SJB2-043 - Moligand™, ≥98% , Inhibitor of ubiquitin specific peptidase 1, CAS No.63388-44-3, Inhibitor of ubiquitin specific peptidase 1

CAS: 63388-44-3 Cat. No.: S126106 Molecular Weight: 275.26 PubChem CID: 509070
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
AC-36369 | AKOS027254768 | 2-phenyl-naphtho[2,3-d]oxazole-4,9-dione | 2-PHENYLNAPHTHO[2,3-D]OXAZOLE-4,9-DIONE | MFCD26960957 | 2-phenyl-naphthoxazole-4,9-quinone | A917582 | GTPL12225 | SJB2043 | sjb2-043 | 2-phenylbenzo[f][1,3]benzoxazole-4,9-dione | SCH
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1mg
S126106-1mg
3

$9.90

$14.90
Save $5.00 (33.56%)
5mg
S126106-5mg
3

$21.90

$32.90
Save $11.00 (33.43%)
10mg
S126106-10mg
3

$38.90

$58.90
Save $20.00 (33.96%)
25mg
S126106-25mg
2

$84.90

$127.90
Save $43.00 (33.62%)
50mg
S126106-50mg
2

$151.90

$227.90
Save $76.00 (33.35%)
100mg
S126106-100mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.

$249.90

$374.90
Save $125.00 (33.34%)
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 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
AC-36369 | AKOS027254768 | 2-phenyl-naphtho[2, 3-d]oxazole-4, 9-dione | 2-PHENYLNAPHTHO[2, 3-D]OXAZOLE-4, 9-DIONE | MFCD26960957 | 2-phenyl-naphthoxazole-4, 9-quinone | A917582 | GTPL12225 | SJB2043 | sjb2-043 | 2-phenylbenzo[f][1, 3]benzoxazole-4, 9-dione | SCH
Specifications & Purity
Moligand™, ≥98%
Biochemical and Physiological Mechanisms
IC50 Value: 0.544 uM (USP1) SJB2-043 is one of analogs/derivatives of C527, which is a novel and potent USP1 (ubiquitin-specific protease 1) inhibitor. Cells were treated with SJB2-043 for 24 hrs and cell extracts were incubated with HA-Ub-VS, followed b
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.
Grade
Moligand™
Action Type
INHIBITOR
Mechanism of action
Inhibitor of ubiquitin specific peptidase 1
Purity
≥98%
Names and Identifiers
Pubchem Sid504758959
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504758959
Canonical SmilesC1=CC=C(C=C1)C2=NC3=C(O2)C(=O)C4=CC=CC=C4C3=O
IUPAC Name2-phenylbenzo[f][1,3]benzoxazole-4,9-dione
InChIKeyCMYQQADDUUDCCA-UHFFFAOYSA-N
INCHI1S/C17H9NO3/c19-14-11-8-4-5-9-12(11)15(20)16-13(14)18-17(21-16)10-6-2-1-3-7-10/h1-9H
Isomeric SMILES C1=CC=C(C=C1)C2=NC3=C(O2)C(=O)C4=CC=CC=C4C3=O
PubChem CID 509070
Molecular Weight 275.26

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
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassOxazoles
Intermediate Tree Nodes Not available
Direct ParentPhenyl-1,3-oxazoles
Alternative Parents Naphthalenes  Aryl ketones  Benzene and substituted derivatives  Heteroaromatic compounds  Oxacyclic compounds  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteropolycyclic compounds
Substituents Phenyl-1,3-oxazole - Naphthalene - Aryl ketone - Monocyclic benzene moiety - Benzenoid - Heteroaromatic compound - Ketone - Oxacycle - Azacycle - Organic nitrogen compound - Hydrocarbon derivative - Organic oxide - Organooxygen compound - Organonitrogen compound - Organopnictogen compound - Organic oxygen compound - Aromatic heteropolycyclic compound
DescriptionThis compound belongs to the class of organic compounds known as phenyl-1,3-oxazoles. These are aromatic heterocyclic compounds containing a 1,3-oxazole substituted at one or more positions by a phenyl group.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
USP1 Tchem Ubiquitin carboxyl-terminal hydrolase 1 (1 Activities)
Activity TypeActivity Value -log(M)Mechanism of ActionActivity ReferencePublications (PubMed IDs)
HepG2 (196354 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
USP1 Tchem Ubiquitin carboxyl-terminal hydrolase 1 (22556 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
rep Replicase polyprotein 1ab (378 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.

6 results found

Lot NumberCertificate TypeDateItem
C2210188Certificate of AnalysisSep 09, 2025 S126106
C2210190Certificate of AnalysisSep 09, 2025 S126106
C2210191Certificate of AnalysisSep 09, 2025 S126106
C2210192Certificate of AnalysisSep 09, 2025 S126106
C2210193Certificate of AnalysisSep 09, 2025 S126106
C2210663Certificate of AnalysisSep 09, 2025 S126106
Chemical and Physical Properties
Solubilityinsoluble in H2O; insoluble in EtOH; ≥6.68 mg/mL in DMSO
Molecular Weight275.260 g/mol
XLogP33.600
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count4
Rotatable Bond Count1
Exact Mass275.058 Da
Monoisotopic Mass275.058 Da
Topological Polar Surface Area60.200 Ų
Heavy Atom Count21
Formal Charge0
Complexity443.000
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 Count1
Solution Calculators
Reviews

Customer Reviews

Need help choosing the grade?

Our grade selection guide covers purity, stabilizer status, and application suitability for all variants in our catalog.

View Moligand™ grade guide →

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.