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Murcko scaffold

2-Phenylphthalazin-1(2H)-one scaffold

99 chemicals on CompoundList share this ring system.

Rings
3
Scaffold atoms
17
Chemicals
99
With full pages
25
Scaffold SMILES

O=c1c2ccccc2cnn1-c1ccccc1

A Bemis-Murcko scaffold is what remains of a molecule when every side chain is removed: the rings and the chains that link them. Chemicals that share a scaffold often belong to the same compound series, which helps when you look for analogues, alternative suppliers or related building blocks.

Substructure search with this scaffoldOpen the 2-Phenylphthalazin-1(2H)-one page
Murcko scaffold O=c1c2ccccc2cnn1-c1ccccc1

Computed from the structures of the chemicals listed here. Stereo and charges are removed before the scaffold is taken.

Chemicals with this scaffold

Open one to see its structure, properties and suppliers.

Showing 1 to 48 of 99 chemicals

1(2H)-Phthalazinone, 4-methyl-8-nitro-2-phenyl- chemical structure, C15H11N3O3, CAS 16676-80-5
1(2H)-Phthalazinone, 4-methyl-8-nitro-2-phenyl-
CAS 16676-80-5C15H11N3O3
1(2H)-Phthalazinone, 8-amino-4-methyl-2-phenyl- chemical structure, C15H13N3O, CAS 16676-83-8
1(2H)-Phthalazinone, 8-amino-4-methyl-2-phenyl-
CAS 16676-83-8C15H13N3O
1-Phthalazinecarboxylic acid, 4-oxo-3-phenyl-, 2-(diethylamino)ethyl ester, hydrochloride chemical structure, C21H24ClN3O3, CAS 21131-13-5
1-Phthalazinecarboxylic acid, 4-oxo-3-phenyl-, 2-(diethylamino)ethyl ester, hydrochloride
CAS 21131-13-5C21H24ClN3O3
1-Phthalazinecarboxylic acid, 4-oxo-3-phenyl-, 3-(dimethylamino)propyl ester, hydrochloride chemical structure, C20H22ClN3O3, CAS 21131-15-7
1-Phthalazinecarboxylic acid, 4-oxo-3-phenyl-, 3-(dimethylamino)propyl ester, hydrochloride
CAS 21131-15-7C20H22ClN3O3
4-Oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylic acid chemical structure, C15H10N2O3, CAS 57531-19-8
4-Oxo-3-phenyl-3,4-dihydrophthalazine-1-carboxylic acid
CAS 57531-19-8C15H10N2O3
2-Phenylphthalazin-1(2H)-one chemical structure, C14H10N2O, CAS 6266-49-5
2-Phenylphthalazin-1(2H)-one
CAS 6266-49-5C14H10N2O
4-Methyl-2-phenyl-2H-phthalazin-1-one chemical structure, C15H12N2O, CAS 6941-96-4
4-Methyl-2-phenyl-2H-phthalazin-1-one
CAS 6941-96-4C15H12N2O
2-(4-Chlorophenyl)-1-phthalazinone chemical structure, C14H9ClN2O, CAS 161716-23-0
2-(4-Chlorophenyl)-1-phthalazinone
CAS 161716-23-0C14H9ClN2O
2-(5-Chloro-2-nitrophenyl)-4-methylphthalazin-1-one chemical structure, C15H10ClN3O3, CAS 329922-58-9
2-(5-Chloro-2-nitrophenyl)-4-methylphthalazin-1-one
