| Sodium | IC50 | 9680000.0 [1], 16000000.0 [2] |
| Bufrolin | IC50 | 970000.0 [1], 2220000.0 [2] |
| Zaprinast | IC50 | 6250000.0 [1] |
| Methylphosphonic acid | Ki | 11000000.0 [1] |
| Benzylphosphonic acid | Ki | 580000.0 [1] |
| Methylphosphonothiolate | Ki | 19000000.0 [1] |
| Propylphosphonic acid | Ki | 1550000.0 [1] |
| 11-Oxo-11H-pyrido[2,1-b]quinazoline-6-carboxylic acid | IC50 | 800000.0 [1] |
| 2-Methoxy-11-oxo-11H-pyrido(2,1-b)quinazoline-8-carboxylic acid | IC50 | 100000.0 [1] |
| 1-(3,4-Dihydroxyphenyl)-2-(1-imidazolyl)ethanone | IC50 | 1200.0 [1] |
| 1-(3,4-Dihydroxyphenyl)-2-[(4,6-dimethyl-2-pyrimidinyl)thio]ethanone | IC50 | 600.0 [1] |
| 6-Phosphonohexanoic Acid | Ki | 7000000.0 [1] |
| 2-Methyl-11-oxo-11H-pyrido(2,1-b)quinazoline-8-carboxylic acid | IC50 | 160000.0 [1] |
| 11-Oxopyrido[2,1-b]quinazoline-7-carboxylic acid | IC50 | 170000.0 [1] |
| 12-Oxo-12H-benzo[g]pyrido[2,1-b]quinazoline-4-carboxylic acid | IC50 | 710000.0 [1] |
| 2-Hydroxy-11-oxopyrido[2,1-b]quinazoline-8-carboxylic acid | IC50 | 280000.0 [1] |
| 2,3-Dimethoxy-11-oxo-11H-pyrido[2,1-b]quinazoline-8-carboxylic acid | IC50 | 410000.0 [1] |
| 2,3-Dihydroxy-11-oxopyrido[2,1-b]quinazoline-8-carboxylic acid | IC50 | 220000.0 [1] |
| Butyl-phosphonothioic acid | Ki | 600000.0 [1] |
| 12H-Benzo(g)pyrido(2,1-b)quinazoline-2-carboxylic acid, 12-oxo- | IC50 | 180000.0 [1] |
| 7-(Dihydroxyphosphinothioylmethyl)naphthalene-1-carboxylic acid | Ki | 1500000.0 [1] |
| Methylsulfanylmethyl-phosphonothioic acid | Ki | 40000.0 [1] |
| 7-(Phosphonomethyl)-1-naphthoic acid | Ki | 390000.0 [1] |
| Phenylsulfanylmethyl-phosphonothioic acid | Ki | 460000.0 [1] |
| 6-Thiophosphono-hexanoic acid methyl ester | Ki | 330000.0 [1] |
| Benzyl-phosphonothioic acid | Ki | 200000.0 [1] |
| 6-Thiophosphono-hexanoic acid | Ki | 1500000.0 [1] |
| 3-Methoxy-8-(2H-tetrazol-5-yl)pyrido[2,1-b]quinazolin-11-one | IC50 | 620000.0 [1] |
| 2-(2H-Tetrazol-5-yl)-12H-benzo[g]pyrido[2,1-b]quinazolin-12-one | IC50 | 230000.0 [1] |
| 2-Methoxy-8-(2H-tetrazol-5-yl)pyrido[2,1-b]quinazolin-11-one | IC50 | 140000.0 [1] |
| 8-(2H-Tetrazol-5-yl)pyrido[2,1-b]quinazolin-11-one | IC50 | 280000.0 [1] |
| 2-Methyl-8-(2H-tetrazol-5-yl)pyrido[2,1-b]quinazolin-11-one | IC50 | 210000.0 [1] |
| 2,3-Dimethoxy-8-(2H-tetrazol-5-yl)pyrido[2,1-b]quinazolin-11-one | IC50 | 340000.0 [1] |
| 6-(2H-Tetrazol-5-yl)-13,15-dioxa-2,8-diazatetracyclo[8.7.0.03,8.012,16]heptadeca-1(17),2,4,6,10,12(16)-hexaen-9-one | IC50 | 230000.0 [1] |
| 11-Oxo-11H-pyrido[2,1-b]quinazoline-8-carboxylic acid | IC50 | 350000.0 [1] |
| 4-Oxopyrido[1,2-a]pyrimidine-7-carboxylic acid | IC50 | 10000000.0 [1] |
| 1-(3,4-Dihydroxyphenyl)-2-(2-ethyl-1-imidazolyl)ethanone | IC50 | 1700.0 [1] |
| 2-(1H-Benzimidazol-2-ylamino)-1-(3,4-dihydroxyphenyl)ethanone | IC50 | 6200.0 [1] |
| 1-(3,4-Dihydroxyphenyl)-2-(2-methyl-1-imidazolyl)ethanone | IC50 | 30500.0 [1] |
| 2-(Benzimidazol-1-yl)-1-(3,4-dihydroxyphenyl)ethanone | IC50 | 2700.0 [1] |
| 1-(3,4-Dihydroxyphenyl)-2-(2-methyl-1-benzimidazolyl)ethanone | IC50 | 9400.0 [1] |
| 2,3,4,11-Tetrahydro-1H-pyrido[2,1-b]quinazoline-8-carboxylic acid | IC50 | 10000000.0 [1] |