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Merck
CN

SML4176

MCU-i4

≥98% (HPLC), powder, mitochondrial calcium uniporter blocker

Synonym(s):

4-[[4-(Diethylamino)phenyl]amino]-6-methyl-3-quinolinecarboxylic acid ethyl ester, Ethyl 4-[[4-(diethylamino)phenyl]amino]-6-methyl-3-quinolinecarboxylate, MCU i4, MCUi4

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About This Item

Empirical Formula (Hill Notation):
C23H27N3O2
CAS Number:
Molecular Weight:
377.48
MDL number:
NACRES:
NA.21
Assay:
≥98% (HPLC)
Form:
powder
Quality level:
Technical Service
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Quality Level

assay

≥98% (HPLC)

form

powder

color

faint green to dark yellow

solubility

DMSO: 2 mg/mL, clear (warmed)

storage temp.

-10 to -25°C

SMILES string

O=C(C1=CN=C2C=CC(C)=CC2=C1NC3=CC=C(N(CC)CC)C=C3)OCC

Application

MCU-i4 may be used as a mitochondrial calcium uniporter (MCU) inhibitor to study its effects on cell viability, apoptosis, cytosolic Ca²⁺ levels, mitochondrial Ca²⁺ and membrane potential, glycolytic rate, ATP production, and reactive oxygen species generation in breast cancer cells.

Biochem/physiol Actions

MCU-i4 is a mitochondrial calcium uniporter (MCU) inhibitor that selectively suppresses MCU complex-mediated mitochondrial Ca2+ uptake via direct interaction with MICU1. MCU-i4 (10 μM) effectively inhibits agonist-induced mitochondria Ca2+ uptake in intact cells (agonist = 100 μM histamine when using HeLa, 100 μM ATP when using MEF, MDA-MB-231, and HEK293A), exhibiting no effect in cells expressing MICU1 mutant construct (Q302A, Q306A, L443A) that does not bind MCU-i4 or in MICU1-, but not MICU2-, silenced cells.


pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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Edmund Cheung So et al.
Oncology research, 33(2), 397-406 (2025-01-27)
Mitochondrial Ca2+ uniporter (MCU) provides a Ca2+ influx pathway from the cytosol into the mitochondrial matrix and a moderate mitochondrial Ca2+ rise stimulates ATP production and cell growth. MCU is highly expressed in various cancer cells including breast cancer cells
Alejandro Marmolejo-Garza et al.
Cell death & disease, 14(11), 772-772 (2023-11-26)
Ferroptosis is an iron- and reactive oxygen species (ROS)-dependent form of regulated cell death, that has been implicated in Alzheimer's disease and Parkinson's disease. Inhibition of cystine/glutamate antiporter could lead to mitochondrial fragmentation, mitochondrial calcium ([Ca2+]m) overload, increased mitochondrial ROS
Tianyang Lan et al.
International journal of molecular sciences, 23(15) (2022-08-13)
Oocyte vitrification has been widely used in the treatment of infertility and fertility preservation. However, vitrification-induced mitochondrial damage adversely affects oocyte development. Several studies have reported that mitochondrial calcium uptake protein 1 (MICU1) regulates the uptake of mitochondrial calcium by



Global Trade Item Number

SKUGTIN
SML4176-50MG04065272654326
SML4176-10MG04065272654319