Erythro-β,3-Dihydroxy-DL-tyrosine

Name: Erythro-β,3-Dihydroxy-DL-tyrosine
Brand: Vaqora Chemicals
SKU: VQ-025431

About Erythro-β,3-Dihydroxy-DL-tyrosine

Listed under CAS 16322-99-9, Erythro-β,3-Dihydroxy-DL-tyrosine is an impurity of Droxidopa available from Vaqora Chemicals. With the molecular formula C9H11NO5, it has a molar mass of 213.19 g/mol. Its systematic (IUPAC) name is (2S,3S)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid. Alternative names: DL-erythro-3-(3,4-Dihydroxyphenyl)serine and Droxidopa Erythro Isomer.

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. Good laboratory practice and suitable PPE are recommended during handling.

Pharmaceutical QC and development laboratories use this impurity standard of Droxidopa to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Erythro-β,3-Dihydroxy-DL-tyrosine 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 Droxidopa

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

Droxidopa impurities

Specifications & identifiers

Chemical identifiers
Product name	Erythro-β,3-Dihydroxy-DL-tyrosine
Catalogue No.	VQ-025431
CAS Number	16322-99-9
IUPAC name	(2S,3S)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid
Molecular formula	C₉H₁₁NO₅
Molecular weight	213.19 g/mol
Exact mass	213.0637
Grade	Reference Standard
HSN code	38229090
InChIKey	QXWYKJLNLSIPIN-YUMQZZPRSA-N
SMILES	C1=CC(=C(C=C1[C@@H]([C@@H](C(=O)O)N)O)O)O
PubChem CID	6999030

Physical properties
Physical form	Solid
LogP (XLogP3)	-3.2
H-bond donors / acceptors	5 / 6
TPSA	124 Å²
Synonyms	DL-erythro-3-(3,4-Dihydroxyphenyl)serine, Droxidopa Erythro Isomer, Erythro-beta,3-dihydroxy-DL-tyrosine, erythro-beta,3-Dihydroxy-L-tyrosine, DL-erythro-Droxidopa

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 Erythro-β,3-Dihydroxy-DL-tyrosine?

The CAS Registry Number of Erythro-β,3-Dihydroxy-DL-tyrosine is 16322-99-9. It is also known as DL-erythro-3-(3,4-Dihydroxyphenyl)serine, Droxidopa Erythro Isomer, Erythro-beta,3-dihydroxy-DL-tyrosine.

What is the molecular formula and molecular weight of Erythro-β,3-Dihydroxy-DL-tyrosine?

Erythro-β,3-Dihydroxy-DL-tyrosine has the molecular formula C9H11NO5 and a molecular weight of 213.19 g/mol. Its IUPAC name is (2S,3S)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid.

What is Erythro-β,3-Dihydroxy-DL-tyrosine used for?

Erythro-β,3-Dihydroxy-DL-tyrosine is supplied as a characterised reference material related to Droxidopa. 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 Erythro-β,3-Dihydroxy-DL-tyrosine can I order?

We supply Erythro-β,3-Dihydroxy-DL-tyrosine 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 Erythro-β,3-Dihydroxy-DL-tyrosine?

Yes. Every lot of Erythro-β,3-Dihydroxy-DL-tyrosine 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 Erythro-β,3-Dihydroxy-DL-tyrosine be shipped internationally?

Yes. We export Erythro-β,3-Dihydroxy-DL-tyrosine worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.