Butyrolactone 3 - ≥95% , CAS No.778649-18-6

CAS: 778649-18-6 Cat. No.: B344763 Molecular Weight: 184.19 EC Number: 663-946-9
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Synonyms
(2S,3R)-4-Methylidene-5-oxo-2-propyloxolane-3- | CHEBI:125615 | DTXSID60435253 | BRD-K68584490-001-01-2 | Butyrolactone 3 | (2S,3R)-4-methylene-5-oxo-2-propyl-3-oxolanecarboxylic acid | AKOS006290263 | BDBM50371233 | Q27216229 | SCHEMBL23682959 | (2S,3R)-
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
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Size
Status
Price
Qty
1mg
B344763-1mg
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$71.90
5mg
B344763-5mg
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10mg
B344763-10mg
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25mg
B344763-25mg
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50mg
B344763-50mg
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100mg
B344763-100mg
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$1,999.90
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Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at -20°C Ships Ice chest + Ice pads 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Butyrolactone 3, also called MB-3 is an inhibitor of Histone acetyltransferase GCN5 (general control of amino-acid synthesis 5). Gcn5 HAT activity is required to acetylate histone H3 lysine 9 (K9) and K14, which allows transcription elongation by relaxing nucleosomes. Butyrolactone 3 specifically inhibits Gcn5's HAT activity. It has been shown to display anti-inflammatory and anti-carcinogenic effects.

Specifications

Synonyms
(2S, 3R)-4-Methylidene-5-oxo-2-propyloxolane-3- | CHEBI:125615 | DTXSID60435253 | BRD-K68584490-001-01-2 | Butyrolactone 3 | (2S, 3R)-4-methylene-5-oxo-2-propyl-3-oxolanecarboxylic acid | AKOS006290263 | BDBM50371233 | Q27216229 | SCHEMBL23682959 | (2S, 3R)-
Specifications & Purity
≥95%
Biochemical and Physiological Mechanisms
MB-3 can modify gene expression in mouse embryonic stem cells and yeast. It inhibits the acetyltransferase activity of Universal Control Protein 5 (GCN5) by binding to the acetyl CoA pocket in GCN5. MB-3 is a Gcn5 HAT (histone acetyltransferase) inhibitor
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.
Purity
≥95%
Names and Identifiers
Canonical SmilesCCCC1C(C(=C)C(=O)O1)C(=O)O
IUPAC Name(2S,3R)-4-methylidene-5-oxo-2-propyloxolane-3-carboxylic acid
InChIKeySRQUTZJZABSZRQ-NKWVEPMBSA-N
INCHI1S/C9H12O4/c1-3-4-6-7(8(10)11)5(2)9(12)13-6/h6-7H,2-4H2,1H3,(H,10,11)/t6-,7+/m0/s1
Isomeric SMILES CCC[C@H]1[C@@H](C(=C)C(=O)O1)C(=O)O
Molecular Weight 184.19
Reaxy-Rn 35447591
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=35447591&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

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✅ Certificate of Analysis (COA)

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

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassLactones
SubclassGamma butyrolactones
Intermediate Tree Nodes Not available
Direct ParentGamma butyrolactones
Alternative Parents Dicarboxylic acids and derivatives  Tetrahydrofurans  Enoate esters  Oxacyclic compounds  Carboxylic acids  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Gamma butyrolactone - Dicarboxylic acid or derivatives - Alpha,beta-unsaturated carboxylic ester - Enoate ester - Tetrahydrofuran - Carboxylic acid ester - Oxacycle - Carboxylic acid - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Carbonyl group - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as gamma butyrolactones. These are compounds containing a gamma butyrolactone moiety, which consists of an aliphatic five-member ring with four carbon atoms, one oxygen atom, and bears a ketone group on the carbon adjacent to the oxygen atom.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(non-human)
GCN5 Histone acetyltransferase GCN5 (89 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
H2505312Certificate of AnalysisJun 18, 2025 B344763
H2505313Certificate of AnalysisJun 18, 2025 B344763
H2505314Certificate of AnalysisJun 18, 2025 B344763
H2505315Certificate of AnalysisJun 18, 2025 B344763
H2505316Certificate of AnalysisJun 18, 2025 B344763
H2505317Certificate of AnalysisJun 18, 2025 B344763
Chemical and Physical Properties
SolubilitySoluble in DMSO, and methanol.
Refractive Indexn20D1.50 (Predicted)
Boil Point(°C)386.21° C at 760 mmHg (Predicted)
Melt Point(°C)60° C
Molecular Weight184.190 g/mol
XLogP31.300
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count4
Rotatable Bond Count3
Exact Mass184.074 Da
Monoisotopic Mass184.074 Da
Topological Polar Surface Area63.600 Ų
Heavy Atom Count13
Formal Charge0
Complexity256.000
Isotope Atom Count0
Defined Atom Stereocenter Count2
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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