Overview
Sirolimus Standard is a certified reference material derived from the macrolide compound sirolimus (rapamycin), primarily used for quality control in pharmaceutical manufacturing and biomedical research. As an immunosuppressant drug standard, it serves as a benchmark for potency testing, method validation, and instrument calibration in laboratories. The standard is produced under strict quality controls to ensure batch-to-batch consistency, typically meeting pharmacopeial specifications (USP/EP). Its traceability to international measurement standards makes it essential for regulatory compliance in drug development and production processes.
Physical and Chemical Properties
Sirolimus Standard exhibits characteristic stability when stored properly, maintaining its chemical integrity at recommended temperatures. The powder form allows for precise weighing and preparation of stock solutions, typically using organic solvents like DMSO due to limited water solubility. Key analytical parameters include UV-Vis absorption maxima (277 nm) and specific optical rotation. The material undergoes rigorous testing for impurities (including everolimus and other related substances) to ensure suitability for HPLC and LC-MS applications. Thermal analysis confirms the sharp melting point characteristic of a pure crystalline substance.
Main Applications
In pharmaceutical quality control, Sirolimus Standard is indispensable for assay validation of immunosuppressant formulations, particularly oral solutions and tablets. Research laboratories employ it as a reference in pharmacokinetic studies and metabolite identification. The standard supports method development for therapeutic drug monitoring in transplant patients. Additionally, it serves as a calibration standard in clinical chemistry analyzers and as a system suitability test material for chromatographic systems according to ICH guidelines.
Safety and Storage
As a bioactive compound, Sirolimus Standard requires careful handling with appropriate personal protective equipment (PPE) including nitrile gloves and lab coats. Work should be conducted in fume hoods when preparing solutions to minimize exposure risks. Long-term stability is maintained at -20°C in tightly sealed amber vials with desiccants. The material is sensitive to light and humidity, requiring protection during weighing procedures. Properly sealed vials typically maintain stability for 2-3 years when stored correctly, though users should always verify specific expiration dates from the certificate of analysis.
B2B Procurement Guide
When sourcing Sirolimus Standard, prioritize suppliers with ISO 17034 accreditation for reference materials. Key documentation requirements include a detailed certificate of analysis (CoA) with HPLC purity data, residual solvent information, and traceability statements. Batch-specific validation data should confirm suitability for intended applications (e.g., USP monograph testing). For bulk procurement (gram quantities), request stability studies and consider splitting large orders into smaller aliquots to preserve material integrity. Lead times for certified standards typically range 2-4 weeks, with express options available at premium pricing.
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