CAS 329922-58-9C15H10ClN3O3
2-(3,4-Dichloro-phenyl)-4-methyl-2H-phthalazin-1-one chemical structure, C15H10Cl2N2O, CAS 332056-24-3
2-(3,4-Dichloro-phenyl)-4-methyl-2H-phthalazin-1-one
CAS 332056-24-3C15H10Cl2N2O
2-(2-Amino-5-chlorophenyl)-4-methylphthalazin-1(2H)-one chemical structure, C15H12ClN3O, CAS 296770-22-4
2-(2-Amino-5-chlorophenyl)-4-methylphthalazin-1(2H)-one
CAS 296770-22-4C15H12ClN3O
2-(4-Methyl-1-oxo-2(1H)-phthalazinyl)benzoic acid chemical structure, C16H12N2O3, CAS 296790-57-3
2-(4-Methyl-1-oxo-2(1H)-phthalazinyl)benzoic acid
CAS 296790-57-3C16H12N2O3
4-(4-Methyl-1-oxophthalazin-2(1H)-yl)benzoic acid chemical structure, C16H12N2O3, CAS 306731-76-0
4-(4-Methyl-1-oxophthalazin-2(1H)-yl)benzoic acid
CAS 306731-76-0C16H12N2O3
3-(4-Methyl-1-oxophthalazin-2(1H)-yl)benzoic acid chemical structure, C16H12N2O3, CAS 296790-56-2
3-(4-Methyl-1-oxophthalazin-2(1H)-yl)benzoic acid
CAS 296790-56-2C16H12N2O3
7,8-Dimethoxy-2-phenylphthalazin-1(2H)-one chemical structure, C16H14N2O3, CAS 98670-36-1
7,8-Dimethoxy-2-phenylphthalazin-1(2H)-one
CAS 98670-36-1C16H14N2O3
2-(2,4-Dichlorophenyl)-4-methylphthalazin-1(2H)-one chemical structure, C15H10Cl2N2O, CAS 332056-23-2
2-(2,4-Dichlorophenyl)-4-methylphthalazin-1(2H)-one
CAS 332056-23-2C15H10Cl2N2O
4-Methyl-2-(4-nitrophenyl)phthalazin-1(2H)-one chemical structure, C15H11N3O3, CAS 100864-77-5
4-Methyl-2-(4-nitrophenyl)phthalazin-1(2H)-one
CAS 100864-77-5C15H11N3O3
2-(4-Bromophenyl)-4-methylphthalazin-1-one chemical structure, C15H11BrN2O, CAS 331946-95-3
2-(4-Bromophenyl)-4-methylphthalazin-1-one
CAS 331946-95-3C15H11BrN2O
4-Methyl-2-[3-(trifluoromethyl)phenyl]phthalazin-1-one chemical structure, C16H11F3N2O, CAS 361364-47-8
4-Methyl-2-[3-(trifluoromethyl)phenyl]phthalazin-1-one
CAS 361364-47-8C16H11F3N2O
4-Ethyl-2-phenylphthalazin-1-one chemical structure, C16H14N2O, CAS 693827-93-9
4-Ethyl-2-phenylphthalazin-1-one
CAS 693827-93-9C16H14N2O
4-Methyl-2-(2-nitrophenyl)phthalazin-1-one chemical structure, C15H11N3O3, CAS 297132-10-6
4-Methyl-2-(2-nitrophenyl)phthalazin-1-one
CAS 297132-10-6C15H11N3O3
2-(2,4,6-Trichlorophenyl)-1(2H)-phthalazinone chemical structure, C14H7Cl3N2O, CAS 161716-22-9
2-(2,4,6-Trichlorophenyl)-1(2H)-phthalazinone
CAS 161716-22-9C14H7Cl3N2O
2-(2,4-Dichlorophenyl)-1(2H)-phthalazinone chemical structure, C14H8Cl2N2O, CAS 478048-27-0
2-(2,4-Dichlorophenyl)-1(2H)-phthalazinone
CAS 478048-27-0C14H8Cl2N2O
2-(4-Bromophenyl)phthalazin-1(2H)-one chemical structure, C14H9BrN2O, CAS 128174-79-8
2-(4-Bromophenyl)phthalazin-1(2H)-one
CAS 128174-79-8C14H9BrN2O