Cyclosporine A – USP / Ph. Eur. Reference Standard (CAS 59865-13-3)
Cyclosporine A (CsA, CAS 59865-13-3) is a cyclic peptide immunosuppressant with widespread clinical use in transplant medicine and autoimmune disease management. ReChem Labs supplies Cyclosporine A as an official USP Reference Standard and Ph. Eur.-compliant material with≥99.0% purity by titrimetric assay, ensuring direct applicability to compendial testing methods.
HPLC purity profiling, titrimetric assay per USP monograph, and identity confirmation by IR and NMR characterize each batch. The batch-specific COA documents all specification parameters required for regulatory use, including impurity profiles and system suitability data.
Key applications include: USP and Ph. Eur. compendial testing for cyclosporine formulations, HPLC and LC-MS/MS method calibration and validation, clinical laboratory TDM method development, proficiency testing and EQAS calibration, and quality control of CsA-containing pharmaceutical preparations.
Product Specifications
| CAS Number | 59865-13-3 |
| Molecular Formula | C₆₂H₁₁₁N₁₁O₁₂ |
| Purity | ≥99.0% (titrimetric) |
| Standard Type | USP RS / Ph. Eur. |
| Storage | 2–8°C, protect from light |
| Pack Sizes | 20 mg | 50 mg | 100 mg |
| Documentation | Batch COA, SDS, GHS Label, USP Monograph Ref. |
Key Features
- Purity ≥99.0% by titrimetric assay per official USP monograph
- Compliant with USP Reference Standard and Ph. Eur. specifications
- Full impurity profile and system suitability data documented in COA
- Identity confirmed by IR spectroscopy and NMR
- Suitable for compendial testing, TDM calibration, and EQAS
- Same-day dispatch from Houston, TX (orders placed before 2 PM CST)
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