Fmoc-Phe-Lys(Boc)-PAB-PNP CAS 1646299-50-4
| CAS No. | 1646299-50-4 |
| Molecular Formula | C49H51N5O11 |
| Molecular Weight | 885.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Fmoc-Phe-Lys(Boc)-PAB-PNP (CAS 1646299-50-4), molecular formula C49H51N5O11 and molecular weight 885.96 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Fmoc-Phe-Lys(Boc)-PAB-PNP (C49H51N5O11) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 27.0, corresponding to approximately 27 ring(s) or double-bond equivalent(s). With a molecular weight of 885.96 g/mol, it falls into the high-molecular-weight range. 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).
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 | C49H51N5O11 |
| Molecular Weight | 885.96 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) | 27.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 5 |
Related Fmoc Standards
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- Fmoc-Cys((RS)-2,3-di(palmitoyloxy)-propyl)-OH (CAS 210532-98-2)
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- Fmoc-His(Trt))-Ala-Glu-(otBU)-OH (CAS CATO-CPTD789034)
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Recommended Standards
- (9-(4-(Diphenylamino)phenyl)-9-phenyl-9H-fluorene-2,7-diyl)bis(diphenylphosphine oxide) (CAS 1198361-98-6)
- [Met5,Arg6] Enkephalin-Arg (CAS 76496-10-1)
- LNA-A(Bz) amidite (CAS 206055-79-0)
- Velpatasvir D3 (CAS 2172676-06-9)
- 2-Ethynyl-5-nitrothiophene (CAS 74610-87-0)
- 2-(6-Chloro-[3,4'-bipyridin]-4-yl)acetic acid (CAS 1227579-94-3)
- 4-Ethynylthiophene-2-carbaldehyde (CAS 913828-75-8)
- Methyl 3-methyl-2-oxo-1,2,3,4-tetrahydroquinoline-7-carboxylate (CAS 813425-29-5)
- 4'-Amino-[1,1'-biphenyl]-4-carboxylic acid hydrochloride (CAS 41567-82-2)
- (4S,4′S)-2,2′-(5-Nitro-1,3-phenylene)bis[4,5-dihydro-4-(phenylmethyl)oxazole] (CAS 926625-38-9)
- ((4-Fluorophenyl)sulfonyl)serine (CAS 97801-44-0)
- (R)-1-(3-fluoro-4-methoxyphenyl)butan-1-amine (CAS 1213964-50-1)
- Epistane Discontinued See T344425 (CAS 4267-80-5)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
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