Ent-Oseltamivir Phosphate

About Ent-Oseltamivir Phosphate

Ent-Oseltamivir Phosphate is an impurity of Oseltamivir carrying the CAS registry number 1035895-89-6. Its molecular formula is C16H31N2O8P and its molecular weight is 410.4 g/mol.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Good laboratory practice and suitable PPE are recommended during handling.

Pharmaceutical QC and development laboratories use this impurity standard of Oseltamivir to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

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

Industries

Related to Oseltamivir

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

Oseltamivir impurities

Specifications & identifiers

Chemical identifiers
Product name	Ent-Oseltamivir Phosphate
Catalogue No.	VQ-038810
CAS Number	1035895-89-6
IUPAC name	ethyl (3S,4S,5R)-4-acetamido-5-amino-3-pentan-3-yloxycyclohexene-1-carboxylate;phosphoric acid
Molecular formula	C₁₆H₃₁N₂O₈P
Molecular weight	410.4 g/mol
Exact mass	410.1818
Grade	Reference Standard
HSN code	38229090
InChIKey	PGZUMBJQJWIWGJ-DSMRVHDJSA-N
SMILES	CCC(CC)O[C@H]1C=C(C[C@H]([C@@H]1NC(=O)C)N)C(=O)OCC.OP(=O)(O)O
PubChem CID	51064084

Physical properties
Physical form	Solid
H-bond donors / acceptors	5 / 9
TPSA	168 Å²

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 Ent-Oseltamivir Phosphate?

The CAS Registry Number of Ent-Oseltamivir Phosphate is 1035895-89-6. It is also known as (3S,4S,5R)-Ethyl 4-acetamido-5-amino-3-(pentan-3-yloxy)cyclohex-1-enecarboxylate phosphate, (3S,4S,5R)-Ethyl4-acetamido-5-amino-3-(pentan-3-yloxy)cyclohex-1-enecarboxylatephosphate.

What is the molecular formula and molecular weight of Ent-Oseltamivir Phosphate?

Ent-Oseltamivir Phosphate has the molecular formula C16H31N2O8P and a molecular weight of 410.4 g/mol.

What is Ent-Oseltamivir Phosphate used for?

Ent-Oseltamivir Phosphate is supplied as a characterised reference material related to Oseltamivir. 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 Ent-Oseltamivir Phosphate can I order?

We supply Ent-Oseltamivir Phosphate 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 Ent-Oseltamivir Phosphate?

Yes. Every lot of Ent-Oseltamivir Phosphate 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 Ent-Oseltamivir Phosphate be shipped internationally?

Yes. We export Ent-Oseltamivir Phosphate worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.