Fmoc-L-A4paa(tBu)-OH CAS 2680607-35-4
| CAS No. | 2680607-35-4 |
| Molecular Formula | C29H36N2O6 |
| Molecular Weight | 508.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Fmoc-L-A4paa(tBu)-OH.
Fmoc-L-A4paa(tBu)-OH (CAS 2680607-35-4), molecular formula C29H36N2O6 and molecular weight 508.61 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Fmoc-L-A4paa(tBu)-OH (C29H36N2O6) 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.
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.
Physical & Chemical Properties
| Molecular Formula | C29H36N2O6 |
| Molecular Weight | 508.61 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | ≥95% |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2002 |
| Nitrogen Atoms | 2 |
Related Fmoc Standards
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Recommended Standards
- Belumosudil Impurity 63 (CAS CATO-C4X-298863)
- 3-Amino-N-(4-(N-(4,6-dimethylpyrimidin-2-yl)sulfamoyl)phenyl)-5,6,7,8-tetrahydrothieno[2,3-b]quinoline-2-carboxamide (CAS 400863-72-1)
- Evocalcet Impurity 70 (CAS 3054081-82-9)
- Eplerenone Impurity 20 (CAS CATO-C4X-163020)
- 4-Chloro-2-(trifluoromethoxy)benzonitrile (CAS 1261878-30-1)
- 2-(Ethylsulfanyl)quinoline-3-carbaldehyde (CAS 478065-48-4)
- 3-Chloro-5-fluoro-2-hydroxy-benzoic acid (CAS 4068-62-6)
- Vildagliptin Impurity 113 (CAS 3099756-00-7)
- 3-Methyl-3,4-dihydroquinoxaline-2(1H)-thione (CAS 149668-97-3)
- 3,5-Diiodo-4(4'-methoxyphenoxy)benzoic Acid Methyl Ester (CAS 33927-09-2)
- 6-(3,5-Dimethoxyphenyl)pyrido[2,3-d]pyrimidine-2,7-diamine (CAS 192705-78-5)
- Ethyl 3-(2,6-difluorophenyl)prop-2-enoate (CAS 609359-56-0)
- (E)-ethyl 2-methylhex-4-enoate (CAS 118942-48-6)
- Insulin Degludec Impurity 6 (CAS CATO-C4X-21576)
Why CATO?
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