1)
- (1)
- (2)
- (5)
- (2)
- (3)
- (53)
- (13)
- (6)
- (1)
- (1)
- (2)
- (7)
Filtered Search Results

U S PHARMACOPEIA ADENINE 200MG
NC3136485 ADENINE 200MG

Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More
Teco Diagnostics URIC ACID REAGENT(PWDR,20X12ML
Uric Acid reagent (powder, 20 x 12mL)

Non-distribution item offered as a customer accommodation; additional freight charges may apply.
Learn More
Caffeine (Powder/USP/FCC), Fisher Chemical
CAS: 58-08-2 Molecular Formula: C8H10N4O2 Molecular Weight (g/mol): 194.19 MDL Number: MFCD00005758 InChI Key: RYYVLZVUVIJVGH-UHFFFAOYSA-N Synonym: caffeine,1,3,7-trimethylxanthine,guaranine,thein,cafeina,methyltheobromine,koffein,mateina,theine,alert-pep PubChem CID: 2519 ChEBI: CHEBI:27732 IUPAC Name: 1,3,7-trimethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione SMILES: CN1C=NC2=C1C(=O)N(C)C(=O)N2C
PubChem CID | 2519 |
---|---|
CAS | 58-08-2 |
Molecular Weight (g/mol) | 194.19 |
ChEBI | CHEBI:27732 |
MDL Number | MFCD00005758 |
SMILES | CN1C=NC2=C1C(=O)N(C)C(=O)N2C |
Synonym | caffeine,1,3,7-trimethylxanthine,guaranine,thein,cafeina,methyltheobromine,koffein,mateina,theine,alert-pep |
IUPAC Name | 1,3,7-trimethyl-2,3,6,7-tetrahydro-1H-purine-2,6-dione |
InChI Key | RYYVLZVUVIJVGH-UHFFFAOYSA-N |
Molecular Formula | C8H10N4O2 |
Pentoxifylline, Thermo Scientific™
CAS: 6493-05-6 Molecular Formula: C13H18N4O3 Molecular Weight (g/mol): 278.31 InChI Key: BYPFEZZEUUWMEJ-UHFFFAOYSA-N Synonym: pentoxifylline,trental,oxpentifylline,pentoxifyllin,torental,pentoxyphylline,pentoxil,dimethyloxohexylxanthine,pentoxiphyllium,vazofirin PubChem CID: 4740 ChEBI: CHEBI:7986 IUPAC Name: 3,7-dimethyl-1-(5-oxohexyl)purine-2,6-dione SMILES: CC(=O)CCCCN1C(=O)C2=C(N=CN2C)N(C1=O)C
PubChem CID | 4740 |
---|---|
CAS | 6493-05-6 |
Molecular Weight (g/mol) | 278.31 |
ChEBI | CHEBI:7986 |
SMILES | CC(=O)CCCCN1C(=O)C2=C(N=CN2C)N(C1=O)C |
Synonym | pentoxifylline,trental,oxpentifylline,pentoxifyllin,torental,pentoxyphylline,pentoxil,dimethyloxohexylxanthine,pentoxiphyllium,vazofirin |
IUPAC Name | 3,7-dimethyl-1-(5-oxohexyl)purine-2,6-dione |
InChI Key | BYPFEZZEUUWMEJ-UHFFFAOYSA-N |
Molecular Formula | C13H18N4O3 |
4-hydroxy-6-mercaptopyrazolo[3,4-d]pyrimidine, 98%, Thermo Scientific™
CAS: 24521-76-4 Molecular Formula: C5H4N4OS Molecular Weight (g/mol): 168.18 MDL Number: MFCD00022782 InChI Key: SXRSXYWROQWSGJ-UHFFFAOYSA-N Synonym: 4-hydroxy-6-mercaptopyrazolo 3,4-d pyrimidine,6-mercapto-1h-pyrazolo 3,4-d pyrimidin-4-ol,4-hydroxy-6-mercapto-1h-pyrazolo 3,4-d pyrimidine,6-mercapto-4-hydroxy-1h-pyrazolo 3,4-d pyrimidine,6-sulfanyl-1h,4h,5h-pyrazolo 3,4-d pyrimidin-4-one,6-mercapto-1,5-dihydro-4h-pyrazolo 3,4-d pyrimidin-4-one,1,5,6,7-tetrahydro-6-thioxo-4h-pyrazolo 3,4-d pyrimidin-4-one,4h-pyrazolo 3,4-d pyrimidin-4-one, 1,5,6,7-tetrahydro-6-thioxo,4h-pyrazolo 3,4-d pyrimidin-4-one,1,5,6,7-tetrahydro-6-thioxo PubChem CID: 3034349 IUPAC Name: 6-sulfanylidene-1,2-dihydropyrazolo[3,4-d]pyrimidin-4-one SMILES: C1=C2C(=NC(=S)NC2=O)NN1
