재고 위치
- New Jersey, USA
- Czech Republic, EU
- Mumbai, India
* 재고 가용성에 따라 다름
Documentation
포함 사항: HPLC, MASS/LC-MS, 1H NMR, FT-IR, 함량, 구조 규명 보고서(SER), 그리고 제품에 따라 추가 분석 데이터가 제공됩니다.
온라인 주문
에 대한 추가 정보 CAS
1. Investigation Approach:
Impurity Peak Reproduction: Replicating stress conditions within laboratories to reproduce impurity formation and increase corresponding chromatographic peaks. Peak Recognition: Optimizing chromatographic methods to resolve and identify the peak of interest.2. MS (Mass Spectrometry) Experiments:
MS and MS2 Experiments: Conducting mass spectrometry scans on the sample to identify ionizable species present under the peak, followed by fragmentation experiments on selected parent ions to hypothesize molecular structure.3. Confirmatory Experiments:
Assaying putative identities using commercially available standards and customized analytical methods.4. Impurity Isolation:
Evaluating the feasibility of preparative method scale-up, performing isolation cycles, and providing NMR characterization when needed.5. Toxicological Risk Assessment:
Classifying impurities based on ICH M7 guidelines for hazard assessment involving database searches for carcinogenicity and bacterial mutagenicity data.6. In Silico Prediction:
Utilizing in silico QSAR predictors for predicting toxicological profiles when relevant data from literature is not available.7. Permitted Daily Exposure (PDE) Determination:
Deriving PDE for systemic toxicity based on substance-specific doses is unlikely to cause adverse effects with daily exposure over a lifetime.8. Margin Of Safety (MOS):
Comparing PDE with Maximum Daily Intake (MDI) to determine MOS and associated toxicological concerns.설명
Impurity profiling is a critical aspect of pharmaceutical manufacturing | ensuring the quality and safety of drug products. The identification and characterization of unknown impurities are essential steps in this process | as they can pose potential health risks to patients. Here?s an overview of the techniques and procedures used for structural elucidation of unknown impurities in pharmaceutical products: We employ a range of methods to separate impurities from your compound. Prior to purification | we may conduct experiments to enhance impurity levels through forced degradation reactions. Our goal is to purify or isolate the compound using techniques such as liquid-liquid extraction | normal phase or reversed-phase purification | semi-preparative HPLC | crystallization | etc. | to obtain sufficient quantities of the impurity (ies). This will enable us to conduct analyses for their structural elucidation.
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