L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-L-isoleucyl]-, phenylmethyl ester CAS 75759-87-4
| CAS No. | 75759-87-4 |
| Molecular Formula | C27H36N2O5 |
| Molecular Weight | 468.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-L-isoleucyl]-, phenylmethyl ester (CAS 75759-87-4), molecular formula C27H36N2O5 and molecular weight 468.59 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-L-isoleucyl]-, phenylmethyl ester (C27H36N2O5) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.) | 1978 |
| Nitrogen Atoms | 2 |
Related L Standards
- L-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester (CAS 140834-91-9)
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Recommended Standards
- Kyprolis Impurity K (CAS 70637-26-2)
- Repaglinide M4 Metabolite (3'-Hydroxyl Repaglinide) (Mixture of Diastereomers) (CAS 874908-14-2)
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- Ivabradine Impurity 31 (CAS 167072-91-5)
- Benorilate (CAS 5003-48-5)
- Pentyl 2-mercaptoacetate (CAS 6380-70-7)
- 1-(5-(Trifluoromethyl)pyridin-3-yl)cyclopropan-1-amine hydrochloride (CAS 2149601-57-8)
- 1,2,5-Trihydroxy-9H-xanthen-9-one (CAS 156640-23-2)
- Ethyl 2-Chloro-4-(methylthio)pyrimidine-5-carboxylate (CAS 643086-93-5)
- 2-Phenylbenzo[f][1,4]oxazepine-3,5(2H,4H)-dione (CAS 95594-17-5)
- 1-Chloro-4-(2-chloroallyl)-2-methylbenzene (CAS 951888-23-6)
- 2-Carbamimidoylpyridine 1-oxide (CAS 845505-67-1)
- Fezolinetant Impurity 20 (CAS CATO-C4X-327020)
- Insulin Degludec Impurity 17 (CAS CATO-C4X-215717)
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