PubChem CID | 3034349 |
---|---|
CAS | 24521-76-4 |
Molecular Weight (g/mol) | 168.18 |
MDL Number | MFCD00022782 |
SMILES | C1=C2C(=NC(=S)NC2=O)NN1 |
Synonym | 4-hydroxy-6-mercaptopyrazolo 3,4-d pyrimidine,6-mercapto-1h-pyrazolo 3,4-d pyrimidin-4-ol,4-hydroxy-6-mercapto-1h-pyrazolo 3,4-d pyrimidine,6-mercapto-4-hydroxy-1h-pyrazolo 3,4-d pyrimidine,6-sulfanyl-1h,4h,5h-pyrazolo 3,4-d pyrimidin-4-one,6-mercapto-1,5-dihydro-4h-pyrazolo 3,4-d pyrimidin-4-one,1,5,6,7-tetrahydro-6-thioxo-4h-pyrazolo 3,4-d pyrimidin-4-one,4h-pyrazolo 3,4-d pyrimidin-4-one, 1,5,6,7-tetrahydro-6-thioxo,4h-pyrazolo 3,4-d pyrimidin-4-one,1,5,6,7-tetrahydro-6-thioxo |
IUPAC Name | 6-sulfanylidene-1,2-dihydropyrazolo[3,4-d]pyrimidin-4-one |
InChI Key | SXRSXYWROQWSGJ-UHFFFAOYSA-N |
Molecular Formula | C5H4N4OS |
Thermo Scientific Chemicals Meropenem trihydrate
CAS: 119478-56-7 Molecular Formula: C17H31N3O8S Molecular Weight (g/mol): 437.51 InChI Key: CTUAQTBUVLKNDJ-TXBRDXQXSA-N IUPAC Name: (4R)-3-{[(3S,5S)-5-(dimethylcarbamoyl)pyrrolidin-3-yl]sulfanyl}-6-[(1S)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid trihydrate SMILES: O.O.O.C[C@H](O)C1C2[C@@H](C)C(S[C@@H]3CN[C@@H](C3)C(=O)N(C)C)=C(N2C1=O)C(O)=O
CAS | 119478-56-7 |
---|---|
Molecular Weight (g/mol) | 437.51 |
SMILES | O.O.O.C[C@H](O)C1C2[C@@H](C)C(S[C@@H]3CN[C@@H](C3)C(=O)N(C)C)=C(N2C1=O)C(O)=O |
IUPAC Name | (4R)-3-{[(3S,5S)-5-(dimethylcarbamoyl)pyrrolidin-3-yl]sulfanyl}-6-[(1S)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid trihydrate |
InChI Key | CTUAQTBUVLKNDJ-TXBRDXQXSA-N |
Molecular Formula | C17H31N3O8S |
6-Thioguanine, Tocris Bioscience™
CAS: 154-42-7 Molecular Formula: C5H5N5S Molecular Weight (g/mol): 167.19 MDL Number: MFCD00233553 InChI Key: WYWHKKSPHMUBEB-UHFFFAOYSA-N Synonym: 6-thioguanine,thioguanine,tioguanine,2-amino-6-mercaptopurine,6-mercaptoguanine,tioguanin,tabloid,lanvis,2-amino-6-purinethiol,2-aminopurine-6-thiol PubChem CID: 2723601 ChEBI: CHEBI:9555 IUPAC Name: 2-amino-6,7-dihydro-3H-purine-6-thione SMILES: NC1=NC(=S)C2=C(N1)N=CN2
PubChem CID | 2723601 |
---|---|
CAS | 154-42-7 |
Molecular Weight (g/mol) | 167.19 |
ChEBI | CHEBI:9555 |
MDL Number | MFCD00233553 |
SMILES | NC1=NC(=S)C2=C(N1)N=CN2 |
Synonym | 6-thioguanine,thioguanine,tioguanine,2-amino-6-mercaptopurine,6-mercaptoguanine,tioguanin,tabloid,lanvis,2-amino-6-purinethiol,2-aminopurine-6-thiol |
IUPAC Name | 2-amino-6,7-dihydro-3H-purine-6-thione |
InChI Key | WYWHKKSPHMUBEB-UHFFFAOYSA-N |
Molecular Formula | C5H5N5S |
Aminopurvalanol A, Tocris Bioscience™
