(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)-2-methylpentanoic acid CAS 171860-40-5
| CAS No. | 171860-40-5 |
| Molecular Formula | C26H32N2O6 |
| Molecular Weight | 468.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)-2-methylpentanoic acid (CAS 171860-40-5), molecular formula C26H32N2O6 and molecular weight 468.54 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)-2-methylpentanoic acid (C26H32N2O6) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 468.54 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)-2-methylpentanoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C26H32N2O6 |
| Molecular Weight | 468.54 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 2 |
Recommended Standards
- (S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-5-((tert-butoxycarbonyl)amino)-2-methylpentanoic acid (CAS 1315449-95-6)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)(methyl)amino)-5-((tert-butoxycarbonyl)amino)pentanoic acid (CAS 1793105-28-8)
- Nonyl β-D-maltopyranoside (CAS 106402-05-5)
- ((1R,4aR,5S,6S,6aS,7S,8S,9R,11aS,11bS)-5-Acetoxy-1,6,7,8-tetrahydroxy-4,4-dimethyldodecahydro-1H-6,11b-(epoxymethano)-6a,9-methanocyclohepta[a]naphthalen-8-yl)methyl acetate (CAS 90468-72-7)
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- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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