BQ-123 - Moligand™, ≥98% , Antagonist of ET A receptor, CAS No.136553-81-6, Antagonist of ET A receptor

CAS: 136553-81-6 Cat. No.: B275090 Molecular Weight: 610.7
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. ≥98%
Synonyms
2-((3R,6S,9R,12R,17aS)-9-((1H-indol-3-yl)methyl)-6-isobutyl-3-isopropyl-1,4,7,10,13-pentaoxohexadecahydro-1H-pyrrolo[1,2-a][1,4,7,10,13]pentaazacyclopentadecin-12-yl)acetic acid | cyclo(L-Leu-D-Trp-D-Asp-L-Pro-D-Val) | BDBM50197954 | LS-13503 | B-186 | BQ
Storage
Store at -20°C,Desiccated
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1mg
B275090-1mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$55.90
5mg
B275090-5mg
3
$199.90
10mg
B275090-10mg
2
$332.90
25mg
B275090-25mg
2
$558.90
50mg
B275090-50mg
2
$1,096.90
100mg
B275090-100mg
2
$1,566.90
Enter a quantity for the sizes you want to add.
🧪

Why this grade

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

🌡

Storage & shipping

Store at -20°C,Desiccated 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
2-((3R, 6S, 9R, 12R, 17aS)-9-((1H-indol-3-yl)methyl)-6-isobutyl-3-isopropyl-1, 4, 7, 10, 13-pentaoxohexadecahydro-1H-pyrrolo[1, 2-a][1, 4, 7, 10, 13]pentaazacyclopentadecin-12-yl)acetic acid | cyclo(L-Leu-D-Trp-D-Asp-L-Pro-D-Val) | BDBM50197954 | LS-13503 | B-186 | BQ
Specifications & Purity
Moligand™, ≥98%
Biochemical and Physiological Mechanisms
Potent, selective ET A receptor antagonist (IC 50 values are 7.3 and 18, 000 nM for ET A and ET B endothelin receptors respectively). Some ability to cross the blood-brain barrier. Anti-ischemic activity in vivo .
Storage
Store at -20°C, Desiccated
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Grade
Moligand™
Action Type
ANTAGONIST
Mechanism of action
Antagonist of ET A receptor
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 week. 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
Pubchem Sid504758796
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504758796
Canonical SmilesCC(C)CC1C(=O)NC(C(=O)NC(C(=O)N2CCCC2C(=O)NC(C(=O)N1)C(C)C)CC(=O)O)CC3=CNC4=CC=CC=C43
IUPAC Name2-[(3R,6R,9S,12R,15S)-6-(1H-indol-3-ylmethyl)-9-(2-methylpropyl)-2,5,8,11,14-pentaoxo-12-propan-2-yl-1,4,7,10,13-pentazabicyclo[13.3.0]octadecan-3-yl]acetic acid
InChIKeyVYCMAAOURFJIHD-PJNXIOHISA-N
INCHI1S/C31H42N6O7/c1-16(2)12-21-27(40)33-22(13-18-15-32-20-9-6-5-8-19(18)20)28(41)35-23(14-25(38)39)31(44)37-11-7-10-24(37)29(42)36-26(17(3)4)30(43)34-21/h5-6,8-9,15-17,21-24,26,32H,7,10-14H2,1-4H3,(H,33,40)(H,34,43)(H,35,41)(H,36,42)(H,38,39)/t21-,22+,23+,24-,26+/m0/s1
Isomeric SMILES CC(C)C[C@H]1C(=O)N[C@@H](C(=O)N[C@@H](C(=O)N2CCC[C@H]2C(=O)N[C@@H](C(=O)N1)C(C)C)CC(=O)O)CC3=CNC4=CC=CC=C43
Molecular Weight 610.7
Reaxy-Rn 24732267
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=24732267&ln=

