Our internally designated N-[(S)-(2,3,4,5,6-pentafluorophenoxy)phenoxyphosphinyl]-L-alaninel-Methylethyl ester (CAS: 1334513-02-8), holds multiple identities in pharmaceutical chemistry: it is both Sofosbuvir Impurity 75 and the core Sofosbuvir Intermediate 5, as well as a key reactant. Although it does not directly face patients like the finished drug, it is an indispensable precision gear in the entire Sofosbuvir synthesis pathway, directly impacting the quality and safety of the final API.
N-[(S)-(2,3,4,5,6-pentafluorophenoxy)phenoxyphosphinyl]-L-alaninel-Methylethyl ester – Precise Targeting, Unlocking Value: As a core building block of Sofosbuvir (GS-7977), N-[(S)-(2,3,4,5,6-pentafluorophenoxy) phenoxyphosphinyl]-L-alanine 1-methylethyl ester is primarily used to introduce the key phosphoryl side chain. Its optical and chemical purity directly determine the quality and efficacy of the final Sofosbuvir API, making it a critical link in the R&D and quality control of hepatitis C treatments.
Beyond Impurity, Delivering Value: N-[(S)-(2,3,4,5,6-pentafluorophenoxy)phenoxyphosphinyl]-L-alaninel-Methylethyl ester is not a useless by‑product. As an impurity standard, our product, backed by detailed characterization data compliant with pharmacopoeial standards, serves as a "ruler" in analytical method validation (AMV) and quality control (QC). Simultaneously, it is an active intermediate for synthesizing phosphoramidate prodrugs with higher anti‑HCV activity. This dual role makes N-[(S)-(2,3,4,5,6-pentafluorophenoxy) phenoxyphosphinyl]-L-alaninel-Methylethyl ester indispensable at different stages of drug R&D.
Process Innovation, Cost Advantage: Leveraging our GMP-certified manufacturing base and multiple flexible production lines, we achieve seamless scale-up from R&D to commercial cGMP production. Our synthetic process employs innovative chiral induction technology to ensure high batch-to-batch consistency. A stable supply chain shortens lead times to 1–2 weeks and offers competitive pricing for long-term partners.
Product Parameters
Parameter
Specification
CAS Number
1334513-02-8
Molecular Formula
C₁₈H₁₇F₅NO₅P
Molecular Weight
453.30 g/mol
Purity (HPLC)
≥98%
Any Single Impurity
≤0.5%
Total Impurities
≤1.0%
Melting Point
133–139°C
Density
1.4±0.1 g/cm³
Boiling Point
442.6±55.0°C (at 760 mmHg)
Flash Point
221.5±31.5°C
Refractive Index
1.497
Appearance
Solid
StorageStore
2-8℃
Product Features & Quality Commitment
● Fast Delivery: Standard specifications are in stock, ready to ship within 1 week after order confirmation.
● High Purity: Produced with state-of-the-art purification processes to meet or exceed customer purity requirements.
● Customizable Packaging: Available in various pack sizes from grams to kilograms; special packaging available on request.
● Technical Support: Our expert technical team is available to assist with process development and regulatory filing inquiries.
Frequently Asked Questions (FAQ)
Q1: Is this intermediate primarily used for generic (ANDA) or innovative drug R&D?
A: Both. It is a critical tool for impurity profiling and quality research in Sofosbuvir generic development, as well as a core raw material for originator companies and CRO/CDMOs exploring new synthetic routes or novel molecules in process R&D.
Q2: Does the product require special temperature control during shipping?
A: Under normal transport conditions, the compound is stable and can be shipped as a regular chemical without a cold chain. All orders are sealed in high-barrier packaging with shock-absorbing material.
Contact Us
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