Monastrol - ≥98% , CAS No.329689-23-8

CAS: 329689-23-8 Cat. No.: M274759 Molecular Weight: 292.35
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
1,2,3,4-Tetrahydro-4-(3-hydroxyphenyl)-6-methyl-2-thioxo-5-pyrimidinecarboxylicacidethylester | (±)-Monastrol | 6-Methyl-4-(3-hydroxyphenyl)-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate
Storage
Protected from light,Store at -20°C,Desiccated
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
10mg
M274759-10mg
2

$23.90

$35.90
Save $12.00 (33.43%)
50mg
M274759-50mg
2

$57.90

$86.90
Save $29.00 (33.37%)
250mg
M274759-250mg
2

$166.90

$250.90
Save $84.00 (33.48%)
1g
M274759-1g
2

$447.90

$671.90
Save $224.00 (33.34%)
Enter a quantity for the sizes you want to add.
🧪

Why this grade

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

🌡

Storage & shipping

Protected from light,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.

Overview

Store at -20°C. It is important to note that this product is reported to be light sensitive. Store In the Dark. Store under desiccating conditions.

Specifications

Synonyms
1, 2, 3, 4-Tetrahydro-4-(3-hydroxyphenyl)-6-methyl-2-thioxo-5-pyrimidinecarboxylicacidethylester | (±)-Monastrol | 6-Methyl-4-(3-hydroxyphenyl)-2-thioxo-1, 2, 3, 4-tetrahydropyrimidine-5-carboxylate
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
Potent and cell permeable mitosis inhibitor. Arrests cellular mitosis through kinesin Eg5 inhibition (IC 50 = 14 μM). Also slows ADP release, changes Eg5 conformation and alters Eg5 interactions with microtubules.
Storage
Protected from light, 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.
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
Pubchem Sid488194127
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488194127
Canonical SmilesCCOC(=O)C1=C(NC(=S)NC1C2=CC(=CC=C2)O)C
IUPAC Nameethyl 4-(3-hydroxyphenyl)-6-methyl-2-sulfanylidene-3,4-dihydro-1H-pyrimidine-5-carboxylate
InChIKeyLOBCDGHHHHGHFA-UHFFFAOYSA-N
INCHI1S/C14H16N2O3S/c1-3-19-13(18)11-8(2)15-14(20)16-12(11)9-5-4-6-10(17)7-9/h4-7,12,17H,3H2,1-2H3,(H2,15,16,20)
Isomeric SMILES CCOC(=O)C1=C(NC(=S)NC1C2=CC(=CC=C2)O)C
Molecular Weight 292.35
Reaxy-Rn 8495831
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=8495831&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
SuperclassOrganoheterocyclic compounds
ClassDiazines
SubclassPyrimidines and pyrimidine derivatives
Intermediate Tree Nodes Hydropyrimidines
Direct ParentHydropyrimidine carboxylic acids and derivatives
Alternative Parents Pyrimidinethiones  2-Thiopyrimidines  1-hydroxy-4-unsubstituted benzenoids  1-hydroxy-2-unsubstituted benzenoids  Benzene and substituted derivatives  Vinylogous amides  Enoate esters  Thioureas  Monocarboxylic acids and derivatives  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Hydropyrimidine carboxylic acid derivative - 2-thiopyrimidine - 1-hydroxy-4-unsubstituted benzenoid - 1-hydroxy-2-unsubstituted benzenoid - Thiopyrimidine - Phenol - Pyrimidinethione - Monocyclic benzene moiety - Benzenoid - Vinylogous amide - Alpha,beta-unsaturated carboxylic ester - Enoate ester - Carboxylic acid ester - Thiourea - Carboxylic acid derivative - Monocarboxylic acid or derivatives - Azacycle - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Organic nitrogen compound - Organopnictogen compound - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Carbonyl group - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as hydropyrimidine carboxylic acids and derivatives. These are compounds containing a hydrogenated pyrimidine ring which bears a carboxylic acid group.
External Descriptors ethyl ester - phenols - thioureas - enoate ester
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
CYP3A4 Tclin Cytochrome P450 3A4 (1 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:

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

10 results found

Lot NumberCertificate TypeDateItem
B2320411Certificate of AnalysisJun 11, 2026 M274759
B2320412Certificate of AnalysisJun 11, 2026 M274759
B2320380Certificate of AnalysisMay 20, 2026 M274759
C2308889Certificate of AnalysisMar 18, 2026 M274759
C2308890Certificate of AnalysisMar 18, 2026 M274759
C2308897Certificate of AnalysisMar 18, 2026 M274759
B2320418Certificate of AnalysisMar 18, 2026 M274759
B2320420Certificate of AnalysisMar 18, 2026 M274759
B2320427Certificate of AnalysisMar 18, 2026 M274759
B2320419Certificate of AnalysisDec 18, 2023 M274759
Chemical and Physical Properties
SolubilitySoluble in DMSO to 100 mM and in ethanol to 100 mM
Sensitivitylight sensitive
Molecular Weight292.360 g/mol
XLogP31.600
Hydrogen Bond Donor Count3
Hydrogen Bond Acceptor Count4
Rotatable Bond Count4
Exact Mass292.088 Da
Monoisotopic Mass292.088 Da
Topological Polar Surface Area103.000 Ų
Heavy Atom Count20
Formal Charge0
Complexity436.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count1
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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