H-Asp(OtBu)-OH

Name: H-Asp(OtBu)-OH
Brand: Vaqora Chemicals
SKU: VQ-051507

About H-Asp(OtBu)-OH

H-Asp(OtBu)-OH (CAS 3057-74-7) is a carboxylic acid offered by Vaqora Chemicals. Its molecular formula is C8H15NO4 and its molecular weight is 189.21 g/mol. Systematically, it is named (2S)-2-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid. Common synonyms include 4-tert-Butyl hydrogen L-aspartate and 4-(1,1-Dimethylethyl) hydrogen L-aspartate.

Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis and API synthesis. Our customers for this product work in pharmaceutical manufacturing and academic and industrial research.

Available in 100 mg, 250 mg, 1 g and 5 g packs, H-Asp(OtBu)-OH is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request.

Typical applications

Organic synthesis
API synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	H-Asp(OtBu)-OH
Catalogue No.	VQ-051507
CAS Number	3057-74-7
IUPAC name	(2S)-2-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid
Molecular formula	C₈H₁₅NO₄
Molecular weight	189.21 g/mol
Exact mass	189.1001
InChIKey	MXWMFBYWXMXRPD-YFKPBYRVSA-N
SMILES	CC(C)(C)OC(=O)C[C@@H](C(=O)O)N
PubChem CID	7010570

Physical properties
Physical form	Other
LogP (XLogP3)	-1.4
H-bond donors / acceptors	2 / 5
TPSA	89.6 Å²
Synonyms	4-tert-Butyl hydrogen L-aspartate, 4-(1,1-Dimethylethyl) hydrogen L-aspartate, L-Aspartic acid 4-tert-butyl ester, (S)-2-Amino-4-(tert-butoxy)-4-oxobutanoic acid, (2S)-2-amino-4-(tert-butoxy)-4-oxobutanoic acid, 4-tert-Butyl L-Aspartate, l-aspartic acid, 4-(1,1-dimethylethyl) ester, L-Aspartic acid 4-t-butyl ester, (S)-2-amino-4-tert-butoxy-4-oxobutanoic acid, Asp(OBut), (2S)-2-Amino-4-tert-butoxy-4-oxo-butanoic acid, Asp(But)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of H-Asp(OtBu)-OH?

The CAS Registry Number of H-Asp(OtBu)-OH is 3057-74-7. It is also known as 4-tert-Butyl hydrogen L-aspartate, 4-(1,1-Dimethylethyl) hydrogen L-aspartate, L-Aspartic acid 4-tert-butyl ester.

What is the molecular formula and molecular weight of H-Asp(OtBu)-OH?

H-Asp(OtBu)-OH has the molecular formula C8H15NO4 and a molecular weight of 189.21 g/mol. Its IUPAC name is (2S)-2-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid.

Which grade and pack sizes of H-Asp(OtBu)-OH can I order?

We supply H-Asp(OtBu)-OH, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with H-Asp(OtBu)-OH?

Yes. Every lot of H-Asp(OtBu)-OH is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can H-Asp(OtBu)-OH be shipped internationally?

Yes. H-Asp(OtBu)-OH is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.