2-Acetoxyisobutyryl Chloride - ≥97%(T) , CAS No.40635-66-3

CAS: 40635-66-3 Cat. No.: A151622 Molecular Weight: 164.59 Beilstein Registry Number: 507772 EC Number: 255-016-2
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GRADE & PURITY ≥97%(T)
Synonyms
FT-0622107 | Lactoyl chloride, 2-methyl-, acetate | BS-17223 | DTXSID80193641 | NCGC00094942-02 | Propanoyl chloride, 2-(acetyloxy)-2-methyl- | 2-Acetoxyisobutyroyl chloride | SCHEMBL18253 | Acetic acid 2-chloro-1,1-dimethyl-2-oxoethyl ester | 1-Chlorocar
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
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5g
A151622-5g
2

$14.90

$22.90
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25g
A151622-25g
3

$50.90

$76.90
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50g
A151622-50g
1

$91.90

$137.90
Save $46.00 (33.36%)
100g
A151622-100g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.

$165.90

$248.90
Save $83.00 (33.35%)
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Why this grade

≥97%(T) for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Normal 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
FT-0622107 | Lactoyl chloride, 2-methyl-, acetate | BS-17223 | DTXSID80193641 | NCGC00094942-02 | Propanoyl chloride, 2-(acetyloxy)-2-methyl- | 2-Acetoxyisobutyroyl chloride | SCHEMBL18253 | Acetic acid 2-chloro-1, 1-dimethyl-2-oxoethyl ester | 1-Chlorocar
Specifications & Purity
≥97%(T)
Storage
Room temperature
Shipped In
Normal
Purity
≥97%(T)
Names and Identifiers
Pubchem Sid504756933
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504756933
Canonical SmilesCC(=O)OC(C)(C)C(=O)Cl
IUPAC Name(1-chloro-2-methyl-1-oxopropan-2-yl) acetate
InChIKeyRBTCRFLJLUNCLL-UHFFFAOYSA-N
INCHI1S/C6H9ClO3/c1-4(8)10-6(2,3)5(7)9/h1-3H3
Isomeric SMILES CC(=O)OC(C)(C)C(=O)Cl
WGK Germany 3
Molecular Weight 164.59
Beilstein 507772
Reaxy-Rn 507772
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=507772&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.

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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
SuperclassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
SubclassCarboxylic acid derivatives
Intermediate Tree Nodes Not available
Direct ParentCarboxylic acid esters
Alternative Parents Monocarboxylic acids and derivatives  Acyl chlorides  Organochlorides  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Carboxylic acid ester - Monocarboxylic acid or derivatives - Acyl halide - Acyl chloride - Organic oxygen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organochloride - Organohalogen compound - Carbonyl group - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as carboxylic acid esters. These are carboxylic acid derivatives in which the carbon atom from the carbonyl group is attached to an alkyl or an aryl moiety through an oxygen atom (forming an ester group).
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.

4 results found

Lot NumberCertificate TypeDateItem
B2209143Certificate of AnalysisNov 07, 2025 A151622
B2209224Certificate of AnalysisNov 07, 2025 A151622
B2209508Certificate of AnalysisNov 07, 2025 A151622
K2110808Certificate of AnalysisAug 12, 2025 A151622
Chemical and Physical Properties
SensitivityMoisture Sensitive
Refractive Index1.43
Flash Point(°F)68°C(lit.)
Flash Point(°C)68°C(lit.)
Boil Point(°C)70°C/17mmHg(lit.)
Molecular Weight164.590 g/mol
XLogP31.300
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count3
Exact Mass164.024 Da
Monoisotopic Mass164.024 Da
Topological Polar Surface Area43.400 Ų
Heavy Atom Count10
Formal Charge0
Complexity162.000
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
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