1. Epigenetics
  2. Epigenetic Reader Domain
  3. KG-501

KG-501 (Synonyms: Naphthol AS-E phosphate)

Cat. No.: HY-103299 Purity: 99.12%
Handling Instructions

KG-501 is a CREB inhibitor, with an IC50 of 6.89 μM.

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

KG-501 Chemical Structure

KG-501 Chemical Structure

CAS No. : 18228-17-6

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 55 In-stock
Estimated Time of Arrival: December 31
5 mg USD 50 In-stock
Estimated Time of Arrival: December 31
10 mg USD 70 In-stock
Estimated Time of Arrival: December 31
50 mg USD 160 In-stock
Estimated Time of Arrival: December 31
100 mg   Get quote  
200 mg   Get quote  

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Customer Review

Top Publications Citing Use of Products
  • Biological Activity

  • Technical Information

  • Purity & Documentation

  • References


KG-501 is a CREB inhibitor, with an IC50 of 6.89 μM.

IC50 & Target

IC50: 6.89 μM (CREB)[1].

In Vitro

KG-501, which directly targets the KIX domain of CBP, results in a disrupted CREB-CBP complex, inhibits CREB-target gene induction, and inhibits IL-1β-mediated angiogenic activity in NSCLC[1]. KG-501 disrupts phospho (Ser-133) CREB binding to KIX with a Ki of ~90 μM, using concentrations of CREB that are within the linear range of the binding assay. Treatment of HEK293T cells with KG-501 also blocks induction of endogenous CREB target genes (NR4A2, αCG, c-fos, and RGS2) by forskolin, indicating that KG-501 likely exerts a general effect on CREB activity[2]. KG-501 can also inhibit NF-κB transcription activity because NF-κB also uses CBP as a cofactor to regulate gene expression. The migration of HUVECs induced by CM from A549 cells treated with IL-1β plus 10 μM of KG-501 is significantly lower than that induced by CM from A549 cells treated with IL-1β alone. At 10 μM, KG-501 suppresses the expression of all of the IL-1β–induced CXC chemokine genes except CXCL8. For the protein level, KG-501 significantly suppresses IL-1β–induced CXCL5 protein secretion. Similar effects of KG-501 are also observed in the H1734 cell line[3].

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 6 mg/mL (15.88 mM; Need ultrasonic and warming)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6475 mL 13.2373 mL 26.4746 mL
5 mM 0.5295 mL 2.6475 mL 5.2949 mL
10 mM 0.2647 mL 1.3237 mL 2.6475 mL
*Please refer to the solubility information to select the appropriate solvent.
Molecular Weight









Room temperature in continental US; may vary elsewhere

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Cat. No.: HY-103299