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 acids and derivatives
ClassCarboxylic acids and derivatives
SubclassAmino acids, peptides, and analogues
Intermediate Tree Nodes Peptides
Direct ParentOligopeptides
Alternative Parents Cyclic peptides  Macrolactams  3-alkylindoles  Alpha amino acids and derivatives  Substituted pyrroles  Benzenoids  Tertiary carboxylic acid amides  Pyrrolidines  Heteroaromatic compounds  Secondary carboxylic acid amides  Lactams  Azacyclic compounds  Monocarboxylic acids and derivatives  Carboxylic acids  Carbonyl compounds  Hydrocarbon derivatives  Organic oxides  Organonitrogen compounds  Organopnictogen compounds  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Alpha-oligopeptide - Cyclic alpha peptide - Macrolactam - Alpha-amino acid or derivatives - 3-alkylindole - Indole - Indole or derivatives - Substituted pyrrole - Benzenoid - Pyrrole - Pyrrolidine - Heteroaromatic compound - Tertiary carboxylic acid amide - Secondary carboxylic acid amide - Lactam - Carboxamide group - Monocarboxylic acid or derivatives - Carboxylic acid - Azacycle - Organoheterocyclic compound - Organic nitrogen compound - Organooxygen compound - Organonitrogen compound - Hydrocarbon derivative - Organic oxide - Organopnictogen compound - Organic oxygen compound - Carbonyl group - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as oligopeptides. These are organic compounds containing a sequence of between three and ten alpha-amino acids joined by peptide bonds.
External Descriptors cyclic peptide
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
EDNRA Tclin Endothelin-1 receptor (0 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
ABL1 Tclin Tyrosine-protein kinase ABL (18331 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
PGR Tclin Progesterone receptor (8562 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ADRB2 Tclin Beta-2 adrenergic receptor (11824 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ADRA2A Tclin Alpha-2a adrenergic receptor (9450 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
AGTR1 Tclin Type-1 angiotensin II receptor (5176 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
EDNRB Tclin Endothelin receptor ET-B (1928 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
EDNRA Tclin Endothelin receptor ET-A (5008 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
GSK3B Tclin Glycogen synthase kinase-3 beta (11785 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CSNK1D Tchem Casein kinase I delta (4546 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
S1PR1 Tclin Sphingosine 1-phosphate receptor Edg-1 (5806 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CDK2 Tchem Cyclin-dependent kinase 2 (9050 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
GLP1R Tclin Glucagon-like peptide 1 receptor (111429 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
C5AR1 Tclin C5a anaphylatoxin chemotactic receptor (2677 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
AURKA Tchem Serine/threonine-protein kinase Aurora-A (10240 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
U2OS (164939 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
CX3CR1 Tchem C-X3-C chemokine receptor 1 (1686 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
FPR2 Tchem Lipoxin A4 receptor (3472 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
FFAR4 Tchem G-protein coupled receptor 120 (2999 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ABCC2 Tchem Canalicular multispecific organic anion transporter 1 (1191 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
BRD4 Tchem Bromodomain-containing protein 4 (13122 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
GPR35 Tchem G-protein coupled receptor 35 (2643 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SLCO1B1 Tchem Solute carrier organic anion transporter family member 1B1 (2672 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SLCO1B3 Tchem Solute carrier organic anion transporter family member 1B3 (2517 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
SLCO1A2 Tchem Solute carrier organic anion transporter family member 1A2 (104 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
ABCC6 Tbio Multidrug resistance-associated protein 6 (18 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
TRIM24 Tchem Transcription intermediary factor 1-alpha (2087 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
BRPF1 Tchem Peregrin (2217 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
HEK-293T (167025 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Aplnr Apelin receptor (201 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Mapk1 MAP kinase ERK2 (650 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Hdac6 Histone deacetylase 6 (222 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Fgfr3 Fibroblast growth factor receptor 3 (21 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Rattus norvegicus (775804 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Slc10a1 Bile acid transporter (65 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Gpr119 Glucose-dependent insulinotropic receptor (270 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Slco1a1 Solute carrier organic anion transporter family member 1A1 (265 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Slco1a4 Solute carrier organic anion transporter family member 1A4 (114 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Slco1b2 Solute carrier organic anion transporter family member 1B2 (36 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Slco1c1 Solute carrier organic anion transporter family member 1C1 (11 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Slco1a5 Solute carrier organic anion transporter family member 1A5 (48 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Ednra Endothelin receptor (172 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.

6 results found

Lot NumberCertificate TypeDateItem
K2218158Certificate of AnalysisSep 04, 2025 B275090
K2218163Certificate of AnalysisSep 04, 2025 B275090
K2218171Certificate of AnalysisSep 04, 2025 B275090
K2218172Certificate of AnalysisSep 04, 2025 B275090
K2218174Certificate of AnalysisSep 04, 2025 B275090
K2218188Certificate of AnalysisSep 04, 2025 B275090
Chemical and Physical Properties
SolubilitySoluble in water to 1.25 mg/ml
Molecular Weight610.700 g/mol
XLogP32.200
Hydrogen Bond Donor Count6
Hydrogen Bond Acceptor Count7
Rotatable Bond Count7
Exact Mass610.311 Da
Monoisotopic Mass610.311 Da
Topological Polar Surface Area190.000 Ų
Heavy Atom Count44
Formal Charge0
Complexity1110.000
Isotope Atom Count0
Defined Atom Stereocenter Count5
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Solution Calculators
Reviews

Customer Reviews

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