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CPI-455

CAS No.
1628208-23-0
Chemical Name:
CPI-455
Synonyms
CPI-455;CCPI-455;CPI-455, >98%;CPI-455 ,S6389;CPI 455;CPI455;CPI-455(free base);CPI-455, 10 mM in DMSO;CPI 455;CPI-455;CPI455;CPI 455,Histone Demethylase,CPI455,CPI-455,Inhibitor,inhibit;6-Isopropyl-7-oxo-5-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile
CBNumber:
CB83129362
Molecular Formula:
C16H14N4O
Molecular Weight:
278.31
MDL Number:
MFCD29921343
MOL File:
1628208-23-0.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-07-14 16:49:18
Product description Number Pack Size Price
CPI-455 ≥98% 22127 1mg $29
CPI-455 ≥98% 22127 5mg $99
CPI-455 ≥98% 22127 10mg $169
CPI-455 ≥98% 22127 25mg $352
CPI-455 DQC20823 0.1g $259.6
More product size

CPI-455 Properties

Boiling point 488.7±55.0 °C(Predicted)
Density 1.28±0.1 g/cm3(Predicted)
storage temp. -20°C
solubility Soluble in DMSO (up to at least 25 mg/ml)
form solid
pka -5.10±0.60(Predicted)
color Off-white
Stability Stable for 1 year from date of purchase as supplied. Solutions in DMSO may be stored at -20°C for up to 3 months.

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H332-H335
Precautionary statements  P280-P305+P351+P338-P310

CPI-455 price More Price(47)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Cayman Chemical 22127 CPI-455 ≥98% 1628208-23-0 1mg $29 2026-04-30 Buy
Cayman Chemical 22127 CPI-455 ≥98% 1628208-23-0 5mg $99 2026-04-30 Buy
Cayman Chemical 22127 CPI-455 ≥98% 1628208-23-0 10mg $169 2026-04-30 Buy
Cayman Chemical 22127 CPI-455 ≥98% 1628208-23-0 25mg $352 2026-04-30 Buy
Biosynth DQC20823 CPI-455 1628208-23-0 0.1g $259.6 2026-06-04 Buy
Product number Packaging Price Buy
22127 1mg $29 Buy
22127 5mg $99 Buy
22127 10mg $169 Buy
22127 25mg $352 Buy
DQC20823 0.1g $259.6 Buy

CPI-455 Chemical Properties,Uses,Production

Description

CPI-455 (1628208-23-0) is a potent (IC50= 10 nM) and selective inhibitor of the lysine demethylase KDM5 (equal inhibition of KDM5A, 5B, 5C).1CPI-455 reduced the number of drug-tolerant persister cancer cells (DTPs) in a dose-dependent, KDM5-dependent manner in multiple cell lines treated with standard chemotherapy or targeted agents. CPI-455 synergized with 5-aza-2’-deoxycytidine (DAC) to reduce the viability of luminal breast cancer cellsin vitro.2KDM5 demethylases have recently been shown to repress the immune response to tumorsviasuppression of STING.3

Uses

CPI-455 is a potent KDM5 demethylase inhibitor.

in vivo

Dual blockade of B7-H4 and KDM5B (CPI-455, 50/70 mg/kg, ip, daily) in mice elicits protective immunity[2].

Animal Model:Six-week-old male C57BL/6 mice (One- to 2-mm fragments of P. gingivalis–positive PDXs were implanted subcutaneously into the flank region of humanized mice.)
Dosage:50 mg/kg or 70 mg/kg (combined with anti–B7-H4).
Administration:IP, daily, 14-28 days.
Result:Histopathology analysis revealed no inflammation in either group at 2 weeks in response to the primary infection. However, at 8 weeks after inoculation, mice receiving monotherapy exhibited mild inflammation, whereas the combined treatment presented with heavy to severe inflammation, which persisted at 12 and 16 weeks after challenge.
Treatment with CPI-455 to selectively target H3K4-specific JmjC demethylases increased CXCL11, CXCL9, and CXCL10 following infection, with maximum levels observed 48 hours after infection.

IC 50

KDM5

References

[1] MAIA VINOGRADOVA. An inhibitor of KDM5 demethylases reduces survival of drug-tolerant cancer cells[J]. Nature chemical biology, 2016, 12 7: 531-538. DOI:10.1038/nchembio.2085
[2] BENJAMIN R LEADEM. A KDM5 Inhibitor Increases Global H3K4 Trimethylation Occupancy and Enhances the Biological Efficacy of 5-Aza-2’-Deoxycytidine.[J]. Cancer research, 2018: 1127-1139. DOI:10.1158/0008-5472.can-17-1453
[3] LIZHEN WU. KDM5 histone demethylases repress immune response via suppression of STING.[J]. PLoS Biology, 2018, 16 8: e2006134. DOI:10.1371/journal.pbio.2006134

CPI-455 Preparation Products And Raw materials

Raw materials

Preparation Products

Global( 103)Suppliers
Supplier Tel Email Country ProdList Advantage
career henan chemical co
+86-0371-86658258 sales@coreychem.com China 29766 58
TargetMol Chemicals Inc.
+1-781-999-5354; +1-00000000000 marketing@targetmol.com United States 32431 58
BOC Sciences
16314854226; +8616314854226 inquiry@bocsci.com United States 19852 58
TargetMol Chemicals Inc.
+1-781-999-5354; support@targetmol.com United States 38999 58
Zibo Hangyu Biotechnology Development Co., Ltd
+86-0533-2185556 +86-15965530500 nickzhang@hangyubiotech.com China 9932 58
Aladdin Scientific
tp@aladdinsci.com United States 54746 58
NANJING YINGWEN BIOTECHNOLOGY CO LTD
+86-13382787392 sales@aeechem.com China 10000 58
Amadis Chemical Company Limited
571-89925085 sales@amadischem.com China 131885 58
Shanghai Lollane Biological Technology Co.,Ltd. 021-52996696,15000506266 15000506266 China 4854 55
Shanghai EFE Biological Technology Co., Ltd. 021-65675885 18964387627 info@efebio.com China 9799 58

View Lastest Price from CPI-455 manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
CPI-455 pictures 2026-07-14 CPI-455
1628208-23-0
$31.00-67.00 99.03% 10g TargetMol Chemicals Inc.
	CPI-455 pictures 2019-09-06 CPI-455
1628208-23-0
$1.00 1ASSAYS 95%~99% Career Henan Chemical Co
  • CPI-455 pictures
  • CPI-455
    1628208-23-0
  • $31.00-67.00
  • 99.03%
  • TargetMol Chemicals Inc.
  • 	CPI-455 pictures
  • CPI-455
    1628208-23-0
  • $1.00
  • 95%~99%
  • Career Henan Chemical Co

CPI-455 Spectrum

CPI 455;CPI455 CPI 455;CPI-455;CPI455 CPI-455, >98% CPI-455(free base) CPI-455 6-Isopropyl-7-oxo-5-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile Pyrazolo[1,5-a]pyrimidine-3-carbonitrile, 4,7-dihydro-6-(1-methylethyl)-7-oxo-5-phenyl- CPI 455,Histone Demethylase,CPI455,CPI-455,Inhibitor,inhibit CCPI-455 CPI-455, 10 mM in DMSO CPI-455 ,S6389 1628208-23-0