O-(N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N4-trityl-L-asparaginyl)-N-(tert-butoxycarbonyl)-L-threonine CAS 944283-34-5
| CAS No. | 944283-34-5 |
| Molecular Formula | C47H47N3O9 |
| Molecular Weight | 797.89 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
O-(N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N4-trityl-L-asparaginyl)-N-(tert-butoxycarbonyl)-L-threonine (CAS 944283-34-5), molecular formula C47H47N3O9 and molecular weight 797.89 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, O-(N2-(((9H-fluoren-9-yl)methoxy)carbonyl)-N4-trityl-L-asparaginyl)-N-(tert-butoxycarbonyl)-L-threonine is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 797.89 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.
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 | C47H47N3O9 |
| Molecular Weight | 797.89 g/mol |
| 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) | 26.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 5,10-Dioxa-2,8-diazaundecanoic acid, 3-carboxy-11-(9H-fluoren-9-yl)-6,9-dioxo-7-[3-oxo-3-[(triphenylmethyl)amino]propyl]-, 1-(1,1-dimethylethyl) ester, (3S,7S)- (CAS 944283-19-6)
- 183663-89-0 (Boc-Tyr1,D-Ala2)-Leu-Enkephalin-Lys MFCD00236981 (CAS 183663-89-0)
- (S)-1-(Bis(4-methoxyphenyl)(phenyl)methoxy)-3-(2-isobutyramido-6-oxo-1H-purin-9(6H)-yl)propan-2-yl (2-cyanoethyl) diisopropylphosphoramidite (CAS 182625-68-9)
- Fmoc-Glu(biotinyl-PEG)-OH (CAS 817169-73-6)
- 3-[(diphenylmethyl)amino]propan-1-ol (CAS 164165-32-6)
- Tyrphostin 25 (CAS 118409-58-8)
- 2-Cyclopropyl-2-hydroxyacetic Acid (CAS 5617-84-5)
- Phenylthiotri-n-butyltin (CAS 17314-33-9)
- 4-Bromo-N-(4-bromo-3-fluorophenyl)benzenesulfonamide (CAS 1024378-31-1)
- (2S,3S)-3-((1H-imidazol-1-yl)methyl)tetrahydrofuran-2-carboxylic acid (CAS 1820580-03-7)
- 2-(Azetidin-3-yloxy)-N-methylacetamide (CAS 1341385-45-2)
- Levosimendan Impurity 81 (CAS CATO-C4X-130881)
- Calystegine A3 (CAS 131580-36-4)
- Semaglutide impurity 92 (CAS CATO-C4X-222692)
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