1. Epigenetics
  2. Epigenetic Reader Domain
    Histone Acetyltransferase


Cat. No.: HY-100482 Purity: 99.94%
Handling Instructions

CPI-637 is a potent and selective CBP/EP300 bromodomains inhibitor with IC50 of 0.03±0.01μM and 11.0±0.6 μM for CBP/EP300 and BRD4, respectively.

For research use only. We do not sell to patients.
CPI-637 Chemical Structure

CPI-637 Chemical Structure

CAS No. : 1884712-47-3

Size Price Stock Quantity
Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 106 In-stock
5 mg USD 96 In-stock
10 mg USD 144 In-stock
50 mg USD 480 In-stock
100 mg USD 864 In-stock
200 mg   Get quote  
500 mg   Get quote  

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Customer Review

  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


CPI-637 is a potent and selective CBP/EP300 bromodomains inhibitor with IC50 of 0.03±0.01μM and 11.0±0.6 μM for CBP/EP300 and BRD4, respectively. IC50:0.03±0.01μM (CBP/EP300)[1] IC50:11.0±0.6 μM(BRD4)[1] CPI-637, which demonstrated substantial biochemical potency that was confirmed by isothermal titration calorimetry. A cocrystal structure of CPI-637 in the CBP bromodomain indicated that the compound recapitulated the key hydrogen bonding interactions observed with the parent compound, with the substituted indazole filling space above Pro1110 and the Pro/Arg cleft . As expected, CPI-637 was also potent against EP300, and its opposite enantiomer displayed a >200-fold loss in potency. The biochemical potency of CPI-637 translated well into cells (CBP BRET EC50 = 0.3 μM), and the compound demonstrated a >700-fold selectivity over the BET family of bromodomains (BRD4 IC50 = 11.0 ± 0.6 μM).CPI-637 was also highly selective against other bromodomains (detailed list in the Supporting Information), displaying substantial biochemical activity only against BRD9, which is acceptable, since inhibition of the BRD9 bromodomain has not been shown to produce a pronounced cellular phenotype . In a cellular assay, CPI-637 inhibits the expression of MYC, a transcription factor widely expressed in human cancer,with an EC50 of 0.60 μM, providing an orthogonal measure of the target engagement of the compound .The inactive enantiomer of CPI-637 displayed an EC50 in the same assay of >10 μM.[1]

Preparing Stock Solutions
Concentration Volume Mass 1 mg 5 mg 10 mg
1 mM 2.5877 mL 12.9383 mL 25.8766 mL
5 mM 0.5175 mL 2.5877 mL 5.1753 mL
10 mM 0.2588 mL 1.2938 mL 2.5877 mL
Please refer to the solubility information to select the appropriate solvent.
Molecular Weight







O=C1NC2=CC=CC(C3=CC4=C(N(C)N=C4C5=CN(C)N=C5)C=C3)=C2N[[email protected]](C)C1

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

Solvent & Solubility


* "<1 mg/mL" means slightly soluble or insoluble. "≥" means soluble, but saturation unknown.

Purity: 99.94%

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