Date published: 2026-5-25

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CI 994 (CAS 112522-64-2)

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Alternate Names:
Acetyldinaline, Tacedinaline; N-acetyldinaline
Application:
CI 994 is an HDAC1, HDAC3, HDAC6, and HDAC8 inhibitor
CAS Number:
112522-64-2
Purity:
≥98%
Molecular Weight:
269.3
Molecular Formula:
C15H15N3O2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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CI 994 is an HDAC (histone deacetylase) inhibitor for HDAC1 (Ki = 0.41 μM), HDAC3 (Ki = 0.75 μM), HDAC6 (Ki >100 μM), and HDAC8 (Ki >100 μM). CI 994 is an inhibitor of HDAC2. It induces apoptosis and mediates G1 cell cycle arrest.


CI 994 (CAS 112522-64-2) References

  1. Modulation of histone acetylation by [4-(acetylamino)-N-(2-amino-phenyl) benzamide] in HCT-8 colon carcinoma.  |  Kraker, AJ., et al. 2003. Mol Cancer Ther. 2: 401-8. PMID: 12700284
  2. Distinct pharmacological properties of second generation HDAC inhibitors with the benzamide or hydroxamate head group.  |  Beckers, T., et al. 2007. Int J Cancer. 121: 1138-48. PMID: 17455259
  3. CI-994 (N-acetyl-dinaline) in combination with conventional anti-cancer agents is effective against acute myeloid leukemia in vitro and in vivo.  |  Hubeek, I., et al. 2008. Oncol Rep. 19: 1517-23. PMID: 18497959
  4. Histone deacetylase inhibitor CI-994 inhibits osteoclastogenesis via suppressing NF-κB and the downstream c-Fos/NFATc1 signaling pathways.  |  Guo, D., et al. 2019. Eur J Pharmacol. 848: 96-104. PMID: 30682334
  5. Combination Treatment of CI-994 With Etoposide Potentiates Anticancer Effects Through a Topoisomerase II-Dependent Mechanism in Atypical Teratoid/Rhabdoid Tumor (AT/RT).  |  Kim, HY., et al. 2021. Front Oncol. 11: 648023. PMID: 34367950
  6. Epigenetic therapy combination of UNC0638 and CI-994 suppresses breast cancer via epigenetic remodeling of BIRC5 and GADD45A.  |  Lin, HY., et al. 2022. Biomed Pharmacother. 145: 112431. PMID: 34798471
  7. The HDAC inhibitor CI-994 acts as a molecular memory aid by facilitating synaptic and intracellular communication after learning.  |  Burns, AM., et al. 2022. Proc Natl Acad Sci U S A. 119: e2116797119. PMID: 35613054
  8. Tacedinaline (CI-994), a class I HDAC inhibitor, targets intrinsic tumor growth and leptomeningeal dissemination in MYC-driven medulloblastoma while making them susceptible to anti-CD47-induced macrophage phagocytosis via NF-kB-TGM2 driven tumor inflammation.  |  Marquardt, V., et al. 2023. J Immunother Cancer. 11: PMID: 36639156
  9. Preclinical antitumor activity of CI-994.  |  LoRusso, PM., et al. 1996. Invest New Drugs. 14: 349-56. PMID: 9157069
  10. Preclinical pharmacokinetic, antitumor and toxicity studies with CI-994 (correction of CL-994) (N-acetyldinaline).  |  Foster, BJ., et al. 1997. Invest New Drugs. 15: 187-94. PMID: 9387041

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

CI 994, 10 mg

sc-205245
10 mg
$99.00

CI 994, 50 mg

sc-205245A
50 mg
$536.00