CAS: 220792-57-4 Molecular Formula: C19H26ClN7O Molecular Weight (g/mol): 403.915 InChI Key: RAMROQQYRRQPDL-UHFFFAOYSA-N Synonym: d0dm5s,aminopurvalanol a and ng-97 PubChem CID: 9549304 IUPAC Name: 2-[[6-(3-amino-5-chloroanilino)-9-propan-2-ylpurin-2-yl]amino]-3-methylbutan-1-ol SMILES: CC(C)C(CO)NC1=NC2=C(C(=N1)NC3=CC(=CC(=C3)N)Cl)N=CN2C(C)C
PubChem CID | 9549304 |
---|---|
CAS | 220792-57-4 |
Molecular Weight (g/mol) | 403.915 |
SMILES | CC(C)C(CO)NC1=NC2=C(C(=N1)NC3=CC(=CC(=C3)N)Cl)N=CN2C(C)C |
Synonym | d0dm5s,aminopurvalanol a and ng-97 |
IUPAC Name | 2-[[6-(3-amino-5-chloroanilino)-9-propan-2-ylpurin-2-yl]amino]-3-methylbutan-1-ol |
InChI Key | RAMROQQYRRQPDL-UHFFFAOYSA-N |
Molecular Formula | C19H26ClN7O |
TCS 5861528, Tocris Bioscience™
CAS: 332117-28-9 Molecular Formula: C19H23N5O3 Molecular Weight (g/mol): 369.425 InChI Key: ZUTUWJYMCADJHD-UHFFFAOYSA-N Synonym: chembridge-5861528,n-4-butan-2-ylphenyl-2-1,3-dimethyl-2,6-dioxopurin-7-yl acetamide,2-1,3-dimethyl-2,6-dioxopurin-7-yl-n-4-sec-butyl phenyl acetamide,d0j0bv,n-4-2r-butan-2-yl phenyl-2-1,3-dimethyl-2,6-dioxopurin-7-yl acetamide,n-4-sec-butylphenyl-2-1,3-dimethyl-2,6-dioxo-2,3-dihydro-1h-purin-7 6h-yl acetamide,2-1,3-dimethyl-2,6-dioxo 1,3,7-trihydropurin-7-yl-n-4-methylpropyl phenyl acetamide,2-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl-n-4-1-methylpropyl phenyl acetamide,n-4-butan-2-yl phenyl-2-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl acetamide,n-4-butan-2-yl phenyl-2-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1h-purin-7-yl acetamide PubChem CID: 2873523 IUPAC Name: N-(4-butan-2-ylphenyl)-2-(1,3-dimethyl-2,6-dioxopurin-7-yl)acetamide SMILES: CCC(C)C1=CC=C(C=C1)NC(=O)CN2C=NC3=C2C(=O)N(C(=O)N3C)C
PubChem CID | 2873523 |
---|---|
CAS | 332117-28-9 |
Molecular Weight (g/mol) | 369.425 |
SMILES | CCC(C)C1=CC=C(C=C1)NC(=O)CN2C=NC3=C2C(=O)N(C(=O)N3C)C |
Synonym | chembridge-5861528,n-4-butan-2-ylphenyl-2-1,3-dimethyl-2,6-dioxopurin-7-yl acetamide,2-1,3-dimethyl-2,6-dioxopurin-7-yl-n-4-sec-butyl phenyl acetamide,d0j0bv,n-4-2r-butan-2-yl phenyl-2-1,3-dimethyl-2,6-dioxopurin-7-yl acetamide,n-4-sec-butylphenyl-2-1,3-dimethyl-2,6-dioxo-2,3-dihydro-1h-purin-7 6h-yl acetamide,2-1,3-dimethyl-2,6-dioxo 1,3,7-trihydropurin-7-yl-n-4-methylpropyl phenyl acetamide,2-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl-n-4-1-methylpropyl phenyl acetamide,n-4-butan-2-yl phenyl-2-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7h-purin-7-yl acetamide,n-4-butan-2-yl phenyl-2-1,3-dimethyl-2,6-dioxo-2,3,6,7-tetrahydro-1h-purin-7-yl acetamide |
IUPAC Name | N-(4-butan-2-ylphenyl)-2-(1,3-dimethyl-2,6-dioxopurin-7-yl)acetamide |
InChI Key | ZUTUWJYMCADJHD-UHFFFAOYSA-N |
Molecular Formula | C19H23N5O3 |
8-(3-Chlorostyryl)caffeine, Tocris Bioscience™
