(R)-3-Hydroxyisobutyric Acid Methyl Ester - ≥98%(GC) , CAS No.72657-23-9

CAS: 72657-23-9 Cat. No.: R136025 Molecular Weight: 118.13 EC Number: 962-771-8
AVAILABLE TO ORDER
GRADE & PURITY ≥98%(GC)
Synonyms
2H-1,4-Benzodiazepin-2-one, 7-bromo-1,3-dihydro-5-(2-pyridinyl)- | UNII-569FQ3X7KG | DTXSID40206089 | ROCHE ESTER | (2R)-3-Hydroxy-2-methylpropionic Acid Methyl Ester | BUTYROPHENONE, 4-(4-(p-BROMOPHENYL)-4-HYDROXYPIPERIDINO)-4'-FLUORO- | Methyl (R)-beta-
Storage
Store at -20°C
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
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1g
R136025-1g
1

$9.90

$14.90
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5g
R136025-5g
3

$45.90

$68.90
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10g
R136025-10g
1

$82.90

$124.90
Save $42.00 (33.63%)
25g
R136025-25g
3

$187.90

$281.90
Save $94.00 (33.35%)
100g
R136025-100g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.

$498.90

$748.90
Save $250.00 (33.38%)
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Why this grade

≥98%(GC) 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.

Specifications

Synonyms
2H-1, 4-Benzodiazepin-2-one, 7-bromo-1, 3-dihydro-5-(2-pyridinyl)- | UNII-569FQ3X7KG | DTXSID40206089 | ROCHE ESTER | (2R)-3-Hydroxy-2-methylpropionic Acid Methyl Ester | BUTYROPHENONE, 4-(4-(p-BROMOPHENYL)-4-HYDROXYPIPERIDINO)-4'-FLUORO- | Methyl (R)-beta-
Specifications & Purity
≥98%(GC)
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
≥98%(GC)
Names and Identifiers
Pubchem Sid504763615
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504763615
Canonical SmilesCC(CO)C(=O)OC
IUPAC Namemethyl (2R)-3-hydroxy-2-methylpropanoate
InChIKeyATCCIZURPPEVIZ-SCSAIBSYSA-N
INCHI1S/C5H10O3/c1-4(3-6)5(7)8-2/h4,6H,3H2,1-2H3/t4-/m1/s1
Isomeric SMILES C[C@H](CO)C(=O)OC
WGK Germany 3
Molecular Weight 118.13
Reaxy-Rn 1720829
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1720829&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
ClassHydroxy acids and derivatives
SubclassBeta hydroxy acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentBeta hydroxy acids and derivatives
Alternative Parents Methyl esters  Monocarboxylic acids and derivatives  Primary alcohols  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Beta-hydroxy acid - Methyl ester - Carboxylic acid ester - Monocarboxylic acid or derivatives - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Primary alcohol - Organooxygen compound - Carbonyl group - Alcohol - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as beta hydroxy acids and derivatives. These are compounds containing a carboxylic acid substituted with a hydroxyl group on the C3 carbon atom.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





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.

7 results found

Lot NumberCertificate TypeDateItem
H2209596Certificate of AnalysisMar 11, 2026 R136025
H2209598Certificate of AnalysisMar 11, 2026 R136025
K2113636Certificate of AnalysisMay 15, 2025 R136025
K2113638Certificate of AnalysisMay 15, 2025 R136025
K2113639Certificate of AnalysisMay 15, 2025 R136025
L2426003Certificate of AnalysisMay 07, 2024 R136025
E1920147Certificate of AnalysisJan 25, 2023 R136025
Chemical and Physical Properties
Refractive Index1.425
Specific Rotation[α][α]19/D −26°, c = 4 in methanol
Flash Point(°F)176 °F
Flash Point(°C)81°C
Boil Point(°C)76-77 °C/12 mmHg
Molecular Weight118.130 g/mol
XLogP3-0.100
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass118.063 Da
Monoisotopic Mass118.063 Da
Topological Polar Surface Area46.500 Ų
Heavy Atom Count8
Formal Charge0
Complexity79.700
Isotope Atom Count0
Defined Atom Stereocenter Count1
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
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