IBMX(NSC165960; SC2964) is a competitive nonselective PDEs inhibitor with IC50 of 2-50 uM but does not inhibit PDE8 or PDE9; nonselective adenosine receptor antagonist.

PF-05180999 (PF 5180999) is a potent, selective, brain-penetrating and orally bioavailable phosphodiesterase 2A (PDE2A) inhibitor with IC50 of 1 nM.

PDE4-IN-4 is a dual M3 (pIC50 = 10.2) antagonist-PDE4 (pIC50 = 8.8) inhibitor for the inhaled treatment of pulmonary diseases.

Bay 60-7550 is a potent PDE2 inhibitor with IC50 values of 2.0 nM (bovine) and 4.7 nM (human); 50-fold more selective for PDE2 compared to PDE1 and greater than 100-fold selective compared to PDE5, PDE3B, PDE4B, PDE7B, PDE8A, PDE9A, PDE10A, and PDE11A.

PDE4-IN-3 is a novel and orally active PDE4 inhibitor with potent inhibitory affinity (IC50 = 4.2 nM).

N-Desmethyl Sildenafil (Desmethylsildenafil) is a major metabolite of Sildenafil. Sildenafil is a potent phosphodiesterase type 5 (PDE5) inhibitor.

Ro 20-1724 (Ro 20-174) is a potent inhibitor of cAMP-specific phosphodiesterase (PDE4/PDE IV) with a Ki of 1930 nM. Neuroprotective effect.

Irsenontrine (E2027) is an orally active and selective phosphodiesterase 9 (PDE 9) inhibitor. Irsenontrine can be used for the research of neurological diseases.

Orismilast (LEO-32731) is a PDE4 inhibitor used for the research of inflammatory diseases.

Carbazeran (citrate), a potent phosphodiesterase inhibitor, is aldehyde oxidase substrate. Carbazeran (citrate) can be used for the research of metabolic disease.

Senazodan (MCI 154) (hydrochloride), as a Ca2+ sensitiser, shows inhibition effect on PDE III.

PF-8380 hydrochloride is a potent autotaxin inhibitor with an IC50 of 2.8 nM in isolated enzyme assay and 101 nM in human whole blood.

Tovinontrine (IMR-687) is a highly potent and selective phosphodiesterase-9 (PDE9) inhibitor specifically for the treatment of sickle cell disease. IC50s are 8.19 nM and 9.99 nM for PDE9A1 and PDE9A2, respectively.

LASSBio-1632 is a new anti-asthmatic lead candidate associated with selective inhibition of PDE4A and PDE4D isoenzymes and blockade of airway hyper-reactivity (AHR) and TNF-α production in the lung tissue. LASSBio-1632 (7j) displays high experimental BBB permeability across BBB through passive diffusion.

FR-229934 is a PDE V inhibitor extracted from patent WO2019130052A1. FR-229934 can be used for the research of pulmonary arterial hypertension and erectile dysfunction.

Sildenafil-d3 is deuterium labeled Sildenafil-d3. Sildenafil (UK-92480) is a potent phosphodiesterase type 5 (PDE5) inhibitor with an IC50 of 5.22 nM.

(+)-Medioresinol Di-O-β-D-glucopyranoside is a lignan glucoside with strong inhibitory activity of 3', 5'-cyclic monophosphate (cyclic AMP) phosphodiesterase.

Vardenafil (BAY38-9456, Levitra, Staxyn) hydrochloride is a selective, orally active, potent inhibitor of phosphodiesterase (PDE) with IC50 of 0.7 nM, 11 nM and 180 nM for PDE5, PDE6 and PDE1, respectively.

Kushenol B is an isoprenoid flavonoid isolated from S. flavescens, has antimicrobial, anti-inflammatory and antioxidant activities. Kushenol B has inhibitory activity against cAMP phosphodiesterase (PDE), with an IC50 of 31 μM.

Ilexsaponin B2 is a saponin isolated from the root of Ilex pubescens Hook. et Arn. Ilexsaponin B2 is a potent phosphodiesterase 5 (PDE5) and PDEI inhibitor with IC50 values of 48.8 μM and 477.5 μM, respectively.

Ayanin is a bioflavonoid isolated from Croton schiedeanus Schlecht. Ayanin is a non-selective phosphodiesterase1-4 inhibitor and can be used for the study of respiratory disease,such as allergic asthma et al.

3-O-Methylquercetin (3-MQ), a main constituent of Rhamnus nakaharai, inhibits total cAMP and cGMP-phosphodiesterase (PDE) of guinea pig trachealis. 3-O-Methylquercetin (3-MQ) exhibits IC50 values of 31.9 μM， 86.9 μM， 18.6 μM and 1.6 μM for PDE1, PDE5, PDE2 and PDE4, respectively.

Acetildenafil is a derivative of the phosphodiesterase 5 (PDE5) inhibitor Sildenafil.

BRD9500 is an orally active phosphodiesterases 3 (PDE3) inhibitor with IC50s of 10 and 27 nM for PDE3A and PDE3B, respectively. Antitumor activity.

Homo Sildenafil, an analog of Sildenafil, acts as a phosphodiesterase inhibitor.

Kuraridine is a prenylated flavonol extract from the roots of?Sophora flavescens. Kuraridine an inhibitory effect on cGMP specific phosphodiesterase type 5?(PDE5) and has an IC50 of 0.64 μM.

GSK356278 is a potent, selective, orally bioavailable and brain-penetrant inhibitor of phosphodiesterase 4 (PDE4), with pIC50s of 8.6, 8.8, and 8.7 for human PDE4A, PDE4B, and PDE4D, respectively. GSK356278 has anti-inflammatory activity, and exhibits anxiolytic and cognition-enhancing effects.

LY-411575 isomer 3 is an isomer of LY411575, which is a potent γ-secretase.

Autotaxin modulator 1 is an autotaxin (ATX) enzyme, extracted from patent WO 2014018881 A1, Compound Example 12b. Autotaxin modulator 1 is expected to be useful for researching demyelination due to injury or disease, as well as for researching proliferative disorders such as cancer.

ent-Tadalafil (ent-IC-351), compound (6S,12aS), is a inactive cis-enantiomer of compound (6R,12aS). compound (6R,12aS) is a potent PDE5 inhibitor with an IC50 of 0.090 μM, while ent-Tadalafil is inactive at concentrations up to 10 µM.