CAS: 147700-11-6 Molecular Formula: C32H30Cl2N8O4 Molecular Weight (g/mol): 661.544 InChI Key: YMUNFKYGBSLPLQ-UHFFFAOYSA-N Synonym: 1h-purine-2,6-dione,8-1e-2-3-chlorophenyl ethenyl-3,7-dihydro-1,3,7-trimethyl,acmc-20n59d PubChem CID: 57348597 IUPAC Name: 8-[2-(3-chlorophenyl)ethenyl]-1,3,7-trimethylpurine-2,6-dione SMILES: CN1C(=NC2=C1C(=O)N(C(=O)N2C)C)C=CC3=CC(=CC=C3)Cl.CN1C(=NC2=C1C(=O)N(C(=O)N2C)C)C=CC3=CC(=CC=C3)Cl
PubChem CID | 57348597 |
---|---|
CAS | 147700-11-6 |
Molecular Weight (g/mol) | 661.544 |
SMILES | CN1C(=NC2=C1C(=O)N(C(=O)N2C)C)C=CC3=CC(=CC=C3)Cl.CN1C(=NC2=C1C(=O)N(C(=O)N2C)C)C=CC3=CC(=CC=C3)Cl |
Synonym | 1h-purine-2,6-dione,8-1e-2-3-chlorophenyl ethenyl-3,7-dihydro-1,3,7-trimethyl,acmc-20n59d |
IUPAC Name | 8-[2-(3-chlorophenyl)ethenyl]-1,3,7-trimethylpurine-2,6-dione |
InChI Key | YMUNFKYGBSLPLQ-UHFFFAOYSA-N |
Molecular Formula | C32H30Cl2N8O4 |
Theophylline-7-acetic acid, 98%, Thermo Scientific Chemicals
CAS: 652-37-9 Molecular Formula: C9H9N4NaO4 Molecular Weight (g/mol): 260.19 MDL Number: MFCD00022832 InChI Key: MSFVZSOKOXZSME-UHFFFAOYSA-M Synonym: acefylline,theophylline-7-acetic acid,acephylline,theophyllineacetic acid,carboxymethyltheophylline,7-carboxymethyl theophylline,7-theophyllinylacetic acid,theophyllin-7-ylacetic acid,7-theophyllinessigsaeure,7-theophyllineacetic acid PubChem CID: 69550 IUPAC Name: 2-(1,3-dimethyl-2,6-dioxopurin-7-yl)acetic acid SMILES: [Na+].CN1C2=C(N(CC([O-])=O)C=N2)C(=O)N(C)C1=O
PubChem CID | 69550 |
---|---|
CAS | 652-37-9 |
Molecular Weight (g/mol) | 260.19 |
MDL Number | MFCD00022832 |
SMILES | [Na+].CN1C2=C(N(CC([O-])=O)C=N2)C(=O)N(C)C1=O |
Synonym | acefylline,theophylline-7-acetic acid,acephylline,theophyllineacetic acid,carboxymethyltheophylline,7-carboxymethyl theophylline,7-theophyllinylacetic acid,theophyllin-7-ylacetic acid,7-theophyllinessigsaeure,7-theophyllineacetic acid |
IUPAC Name | 2-(1,3-dimethyl-2,6-dioxopurin-7-yl)acetic acid |
InChI Key | MSFVZSOKOXZSME-UHFFFAOYSA-M |
Molecular Formula | C9H9N4NaO4 |
3-Methylxanthine, 97%, Thermo Scientific™
CAS: 1076-22-8 Molecular Formula: C6H6N4O2 Molecular Weight (g/mol): 166.14 InChI Key: GMSNIKWWOQHZGF-UHFFFAOYSA-N Synonym: 3-methylxanthine,3-methyl-1h-purine-2,6 3h,7h-dione,2,6-dihydroxy-3-methylpurine,xanthine, 3-methyl,3 mx,3-methyl xanthine,1h-purine-2,6-dione, 3,7-dihydro-3-methyl,unii-ws6x982oec,3-methyl-2,3,6,7-tetrahydro-1h-purine-2,6-dione,ccris 5817 PubChem CID: 70639 ChEBI: CHEBI:62207 IUPAC Name: 3-methyl-7H-purine-2,6-dione SMILES: CN1C2=C(C(=O)NC1=O)NC=N2
PubChem CID | 70639 |
---|---|
CAS | 1076-22-8 |
Molecular Weight (g/mol) | 166.14 |
ChEBI | CHEBI:62207 |
SMILES | CN1C2=C(C(=O)NC1=O)NC=N2 |
Synonym | 3-methylxanthine,3-methyl-1h-purine-2,6 3h,7h-dione,2,6-dihydroxy-3-methylpurine,xanthine, 3-methyl,3 mx,3-methyl xanthine,1h-purine-2,6-dione, 3,7-dihydro-3-methyl,unii-ws6x982oec,3-methyl-2,3,6,7-tetrahydro-1h-purine-2,6-dione,ccris 5817 |
