L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester CAS 140834-91-9
| CAS No. | 140834-91-9 |
| Molecular Formula | C27H36N2O5 |
| Molecular Weight | 468.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester (CAS 140834-91-9) is a high-purity analytical reference standard with the molecular formula C27H36N2O5 and a molecular weight of 468.59 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 468.59 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester 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 | C27H36N2O5 |
| Molecular Weight | 468.59 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 2 |
Related L Standards
- D-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-L-leucyl]-, phenylmethyl ester (CAS 159549-96-9)
- D-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester (CAS 159549-97-0)
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