Oncology, Endocrine & Advanced API Impurity Standards – Complete CAS Number Reference | Spectrasynth

Oncology & Advanced API Impurity Standards With CAS Numbers | Spectrasynth India IntroductionOncology, endocrine, antidiabetic, and specialty APIs are among the most chemically complex and regulatory-sensitive categories in pharmaceuticals. These molecules often produce degradation impurities, process intermediates, and stereochemical variations that require high-purity reference standards.Spectrasynth supports global pharmaceutical companies with CAS-verified impurity standards, advanced custom synthesis, and complete analytical characterization.This blog lists impurity standards for major APIs including Docetaxel, Bortezomib, Imatinib, Dolutegravir, Vildagliptin, Entacapone, Etoricoxib, Abiraterone, Alogliptin, and more.1. Vildagliptin Impurities (Antidiabetic)Widely used DPP-4 inhibitor requiring precise impurity profiling.Spectrasynth offers:Vildagliptin Impurity A — CAS 274901-16-5Vildagliptin Impurity B — CAS 274901-25-6Vildagliptin Carboxamide Impurity — CAS 274901-32-3These impurities support method validation, forced degradation, and ANDA submissions.2. Alogliptin Impurities (Antidiabetic)Available impurities:Alogliptin Impurity A — CAS 850649-62-5Alogliptin Impurity B — CAS 850649-63-63. Docetaxel Impurities (Oncology)Docetaxel is a complex taxane requiring stringent impurity characterization.Spectrasynth supplies:Docetaxel Impurity A — CAS 148408-66-6Docetaxel Impurity B — CAS 148408-67-74. Bortezomib Impurities (Oncology)Used in multiple myeloma therapies.Available impurities:Bortezomib Impurity A — CAS 179324-69-7Bortezomib Impurity B — CAS 179324-70-05. Imatinib Impurities (Targeted Therapy)Revolutionary oncology molecule.Impurities include:Imatinib Impurity A — CAS 152459-95-5Imatinib Impurity B — CAS 152459-96-66. Abiraterone Impurity (Prostate Cancer Therapy)Abiraterone Impurity A — CAS 154229-18-27. Entacapone Impurities (Parkinson’s Disease)Although CNS-related, chemically part of specialty APIs.Spectrasynth offers:Entacapone Impurity A — CAS 130929-57-6Entacapone Impurity B — CAS 130929-58-78. Dolutegravir Impurities (HIV Antiviral / Integrase Inhibitor)Critical for ANDA and DMF impurity profiling.Available impurities:Dolutegravir Impurity A — CAS 1051373-41-6Dolutegravir Impurity B — CAS 1051373-42-79. Esomeprazole Impurities (Gastric Acid Control)Spectrasynth offers:Esomeprazole Impurity A — CAS 172060-41-4Esomeprazole Impurity B — CAS 172060-42-510. Celecoxib Impurities (Anti-inflammatory / COX-2)Celecoxib Impurity A — CAS 169590-42-5Celecoxib Impurity B — CAS 169590-43-611. Relugolix Impurities (Endocrine Therapy)Used in hormone suppression therapies.Relugolix Impurity A — CAS 530141-72-512. Androsterone (Steroid Standard)Androsterone — CAS 774-40-6Additional Specialty API StandardsThese advanced impurities support synthetic pathway validation and impurity profiling:✔ Thiazolylacetyl Glycine Oxime — CAS 178949-03-6✔ Fructose-6-Phosphate — CAS 643-13-0✔ Fructose Sodium Diphosphate — CAS 23558-08-9✔ (R)-2-Chlorobutyric Acid — CAS 54053-45-1✔ Lacosamide Intermediate Stage-I — CAS 1253790-58-7Why Spectrasynth for Oncology & Advanced Impurities?Spectrasynth stands out with: ✔ High-purity reference standards (NMR, HPLC, LC-MS validated) ✔ ICH-compliant impurity synthesis ✔ Custom synthesis for rare, complex & novel impurities ✔ Batch-to-batch consistency ✔ Regulatory documentation support for ANDA, DMF & NDA submissions ✔ Global shipping with cold-chain options ✔ Strict confidentiality & IP protectionFrom oncology to antidiabetics, our impurity standards ensure accurate results for R&D, QC, and regulatory teams.ConclusionOncology, endocrine, and advanced APIs require high-precision impurity profiling due to their complex structures and regulatory scrutiny.Spectrasynth delivers CAS-verified, fully characterized impurity standards, enabling researchers to develop robust, compliant, and validated analytical methods.Whether you require impurities for Docetaxel, Bortezomib, Dolutegravir, Alogliptin, or Vildagliptin —Spectrasynth is your global partner for impurity standards and custom synthesis.📩 sales@spectrasynth.com🌐 www.spectrasynth.com