apamin, Inhibitor of K Ca2.1;Channel blocker of K Ca2.2;Inhibitor of K Ca2.2;Channel blocker of K Ca2.3;Inhibitor of K Ca2.3, CAS No.24345-16-2, Inhibitor of K Ca2.1;Channel blocker of K Ca2.2;Inhibitor of K Ca2.2;Channel blocker of K Ca2.3;Inhibitor of K Ca2.3

CAS: 24345-16-2 Cat. No.: rp173482 Molecular Weight: 2027.4 EC Number: 246-182-7 PubChem CID: 16133797
AVAILABLE TO ORDER
GRADE & PURITY Moligand™ ? Moligand™ — Aladdin's line of ligands and bioactive small molecules. Use for receptor, pathway, and binding studies needing defined small-molecule tools.
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Size
Status
Price
Qty
500μg
rp173482-500μg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$2,399.90
1mg
rp173482-1mg
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.
$3,999.90
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Why this grade

Moligand™ Moligand™ for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Check lot-specific COA for exact specifications.

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Quality documents

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

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Literature proof

Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Product Name
apamin, Inhibitor of K Ca2.1;Channel blocker of K Ca2.2;Inhibitor of K Ca2.2;Channel blocker of K Ca2.3;Inhibitor of K Ca2.3, CAS No.24345-16-2
Synonyms
L-Histidinamide, L-cysteinyl-L-asparaginyl-L-cysteinyl-L-lysyl-L-alanyl-L-prolyl-L-alpha-glutamyl-L-threonyl-L-alanyl-L-leucyl-L-cysteinyl-L-alanyl-L-arginyl-L-arginyl-L-cysteinyl-L-glutaminyl-L-glutaminyl-, cyclic (1-11)(3-15)-bis(disulfide) | C79H131N31
Grade
Moligand™
Specifications & Purity
Moligand™
Action Type
CHANNEL BLOCKER, INHIBITOR
Mechanism of action
Inhibitor of K Ca2.1;Channel blocker of K Ca2.2;Inhibitor of K Ca2.2;Channel blocker of K Ca2.3;Inhibitor of K Ca2.3
CAS
24345-16-2
Molecule Type
Peptide
Storage and Shipping
Storage
Room temperature

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
SuperclassOrganic Polymers
ClassPolypeptides
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentPolypeptides
Alternative Parents Cyclic peptides  Histidine and derivatives  Glutamine and derivatives  N-acyl-alpha amino acids and derivatives  Alpha amino acid amides  N-acyl amines  Tertiary carboxylic acid amides  Pyrrolidines  Heteroaromatic compounds  Imidazoles  Secondary carboxylic acid amides  Amino acids  Secondary alcohols  Primary carboxylic acid amides  Guanidines  Organic disulfides  Lactams  Carboximidamides  Carboxylic acids  Monocarboxylic acids and derivatives  Azacyclic compounds  Carbonyl compounds  Organic oxides  Hydrocarbon derivatives  Imines  Monoalkylamines  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Polypeptide - Cyclic alpha peptide - Histidine or derivatives - Glutamine or derivatives - N-acyl-alpha amino acid or derivatives - Alpha-amino acid amide - N-substituted-alpha-amino acid - Alpha-amino acid or derivatives - N-acyl-amine - Fatty amide - Fatty acyl - Heteroaromatic compound - Tertiary carboxylic acid amide - Pyrrolidine - Imidazole - Azole - Amino acid or derivatives - Secondary carboxylic acid amide - Secondary alcohol - Primary carboxylic acid amide - Lactam - Guanidine - Organic disulfide - Carboxamide group - Amino acid - Azacycle - Organoheterocyclic compound - Carboxylic acid derivative - Carboxylic acid - Carboximidamide - Monocarboxylic acid or derivatives - Amine - Organic oxide - Organic oxygen compound - Organic nitrogen compound - Carbonyl group - Alcohol - Primary amine - Organooxygen compound - Organonitrogen compound - Imine - Hydrocarbon derivative - Primary aliphatic amine - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as polypeptides. These are peptides containing ten or more amino acid residues.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
KCNN1 Tchem Small conductance calcium-activated potassium channel protein 1 (0 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
KCNN3 Tchem Small conductance calcium-activated potassium channel protein 3 (0 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
KCNN2 Tchem Small conductance calcium-activated potassium channel protein 2 (0 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Genetic information
Alternate NamesL-Histidinamide, L-cysteinyl-L-asparaginyl-L-cysteinyl-L-lysyl-L-alanyl-L-prolyl-L-alpha-glutamyl-L-threonyl-L-alanyl-L-leucyl-L-cysteinyl-L-alanyl-L-arginyl-L-arginyl-L-cysteinyl-L-glutaminyl-L-glutaminyl-, cyclic (1-11)(3-15)-bis(disulfide) | C79H131N31
Reference
  • 1. Kinetics and inhibition of recombinant human cystathionine gamma-lyase. Toward the rational control of transsulfuration., The Journal of biological chemistry, Steegborn, C C and 7 more authors.
  • 2. Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences., Proceedings of the National Academy of Sciences of the United States of America, Strausberg, Robert L RL and 83 more authors.
  • 3. Genomic basis of cystathioninuria (MIM 219500) revealed by multiple mutations in cystathionine gamma-lyase (CTH)., Human genetics, Wang, Jian J and Hegele, Robert A RA.
  • 4. Cloning and nucleotide sequence of human liver cDNA encoding for cystathionine gamma-lyase., Biochemical and biophysical research communications, Lu, Y Y, O'Dowd, B F BF, Orrego, H H and Israel, Y Y.
  • 5. Single nucleotide polymorphism in CTH associated with variation in plasma homocysteine concentration., Clinical genetics, Wang, J J, Huff, A M AM, Spence, J D JD and Hegele, R A RA.
  • 6. Cystathionine gamma-lyase overexpression inhibits cell proliferation via a H2S-dependent modulation of ERK1/2 phosphorylation and p21Cip/WAK-1., The Journal of biological chemistry, Yang, Guangdong G, Cao, Kun K, Wu, Lingyun L and Wang, Rui R.
  • 7. The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)., Genome research, Gerhard, Daniela S DS and 115 more authors.
  • 8. Towards a proteome-scale map of the human protein-protein interaction network., Nature, Rual, Jean-François JF and 37 more authors.
  • 9. The DNA sequence and biological annotation of human chromosome 1., Nature, Gregory, S G SG and 178 more authors.
  • 10. Polymorphisms in one-carbon metabolism and trans-sulfuration pathway genes and susceptibility to bladder cancer., International journal of cancer, Moore, Lee E LE and 14 more authors. more
Citations of This Product
References
1. Haihao Ma, Tong Zhou, Zheming Liu, Piao Zhao, Jia Liu, Hang Zhu, Xiaomao Zhou.  (2025)  Electrophysiological and pharmacological characteristics of the Slowpoke channel in Brown Rice Planthopper, Nilaparvata lugens (Stål).  PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY,      [PMID:41326110] [10.1016/j.pestbp.2025.106752]
Solution Calculators
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