IUPAC Name | 3-methyl-7H-purine-2,6-dione |
InChI Key | GMSNIKWWOQHZGF-UHFFFAOYSA-N |
Molecular Formula | C6H6N4O2 |
2'-Deoxyadenosine-5'-triphosphate disodium salt, 98%, Thermo Scientific™
CAS: 74299-50-6 Molecular Formula: C10H14N5Na2O12P3 Molecular Weight (g/mol): 535.15 MDL Number: MFCD00080335 InChI Key: JEKDCIBJADJZSK-DZVPOJRENA-L Synonym: 2'-deoxyadenosine-5'-triphosphate disodium salt PubChem CID: 131674273 IUPAC Name: disodium;[[[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl] phosphate SMILES: [Na+].[Na+].NC1=C2N=CN([C@H]3C[C@H](O)[C@@H](COP(O)(=O)OP([O-])(=O)OP(O)([O-])=O)O3)C2=NC=N1
PubChem CID | 131674273 |
---|---|
CAS | 74299-50-6 |
Molecular Weight (g/mol) | 535.15 |
MDL Number | MFCD00080335 |
SMILES | [Na+].[Na+].NC1=C2N=CN([C@H]3C[C@H](O)[C@@H](COP(O)(=O)OP([O-])(=O)OP(O)([O-])=O)O3)C2=NC=N1 |
Synonym | 2'-deoxyadenosine-5'-triphosphate disodium salt |
IUPAC Name | disodium;[[[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl] phosphate |
InChI Key | JEKDCIBJADJZSK-DZVPOJRENA-L |
Molecular Formula | C10H14N5Na2O12P3 |
7-Methyladenine 98%, Thermo Scientific™
CAS: 935-69-3 Molecular Formula: C6H7N5 Molecular Weight (g/mol): 149.157 InChI Key: HCGHYQLFMPXSDU-UHFFFAOYSA-N Synonym: 7-methyladenine,7-methyl-7h-purin-6-amine,6-amino-7-methylpurine,n7-methyladenine,adenine, 7-methyl,7h-purin-6-amine, 7-methyl,7h-purin-6-amine, 7-methyl-9ci,7-methyl-7h-adenine,7-methyl-6-purinamine PubChem CID: 71593 ChEBI: CHEBI:28921 IUPAC Name: 7-methylpurin-6-amine SMILES: CN1C=NC2=C1C(=NC=N2)N
PubChem CID | 71593 |
---|---|
CAS | 935-69-3 |
Molecular Weight (g/mol) | 149.157 |
ChEBI | CHEBI:28921 |
SMILES | CN1C=NC2=C1C(=NC=N2)N |
Synonym | 7-methyladenine,7-methyl-7h-purin-6-amine,6-amino-7-methylpurine,n7-methyladenine,adenine, 7-methyl,7h-purin-6-amine, 7-methyl,7h-purin-6-amine, 7-methyl-9ci,7-methyl-7h-adenine,7-methyl-6-purinamine |
IUPAC Name | 7-methylpurin-6-amine |
InChI Key | HCGHYQLFMPXSDU-UHFFFAOYSA-N |
Molecular Formula | C6H7N5 |
Imidazo[1,2-a]pyrimidine 98.0+%, TCI America™
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More

Small and/or specialty supplier based on Federal laws and SBA requirements.
Learn More
CAS: 274-95-3 Molecular Formula: C6H5N3 Molecular Weight (g/mol): 119.13 MDL Number: MFCD06245377 InChI Key: INSWZAQOISIYDT-UHFFFAOYSA-N PubChem CID: 577018 IUPAC Name: imidazo[1,2-a]pyrimidine SMILES: C1=CN2C=CC=NC2=N1
PubChem CID | 577018 |
---|---|
CAS | 274-95-3 |
Molecular Weight (g/mol) | 119.13 |
MDL Number | MFCD06245377 |
SMILES | C1=CN2C=CC=NC2=N1 |
IUPAC Name | imidazo[1,2-a]pyrimidine |
InChI Key | INSWZAQOISIYDT-UHFFFAOYSA-N |
Molecular Formula | C6H5N3 |