DL-Threo-Droxidopa

Name: DL-Threo-Droxidopa
Brand: Vaqora Chemicals
SKU: VQ-036846

About DL-Threo-Droxidopa

Listed under CAS 3916-18-5, DL-Threo-Droxidopa is an impurity of Droxidopa available from Vaqora Chemicals. With the molecular formula C9H11NO5, it has a molar mass of 213.19 g/mol. Systematically, it is named (2S,3R)-2-amino-3-(3,4-dihydroxyphenyl)-3-hydroxypropanoic acid. Alternative names: L-DOPS and threo-Dopaserine.

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. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

As a characterised impurity of Droxidopa, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, DL-Threo-Droxidopa 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	DL-Threo-Droxidopa
Catalogue No.	VQ-036846
CAS Number	3916-18-5
IUPAC name	(2S,3R)-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-JGVFFNPUSA-N
SMILES	C1=CC(=C(C=C1[C@H]([C@@H](C(=O)O)N)O)O)O
PubChem CID	92974

Physical properties
Physical form	Solid
LogP (XLogP3)	-3.2
H-bond donors / acceptors	5 / 6
TPSA	124 Å²
Synonyms	L-DOPS, threo-Dopaserine, L-threo-DOPS, L-Threodops, L-dihydroxyphenylserine, L-threo-dihydroxyphenylserine, L-Tyrosine, beta,3-dihydroxy-, threo-, threo DOPS, threo-DOPS, 3,4 threo DOPS, 3,4-threo-DOPS, 3,4 Dihydroxyphenylserine

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 DL-Threo-Droxidopa?

The CAS Registry Number of DL-Threo-Droxidopa is 3916-18-5. It is also known as L-DOPS, threo-Dopaserine, L-threo-DOPS.

What is the molecular formula and molecular weight of DL-Threo-Droxidopa?

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

What is DL-Threo-Droxidopa used for?

DL-Threo-Droxidopa 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 DL-Threo-Droxidopa can I order?

We supply DL-Threo-Droxidopa 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 DL-Threo-Droxidopa?

Yes. Every lot of DL-Threo-Droxidopa 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 DL-Threo-Droxidopa be shipped internationally?

Yes. DL-Threo-Droxidopa 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.