H-Asp-OtBu - ≥98% , CAS No.4125-93-3

CAS: 4125-93-3 Cat. No.: H768846 Molecular Weight: 189.21 EC Number: 965-044-3
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
L-Aspartic acid a-tert-butyl ester
Storage
Store at 2-8°C
Shipped In
Wet ice
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
H768846-250mg
3

$9.90

$14.90
Save $5.00 (33.56%)
1g
H768846-1g
3

$30.90

$46.90
Save $16.00 (34.12%)
5g
H768846-5g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.

$153.90

$230.90
Save $77.00 (33.35%)
25g
H768846-25g
1

$587.90

$881.90
Save $294.00 (33.34%)
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🧪

Why this grade

≥98% 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.

📋

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.

Specifications

Synonyms
L-Aspartic acid a-tert-butyl ester
Specifications & Purity
≥98%
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
≥98%
Names and Identifiers
Canonical SmilesCC(C)(C)OC(=O)C(CC(=O)O)N
IUPAC Name(3S)-3-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid
InChIKeyPUWCNJZIFKBDJQ-YFKPBYRVSA-N
INCHI1S/C8H15NO4/c1-8(2,3)13-7(12)5(9)4-6(10)11/h5H,4,9H2,1-3H3,(H,10,11)/t5-/m0/s1
Isomeric SMILES CC(C)(C)OC(=O)[C@H](CC(=O)O)N
Alternate CAS 176164-02-6
Molecular Weight 189.21

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
ClassCarboxylic acids and derivatives
SubclassAmino acids, peptides, and analogues
Intermediate Tree Nodes Amino acids and derivatives - Alpha amino acids and derivatives
Direct ParentAspartic acid and derivatives
Alternative Parents Alpha amino acid esters  Fatty acid esters  Branched fatty acids  Dicarboxylic acids and derivatives  Quaternary ammonium salts  Carboxylic acid salts  Carboxylic acid esters  Carboxylic acids  Organic zwitterions  Organic salts  Organic oxides  Monoalkylamines  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAliphatic acyclic compounds
Substituents Aspartic acid or derivatives - Alpha-amino acid ester - Branched fatty acid - Fatty acid ester - Dicarboxylic acid or derivatives - Fatty acyl - Quaternary ammonium salt - Carboxylic acid ester - Carboxylic acid salt - Carboxylic acid - Organooxygen compound - Organonitrogen compound - Primary aliphatic amine - Hydrocarbon derivative - Organic oxide - Organic nitrogen compound - Carbonyl group - Organic oxygen compound - Amine - Organic salt - Organic zwitterion - Aliphatic acyclic compound
DescriptionThis compound belongs to the class of organic compounds known as aspartic acid and derivatives. These are compounds containing an aspartic acid or a derivative thereof resulting from reaction of aspartic acid at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
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
H2526531Certificate of AnalysisMay 20, 2025 H768846
H2526532Certificate of AnalysisMay 20, 2025 H768846
H2526533Certificate of AnalysisMay 20, 2025 H768846
H2526534Certificate of AnalysisMay 20, 2025 H768846
Chemical and Physical Properties
Molecular Weight189.210 g/mol
XLogP3-2.600
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count5
Rotatable Bond Count5
Exact Mass189.1 Da
Monoisotopic Mass189.1 Da
Topological Polar Surface Area89.600 Ų
Heavy Atom Count13
Formal Charge0
Complexity207.000
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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