Understanding PA 18 30600 (CAS 2084828-53-3): A Ritonavir Impurity Reference Standard

 Understanding PA 18 30600 (CAS 2084828-53-3)

When it comes to pharmaceutical research, accuracy and reliability are everything. Even the smallest impurity in a drug substance can have a major impact on safety, quality, and regulatory acceptance. That’s where reference standards come into play—they act as benchmarks to measure, compare, and validate results in the lab.

One such important compound is PA 18 30600 (CAS 2084828-53-3), a Ritonavir impurity offered by Pharmaffiliates. Let’s take a closer look at what it is, why it matters, and how researchers use it in everyday pharmaceutical science.

A Ritonavir Impurity Reference Standard

What Is PA 18 30600?

The chemical name may sound intimidating—Thiazol-5-ylmethyl ((5S,6S,8S,11S,15S,17S,18S)-5,8,15-tribenzyl-6,17-dihydroxy-11-isopropyl-3,10,13-trioxo-19-phenyl-1-(thiazol-5-yl)-2-oxa-4,9,12,14-tetraazanonadecan-18-yl)carbamate—but in simple terms, PA 18 30600 is a Ritonavir impurity.

Ritonavir, as many know, is a well-established antiviral drug. Studying its impurities is essential for ensuring the drug’s purity and safety during production. This particular impurity helps labs:

  • Test the accuracy of their analytical methods
  • Identify trace levels of related compounds in formulations
  • Support regulatory submissions where impurity profiling is required

Key Features of This Reference Standard

  • CAS Number: 2084828-53-3
  • Catalog Number: PA 18 30600
  • Molecular Weight: 976.22 g/mol
  • Supplied With: Certificate of Analysis (COA) and supporting data

It’s manufactured under strict quality standards, ensuring that researchers and QC labs can trust the results.

Why Is It Important?

Pharmaceutical companies need to prove not just that their drugs work, but also that they are consistent, pure, and free from harmful impurities. Reference standards like PA 18 30600:

  • Help scientists validate HPLC or LC-MS methods
  • Provide benchmarks for method development and validation
  • Ensure compliance with global regulatory expectations

For researchers, having such a well-defined impurity standard saves time, improves accuracy, and provides confidence in data.

Storage and Handling

One of the advantages of this compound is that it is stable under normal lab conditions. It should be stored in the refrigerator at 2–8 °C, while shipping can be done at ambient temperature, making logistics easier for global labs.

The Pharmaffiliates Advantage

Pharmaffiliates has built a strong reputation in the field of reference standards, impurities, and custom synthesis. With global presence in more than 95 countries and an inventory of over 100,000 research compounds, the company provides trusted solutions to the pharmaceutical and biotech industries.

By offering PA 18 30600 along with detailed documentation, Pharmaffiliates ensures that researchers have everything they need for reliable and reproducible results.


PA 18 30600 (CAS 2084828-53-3) may look like just another long chemical name, but for scientists, it is an essential reference tool. Whether for impurity profiling, regulatory filings, or quality control, this Ritonavir impurity standard plays a critical role in advancing pharmaceutical safety and compliance.

If you work in drug development or analytical research, having access to high-quality reference standards like PA 18 30600 can make all the difference.

 

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