(S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethox… 76757-91-0

Name: (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid
Brand: Vaqora Chemicals
SKU: VQ-039474

About (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid

Listed under CAS 76757-91-0, (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid is an impurity of Levodopa available from Vaqora Chemicals. The compound has the formula C16H23NO5, corresponding to a molecular weight of 309.36 g/mol. Its systematic (IUPAC) name is (2S)-3-(4-ethoxyphenyl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid. It is also known as Boc-O-ethyl-L-tyrosine or Boc-Tyr(Et)-OH.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. Handle it with standard laboratory precautions and appropriate personal protective equipment.

This Levodopa impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Levodopa

View every impurity, metabolite and intermediate we list for Levodopa.

Levodopa impurities

Specifications & identifiers

Chemical identifiers
Product name	(S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid
Catalogue No.	VQ-039474
CAS Number	76757-91-0
IUPAC name	(2S)-3-(4-ethoxyphenyl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid
Molecular formula	C₁₆H₂₃NO₅
Molecular weight	309.36 g/mol
Exact mass	309.1576
Grade	Reference Standard
HSN code	38229090
InChIKey	NCLAAKQIHUIOIV-ZDUSSCGKSA-N
SMILES	CCOC1=CC=C(C=C1)C[C@@H](C(=O)O)NC(=O)OC(C)(C)C
PubChem CID	7017903

Physical properties
Physical form	Solid
LogP (XLogP3)	2.1
H-bond donors / acceptors	2 / 5
TPSA	84.9 Å²
Synonyms	Boc-O-ethyl-L-tyrosine, Boc-Tyr(Et)-OH, n-boc-o-ethyl-l-tyrosine, Boc-Tyr-OEt, (2S)-2-(tert-butoxycarbonylamino)-3-(4-ethoxyphenyl)propanoic acid, (2S)-2-{[(Tert-Butoxy)Carbonyl]Amino}-3-(4-Ethoxyphenyl)Propanoic Acid, Tyrosine, N-[(1,1-dimethylethoxy)carbonyl]-O-ethyl-, N-tert-Butoxycarbonyl-O-ethyl-L-tyrosine, N-(tert-Butoxycarbonyl)-O-ethyl-L-tyrosine, N-[(1,1-Dimethylethoxy)carbonyl]-O-ethyl-L-tyrosine, L-Tyrosine, N-[(1,1-dimethylethoxy)carbonyl]-O-ethyl-

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 (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid?

The CAS Registry Number of (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid is 76757-91-0. It is also known as Boc-O-ethyl-L-tyrosine, Boc-Tyr(Et)-OH, n-boc-o-ethyl-l-tyrosine.

What is the molecular formula and molecular weight of (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid?

(S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid has the molecular formula C16H23NO5 and a molecular weight of 309.36 g/mol. Its IUPAC name is (2S)-3-(4-ethoxyphenyl)-2-[(2-methylpropan-2-yl)oxycarbonylamino]propanoic acid.

What is (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid used for?

(S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid is supplied as a characterised reference material related to Levodopa. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid can I order?

We supply (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid?

Yes. Every lot of (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid 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 (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid be shipped internationally?

Yes. We export (S)-2-((tert-Butoxycarbonyl)amino)-3-(4-ethoxyphenyl)propanoic acid worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.