Methyl acetoacetate(MAA) - ≥99% , CAS No.105-45-3

CAS: 105-45-3 Cat. No.: M108598 Molecular Weight: 116.12 Beilstein Registry Number: 506727 EC Number: 203-299-8
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
CAS-105-45-3 | s3091 | Tox21_200162 | 3-Oxobutyric Acid Methyl Ester | 3-oxo-butyric acid methyl ester | AKOS000118978 | BDBM50502126 | METHYL ACETOACETATE [MI] | InChI=1/C5H8O3/c1-4(6)3-5(7)8-2/h3H2,1-2H | Acetoacetate methyl ester | DTXCID706716 | HSDB
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
100g
M108598-100g
2
$9.90
500g
M108598-500g
9
$22.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C Ships Wet ice 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.

📚

Literature proof

Cited in 7 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Methyl acetoacetate (MAA) can be used as a reactant for:
Transesterification with alcohols by using various catalysts.
The synthesis of 4-methylcoumarins with phenol in presence of zinc and I2 as catalysts.
Asymmetric heterogeneous hydrogenation reactions by transition metal catalysts.

Specifications

Synonyms
CAS-105-45-3 | s3091 | Tox21_200162 | 3-Oxobutyric Acid Methyl Ester | 3-oxo-butyric acid methyl ester | AKOS000118978 | BDBM50502126 | METHYL ACETOACETATE [MI] | InChI=1/C5H8O3/c1-4(6)3-5(7)8-2/h3H2, 1-2H | Acetoacetate methyl ester | DTXCID706716 | HSDB
Specifications & Purity
≥99%
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥99%
Names and Identifiers
Canonical SmilesCC(=O)CC(=O)OC
IUPAC Namemethyl 3-oxobutanoate
InChIKeyWRQNANDWMGAFTP-UHFFFAOYSA-N
INCHI1S/C5H8O3/c1-4(6)3-5(7)8-2/h3H2,1-2H3
Isomeric SMILES CC(=O)CC(=O)OC
WGK Germany 1
RTECS AK5775000
UN Number 1993
Packing Group I
Molecular Weight 116.12
Beilstein 506727
Reaxy-Rn 506727
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=506727&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
ClassKeto acids and derivatives
SubclassBeta-keto acids and derivatives
Intermediate Tree Nodes Not available
Direct ParentBeta-keto acids and derivatives
Alternative Parents Fatty acid methyl esters  1,3-dicarbonyl compounds  Methyl esters  Ketones  Monocarboxylic acids and derivatives  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic acyclic compounds
Substituents Beta-keto acid - Fatty acid ester - Fatty acid methyl ester - 1,3-dicarbonyl compound - Fatty acyl - Methyl ester - Carboxylic acid ester - Ketone - Monocarboxylic acid or derivatives - Carboxylic acid derivative - Organic oxygen compound - Organic oxide - Carbonyl group - Organooxygen compound - Hydrocarbon derivative - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as beta-keto acids and derivatives. These are organic compounds containing an aldehyde substituted with a keto group on the C3 carbon atom.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





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.

8 results found

Lot NumberCertificate TypeDateItem
L2523195Certificate of AnalysisDec 09, 2025 M108598
L2523211Certificate of AnalysisDec 09, 2025 M108598
L2523682Certificate of AnalysisDec 09, 2025 M108598
A2211490Certificate of AnalysisSep 26, 2025 M108598
A2211539Certificate of AnalysisSep 26, 2025 M108598
D2508058Certificate of AnalysisApr 18, 2025 M108598
G2108224Certificate of AnalysisApr 02, 2025 M108598
G2108225Certificate of AnalysisApr 02, 2025 M108598
Chemical and Physical Properties
SolubilityEasily soluble in water.
SensitivityMoisture & light sensitive.
Refractive Index1.418
Flash Point(°F)158 °F
Flash Point(°C)67℃
Boil Point(°C)169-170°C
Melt Point(°C)-80°C
Molecular Weight116.110 g/mol
XLogP30.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass116.047 Da
Monoisotopic Mass116.047 Da
Topological Polar Surface Area43.400 Ų
Heavy Atom Count8
Formal Charge0
Complexity106.000
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
Documents & Articles
Citations of This Product
References
1. Xianqiang Huang, Sen Liu, Gang Liu, Yiwei Tao, Chenran Wang, Yalin Zhang, Zhen Li, Huaiwei Wang, Zhen Zhou, Guodong Shen, Zechun Xue, Di Sun.  (2022)  An unprecedented 2-fold interpenetrated lvt open framework built from Zn6 ring seamed trivacant polyoxotungstates used for photocatalytic synthesis of pyridine derivatives.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2022.122134]
2. Peilan Luo, Menglin Ye, Wenli Zhou, Pingping Wan, Zhongyun Ma, Zhongxian Qiu, Jilin Zhang, Ru-Shi Liu, Shixun Lian.  (2022)  Simultaneous construction of impermeable dual-shell stabilizing fluoride phosphors for white light-emitting diodes.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2022.134951]
3. Ming Zhang, Lingyan Liu, Weixing Chang, Jing Li.  (2015)  Controllable and Reversible Dimple-Shaped Aggregates Induced by Macrocyclic Recognition Effect.  LANGMUIR,      [PMID:26609556] [10.1021/acs.langmuir.5b03865]
4. Chao Ding, Weili Wei, Hanjun Sun, Jinhua Ding, Jinsong Ren, Xiaogang Qu.  (2014)  Reduced graphene oxide supported chiral Ni particles as magnetically reusable and enantioselective catalyst for asymmetric hydrogenation.  CARBON,      [PMID:] [10.1016/j.carbon.2014.08.022]
5. He Liu, Shixi Wang, Meng Xu, Kaiyue Zhang, Qian Gao, Hualei Wang, Dongzhi Wei.  (2024)  Engineering an (R)-selective transaminase for asymmetric synthesis of (R)-3-aminobutanol.  BIOORGANIC CHEMISTRY,      [PMID:38492494] [10.1016/j.bioorg.2024.107264]
6. Canglong Li, Hongli Qi, Jie Huang, Dongping Chen, Yuanzi Cheng, Minghan Xu, Zihao Jiang, Huaming Yu, Yang Huang, Guanghui Li, Yuejiao Chen.  (2025)  Enabling highly reversible Zn anode via an interfacial preferentially adsorbed additive containing nucleophilic groups.  Microstructures,  (2): (N).  [PMID:] [10.20517/microstructures.2024.114]
7. He Gao, Haiyan Ma, Ling Yan, Shiqi Li, Longbin Xu.  (2026)  Sequential and selective fluorescent detection of sulfur pollutants in environmental water using a dual-channel probe.  JOURNAL OF MOLECULAR STRUCTURE,      [PMID:] [10.1016/j.molstruc.2026.145563]
Solution Calculators
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