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Details

Stereochemistry ABSOLUTE
Molecular Formula C20H30N2O4
Molecular Weight 362.4632
Optical Activity UNSPECIFIED
Defined Stereocenters 2 / 2
E/Z Centers 0
Charge 0

SHOW SMILES / InChI
Structure of CALPEPTIN

SMILES

CCCC[C@H](NC(=O)[C@H](CC(C)C)NC(=O)OCC1=CC=CC=C1)C=O

InChI

InChIKey=PGGUOGKHUUUWAF-ROUUACIJSA-N
InChI=1S/C20H30N2O4/c1-4-5-11-17(13-23)21-19(24)18(12-15(2)3)22-20(25)26-14-16-9-7-6-8-10-16/h6-10,13,15,17-18H,4-5,11-12,14H2,1-3H3,(H,21,24)(H,22,25)/t17-,18-/m0/s1

HIDE SMILES / InChI

Molecular Formula C20H30N2O4
Molecular Weight 362.4632
Charge 0
Count
Stereochemistry ABSOLUTE
Additional Stereochemistry No
Defined Stereocenters 2 / 2
E/Z Centers 0
Optical Activity UNSPECIFIED

Сalpeptin is useful cell-penetrative calpain inhibitor. Calpeptin inhibits the cell growth of ER (estrogen receptor) positive breast cancer cells, such as MCF-7, T-47D, and ZR-75-1 in the presence of Estradiol. Studies in rodent and cell culture models of Parkinson's disease suggest that treatment with calpain inhibitor calpeptin can prevent neuronal death and restore functions. The combination of histone deacetylase inhibitors and calpeptin inhibited the growth of two distinctly different types of breast cancer cells and could have wide clinical applications. Calpeptin is a promising antitumor agent for pancreatic cancer.

Approval Year

Targets

Targets

Primary TargetPharmacologyConditionPotency
0.04 µM [IC50]
0.034 µM [IC50]
Conditions

Conditions

ConditionModalityTargetsHighest PhaseProduct
Primary
Unknown

Approved Use

Unknown
Primary
Unknown

Approved Use

Unknown
Primary
Unknown

Approved Use

Unknown
PubMed

PubMed

TitleDatePubMed
Calpain inhibitor calpeptin suppresses pancreatic cancer by disrupting cancer-stromal interactions in a mouse xenograft model.
2016-10
Amelioration of cisplatin-induced experimental peripheral neuropathy by a small molecule targeting p75 NTR.
2014-12
Anti-breast cancer effects of histone deacetylase inhibitors and calpain inhibitor.
2012-07
Distinct regulatory functions of calpain 1 and 2 during neural stem cell self-renewal and differentiation.
2012
Neuroprotective effects of MAPK/ERK1/2 and calpain inhibitors on lactacystin-induced cell damage in primary cortical neurons.
2011-12
P73 regulates cisplatin-induced apoptosis in ovarian cancer cells via a calcium/calpain-dependent mechanism.
2011-10-13
Dehydroeburicoic acid induces calcium- and calpain-dependent necrosis in human U87MG glioblastomas.
2009-11
Calpain as a potential therapeutic target in Parkinson's disease.
2008-06
Mechanism of arsenic-induced neurotoxicity may be explained through cleavage of p35 to p25 by calpain.
2008-04
Cadmium induces Ca2+-dependent necrotic cell death through calpain-triggered mitochondrial depolarization and reactive oxygen species-mediated inhibition of nuclear factor-kappaB activity.
2007-03
Degraded collagen induces calpain-mediated apoptosis and destruction of the X-chromosome-linked inhibitor of apoptosis (xIAP) in human vascular smooth muscle cells.
2006-02-15
Arsenic trioxide-induced death of neuroblastoma cells involves activation of Bax and does not require p53.
2004-05-01
Inhibition of proteolysis by a cyclooxygenase inhibitor, indomethacin.
2000-11
Role of calpain in spinal cord injury: effects of calpain and free radical inhibitors.
1998-05-30
Mechanism of growth inhibition by calpain inhibitor in MCF-7 cells.
1997-05-01
Role of intracellular proteases in differentiation of L6 myoblast cells.
1994-03
Synthesis of a new cell penetrating calpain inhibitor (calpeptin).
1988-06-30
Patents

Sample Use Guides

Mice: 0.04 mg three times a week for 4 weeks
Route of Administration: Intraperitoneal
Calpeptin suppressed the proliferation of SW1990 cells at high doses (>20 uM), whereas calpeptin did not suppress proliferation at low doses (1 or 10 uM; P<0.05). The IC50 value was 74.2 uM. Calpeptin similarly suppressed the proliferation of SUIT-2 cells and inhibited the migration (P < 0.05) and invasion (P < 0.05) of pancreatic cancer cells.
Substance Class Chemical
Created
by admin
on Mon Mar 31 19:03:28 GMT 2025
Edited
by admin
on Mon Mar 31 19:03:28 GMT 2025
Record UNII
18X9FR245W
Record Status Validated (UNII)
Record Version
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Name Type Language
CALPEPTIN
Common Name English
BENZYLCARBONYL-LEU-NLEU-H
Preferred Name English
N-CBZ-LEU-NLEU-AL
Common Name English
CARBAMIC ACID, N-((1S)-1-((((1S)-1-FORMYLPENTYL)AMINO)CARBONYL)-3-METHYLBUTYL)-, PHENYLMETHYL ESTER
Systematic Name English
Code System Code Type Description
CAS
117591-20-5
Created by admin on Mon Mar 31 19:03:28 GMT 2025 , Edited by admin on Mon Mar 31 19:03:28 GMT 2025
PRIMARY
FDA UNII
18X9FR245W
Created by admin on Mon Mar 31 19:03:28 GMT 2025 , Edited by admin on Mon Mar 31 19:03:28 GMT 2025
PRIMARY
EPA CompTox
DTXSID90922464
Created by admin on Mon Mar 31 19:03:28 GMT 2025 , Edited by admin on Mon Mar 31 19:03:28 GMT 2025
PRIMARY
PUBCHEM
73364
Created by admin on Mon Mar 31 19:03:28 GMT 2025 , Edited by admin on Mon Mar 31 19:03:28 GMT 2025
PRIMARY
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