Ritonavir EP Impurity B

Name: Ritonavir EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-023656

About Ritonavir EP Impurity B

Ritonavir EP Impurity B is a pharmacopeial impurity of Ritonavir carrying the CAS registry number 765875-58-9. Formula C28H36N4O4S, molecular weight 524.7 g/mol. Common synonyms include Ritonavir - Impurity B (Freebase) and Ritonavir impurity B.

It is supplied 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.

This Ritonavir 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.

We offer Ritonavir EP Impurity B in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Pharmacopeial method verification
Impurity profiling
QC release testing
ANDA / DMF filings

Industries

Related to Ritonavir

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

Ritonavir impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Ritonavir EP Impurity B
Catalogue No.	VQ-023656
CAS Number	765875-58-9
IUPAC name	1,3-thiazol-5-ylmethyl N-[(2S,3S,5S)-5-[[(2S)-2-amino-3-methylbutanoyl]amino]-3-hydroxy-1,6-diphenylhexan-2-yl]carbamate
Molecular formula	C₂₈H₃₆N₄O₄S
Molecular weight	524.7 g/mol
Exact mass	524.2457
Grade	Reference Standard
HSN code	38229090
InChIKey	JJZMZBZVLFGIEU-GKXKVECMSA-N
SMILES	CC(C)[C@@H](C(=O)N[C@@H](CC1=CC=CC=C1)C[C@@H]([C@H](CC2=CC=CC=C2)NC(=O)OCC3=CN=CS3)O)N
PubChem CID	22863038

Physical properties
Physical form	Solid
LogP (XLogP3)	4.1
H-bond donors / acceptors	4 / 7
TPSA	155 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 Ritonavir EP Impurity B?

The CAS Registry Number of Ritonavir EP Impurity B is 765875-58-9. It is also known as Ritonavir - Impurity B (Freebase), Des((2-isopropylthiazol-4-yl)methyl-methyl-carbamoyl)ritonavir, Ritonavir impurity B.

What is the molecular formula and molecular weight of Ritonavir EP Impurity B?

Ritonavir EP Impurity B has the molecular formula C28H36N4O4S and a molecular weight of 524.7 g/mol. Its IUPAC name is 1,3-thiazol-5-ylmethyl N-[(2S,3S,5S)-5-[[(2S)-2-amino-3-methylbutanoyl]amino]-3-hydroxy-1,6-diphenylhexan-2-yl]carbamate.

What is Ritonavir EP Impurity B used for?

Ritonavir EP Impurity B is supplied as a characterised reference material related to Ritonavir. 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 Ritonavir EP Impurity B can I order?

We supply Ritonavir EP Impurity B 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 Ritonavir EP Impurity B?

Yes. Every lot of Ritonavir EP Impurity B 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 Ritonavir EP Impurity B be shipped internationally?

Yes. We export Ritonavir EP Impurity B worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.