Naphthol AS-E

Modify Date: 2025-08-27 10:19:33

Naphthol AS-E Structure
Naphthol AS-E structure
Common Name Naphthol AS-E
CAS Number 92-78-4 Molecular Weight 297.73600
Density 1.399 g/cm3 Boiling Point 416.5ºC at 760 mmHg
Molecular Formula C17H12ClNO2 Melting Point 255°C
MSDS N/A Flash Point 205.7ºC

 Use of Naphthol AS-E


Naphthol AS-E is a potent and cell-permeable inhibitor of KIX-KID interaction. Naphthol AS-E directly binds to the KIX domain of CBP (Kd:8.6 µM), blocks the interaction between the KIX domain and the KID domain of CREB with IC50 of 2.26 µM. Naphthol AS-E can be used for cancer research.

 Names

Name N-(4-chlorophenyl)-3-hydroxynaphthalene-2-carboxamide
Synonym More Synonyms

 Naphthol AS-E Biological Activity

Description Naphthol AS-E is a potent and cell-permeable inhibitor of KIX-KID interaction. Naphthol AS-E directly binds to the KIX domain of CBP (Kd:8.6 µM), blocks the interaction between the KIX domain and the KID domain of CREB with IC50 of 2.26 µM. Naphthol AS-E can be used for cancer research.
Related Catalog
Target

KIX-KID:2.26 μM (IC50)

In Vitro CREB (cyclic AMP-response element-binding protein) is a downstream transcription factor of a multitude of signaling pathways emanating from receptor tyrosine kinases or G-protein coupled receptors. CREB can not be activated until it is phosphorylated at Ser133 and its subsequent binding to CREB-binding protein (CBP) through the kinase-inducible domain (KID) in CREB and KID-interacting (KIX) domain in CBP. In a cell-based CREB Renilla luciferase reporter assay, Naphthol AS-E inhibits CREB-mediated gene transcription with an IC50 of 2.29 µM. In HEK293T-based complementation assay, Naphthol AS-E dose-dependently inhibited Renilla luciferase activity with an IC50 of 2.9 µM by directly binding to CBP's KIX domain (Kd ~8.6 µM using a recombinant KIX). Naphthol AS-E exhibits low µM activity in inhibiting the proliferation of all these cancer cells, which is consistent with its cellular CREB inhibition potency. The average GI50 values for A549, MCF-7, MDA-MB-231 and MDA-MB-468 are approximately 2.9µM, 2.81µM, 2.35µM and 1.46µM, respectively. Naphthol AS-E (2.5 µM-10 µM; 48 hours) decreases the expression of anti-apoptotic protein Bcl-2. The expression of VEGF is also decreased.
References

[1]. Fuchun Xie, et al. Synthesis and Evaluation of an O-Aminated Naphthol AS-E as a Prodrug of CREB-mediated Gene Transcription Inhibition. Lett Org Chem. 2013 Jun;10(5):380-384.

[2]. Bingbing X Li, et al. Discovery of a small-molecule inhibitor of the KIX-KID interaction. Chembiochem. 2009 Nov 23;10(17):2721-4.

 Chemical & Physical Properties

Density 1.399 g/cm3
Boiling Point 416.5ºC at 760 mmHg
Melting Point 255°C
Molecular Formula C17H12ClNO2
Molecular Weight 297.73600
Flash Point 205.7ºC
Exact Mass 297.05600
PSA 49.33000
LogP 4.52410
Index of Refraction 1.735
InChIKey OHAXNCGNVGGWSO-UHFFFAOYSA-N
SMILES O=C(Nc1ccc(Cl)cc1)c1cc2ccccc2cc1O

 Safety Information

Hazard Codes Xn
Risk Phrases R42/43:May cause sensitization by inhalation and skin contact .
Safety Phrases S7-S36-S24/25
WGK Germany 3
RTECS MR0176000
HS Code 29053980

 Customs

HS Code 2924299090
Summary 2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

 Naphthol AS-EBioassay

View more

Name: Cytotoxicity against HMEC assessed as decrease in cell viability at >10 uM after 48 h...
Source: ChEMBL
Target: HMEC
External Id: CHEMBL2215765
Name: Cytotoxicity against HMEC assessed as effect on cell viability at less than or equal ...
Source: ChEMBL
Target: HMEC
External Id: CHEMBL2215766
Name: Cytotoxicity against human HFF cells assessed as effect on cell viability at 5 to 10 ...
Source: ChEMBL
Target: HFF
External Id: CHEMBL2215764
Name: Induction of apoptosis in human A549 cells assessed as early apoptotic cells at 7.5 u...
Source: ChEMBL
Target: A549
External Id: CHEMBL2216202
Name: Induction of apoptosis in human A549 cells assessed as viable cells at 7.5 uM after 4...
Source: ChEMBL
Target: A549
External Id: CHEMBL2216203
Name: Induction of apoptosis in human A549 cells assessed as necrotic cells at 7.5 uM after...
Source: ChEMBL
Target: A549
External Id: CHEMBL2216200
Name: Induction of apoptosis in human A549 cells assessed as late apoptotic cells at 7.5 uM...
Source: ChEMBL
Target: A549
External Id: CHEMBL2216201
Name: Anti-neuronal activity against hippocampal neuron in Wistar rat assessed as blocked t...
Source: ChEMBL
Target: N/A
External Id: CHEMBL5713447
Name: Anti-neuronal activity against hippocampal neuron in Wistar rat assessed as H3K27Ac p...
Source: ChEMBL
Target: N/A
External Id: CHEMBL5713449
Name: Anti-neuronal activity against hippocampal neuron in Wistar rat assessed as blocked t...
Source: ChEMBL
Target: N/A
External Id: CHEMBL5713448
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 Synonyms

MFCD00021639
Amanil Naphthol AS-E
Cibanaphthol RC
3-hydroxy-naphthalene-2-carboxylic acid 4-chloro-anilide
3-Hydroxy-[2]naphthoesaeure-(4-chlor-anilid)
naphthol AS-E
EINECS 202-189-7
Naphtoelan E
Naphtazol E
Naphtanilide E
4'-Chloro-3-hydroxy-2-naphthanilide
Sanatol E
3-hydroxy-[2]naphthoic acid-(4-chloro-anilide)
Daito Grounder E
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