1. Metabolic Enzyme/Protease
  2. Phosphodiesterase (PDE)

AN-2728 (Synonyms: Crisaborole)

Cat. No.: HY-10978 Purity: 99.97%
Handling Instructions

AN-2728 is a potent inhibitor of PDE4 and cytokine release; inhibit PDE4 with an IC50 of 0.49 μM.

For research use only. We do not sell to patients.

AN-2728 Chemical Structure

AN-2728 Chemical Structure

CAS No. : 906673-24-3

Size Price Stock Quantity
Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 50 In-stock
Estimated Time of Arrival: December 31
10 mg USD 42 In-stock
Estimated Time of Arrival: December 31
50 mg USD 59 In-stock
Estimated Time of Arrival: December 31
100 mg USD 92 In-stock
Estimated Time of Arrival: December 31
200 mg   Get quote  
500 mg   Get quote  

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  • Biological Activity

  • Technical Information

  • Purity & Documentation

  • References


AN-2728 is a potent inhibitor of PDE4 and cytokine release; inhibit PDE4 with an IC50 of 0.49 μM.

IC50 & Target

IC50: 0.49 μM (PDE4)[1]

In Vitro

AN-2728 inhibits PDE4, TNF-α, IL-2, IFN-γ, IL-5 and IL-10 with IC50 values of 0.49, 0.54, 0.61, 0.83, 2.4 and 5.3 μM. AN-2728 shows the most potent activity against PDE4 catalytic domain, but it also shows inhibition against PDE1A3, PDE3Cat, and PDE7A1. AN-2728 inhibits PDE isozymes PDE1A3, PDE3Cat , PDE4Cat and PDE7A1 with IC50 values of 6.1, 6.4, 0.11 and 0.73 μM[1]. Crystallography reveals that interaction of benzoxaboroles with the hydrophobic pocket in the PDE4 catalytic domain increase their affinity for PDE4. These benzoxaboroles strongly suppresses the secretion of cytokines associated with Ps and AD[2]. AN-2728 is a topically administered, boron-containing, anti-inflammatory compound that inhibits PDE4 activity and thereby suppresses the release of TNFalpha, IL-12, IL-23 and other cytokines[3].

In Vivo

AN-2728 shows significant inhibition against the ear edema caused by phorbol ester after dosing at 1 mg/ear×2 (78% and 68%, respectively). The efficacy is comparable to that of dexamethasone, suggesting that AN-2728 has good anti-inflammatory activity as well as skin penetration[1]. AN-2728 is reported to be well tolerated and to demonstrate significant effects on markers of efficacy, with results that were comparable to positive controls in clinical trials[3].

Clinical Trial
Solvent & Solubility
In Vitro: 

DMSO : ≥ 32 mg/mL (127.46 mM)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 3.9833 mL 19.9164 mL 39.8327 mL
5 mM 0.7967 mL 3.9833 mL 7.9665 mL
10 mM 0.3983 mL 1.9916 mL 3.9833 mL
*Please refer to the solubility information to select the appropriate solvent.
Molecular Weight








Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month

Room temperature in continental US; may vary elsewhere

Purity: 99.97%

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Cat. No.: HY-10978