YM155 (Sepantronium Bromide) - ≥98% , CAS No.781661-94-7

CAS: 781661-94-7 Cat. No.: Y126171 Molecular Weight: 443.29 PubChem CID: 11178236
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
3-(2-METHOXYETHYL)-2-METHYL-4,9-DIOXO-1-(PYRAZIN-2-YLMETHYL)NAPHTHO[2,3-D]IMIDAZOL-1-IUM BROMIDE | bromuro de sepantronio | 3-(2-Methoxyethyl)-2-methyl-4,9-dioxo-1-pyrazin-2-ylmethyl-4,9-dihydro-3H-naphtho[2,3-d]imidazol-1-ium bromide | SEPANTRONIUM BROMI
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5mg
Y126171-5mg
3
$63.90
25mg
Y126171-25mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$242.90
100mg
Y126171-100mg
2
$744.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C Ships Ice chest + Ice pads Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

YM155 (Sepantronium Bromide) is a potent survivin suppressant by inhibiting Survivin promoter activity with IC50 of 0.54 nM in HeLa-SURP-luc and CHO-SV40-luc cells; does not significantly inhibit SV40 promoter activity, but is observed to slightly inhibited Survivin and XIAP interact.
An inhibitor of survivin expression and apoptosis inducer.

Specifications

Synonyms
3-(2-METHOXYETHYL)-2-METHYL-4, 9-DIOXO-1-(PYRAZIN-2-YLMETHYL)NAPHTHO[2, 3-D]IMIDAZOL-1-IUM BROMIDE | bromuro de sepantronio | 3-(2-Methoxyethyl)-2-methyl-4, 9-dioxo-1-pyrazin-2-ylmethyl-4, 9-dihydro-3H-naphtho[2, 3-d]imidazol-1-ium bromide | SEPANTRONIUM BROMI
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
YM155 is a small molecule inhibitor of survivin expression that acts by inhibiting the survivin gene promoter transcription. Shown to induce apoptosis and inhibit tumor growth.
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥98%
Names and Identifiers
Canonical SmilesCC1=[N+](C2=C(N1CCOC)C(=O)C3=CC=CC=C3C2=O)CC4=NC=CN=C4.[Br-]
IUPAC Name1-(2-methoxyethyl)-2-methyl-3-(pyrazin-2-ylmethyl)benzo[f]benzimidazol-3-ium-4,9-dione;bromide
InChIKeyQBIYUDDJPRGKNJ-UHFFFAOYSA-M
INCHI1S/C20H19N4O3.BrH/c1-13-23(9-10-27-2)17-18(24(13)12-14-11-21-7-8-22-14)20(26)16-6-4-3-5-15(16)19(17)25;/h3-8,11H,9-10,12H2,1-2H3;1H/q+1;/p-1
Isomeric SMILES CC1=[N+](C2=C(N1CCOC)C(=O)C3=CC=CC=C3C2=O)CC4=NC=CN=C4.[Br-]
PubChem CID 11178236
Molecular Weight 443.29

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassBenzenoids
ClassNaphthalenes
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentNaphthalenes
Alternative Parents Aryl ketones  Pyrazines  N-substituted imidazoles  Vinylogous amides  Heteroaromatic compounds  Dialkyl ethers  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Organic bromide salts  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Naphthalene - Aryl ketone - N-substituted imidazole - Pyrazine - Azole - Imidazole - Heteroaromatic compound - Vinylogous amide - Ketone - Azacycle - Ether - Dialkyl ether - Organoheterocyclic compound - Organic bromide salt - Organic salt - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Organic oxide - Organopnictogen compound - Organic oxygen compound - Organic nitrogen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as naphthalenes. These are compounds containing a naphthalene moiety, which consists of two fused benzene rings.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
PAK1 Tchem Serine/threonine-protein kinase PAK 1 (2601 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
DU-145 (51482 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PC-3 (62116 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
A549 (127892 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
HUVEC (11049 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
MDA-MB-435 (38290 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Plasmodium falciparum (966862 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CHO-K1 (1115 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
rep Replicase polyprotein 1ab (378 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Chorioallantoic membrane (375 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SARS-CoV-2 (38078 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

2 results found

Lot NumberCertificate TypeDateItem
K2323100Certificate of AnalysisSep 04, 2025 Y126171
I1522307Certificate of AnalysisDec 20, 2024 Y126171
Chemical and Physical Properties
SolubilitySoluble in water (>89 mg/ml), DMSO (>89 mg/ml), ethanol (>24 mg/ml), DMF (~3 mg/ml), and PBS (pH 7.2) (~10 mg/ml).
Molecular Weight443.300 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count6
Rotatable Bond Count5
Exact Mass442.064 Da
Monoisotopic Mass442.064 Da
Topological Polar Surface Area78.000 Ų
Heavy Atom Count28
Formal Charge0
Complexity571.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count2
Documents & Articles
Citations of This Product
References
1. Fabiao Hu, Changping Deng, Yiwen Zhou, Yuping Liu, Tong Zhang, Peiwen Zhang, Zhangting Zhao, Hui Miao, Wenyun Zheng, Wenliang Zhang, Meiyan Wang, Xingyuan Ma.  (2021)  Multistage targeting and dual inhibiting strategies based on bioengineered tumor matrix microenvironment-mediated protein nanocages for enhancing cancer biotherapy.  Bioengineering & Translational Medicine,  (2): (e10290).  [PMID:35600646] [10.1002/btm2.10290]
2. Jang Hye-Jeong, Chung In-Young, Lim Changjin, Chung Sungkyun, Kim Bi-o, Kim Eun Sook, Kim Seok-Ho, Cho You-Hee.  (2019)  Redirecting an Anticancer to an Antibacterial Hit Against Methicillin-Resistant Staphylococcus aureus.  Frontiers in Microbiology,      [PMID:30858845] [10.3389/fmicb.2019.00350]
Solution Calculators
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