Fmoc-Asp(OBzl)-Cl CAS 148827-71-8
| CAS No. | 148827-71-8 |
| Molecular Formula | C26H22ClNO5 |
| Molecular Weight | 463.91 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Fmoc-Asp(OBzl)-Cl is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Fmoc-Asp(OBzl)-Cl (CAS 148827-71-8), molecular formula C26H22ClNO5 and molecular weight 463.91 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Fmoc-Asp(OBzl)-Cl (C26H22ClNO5) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 463.91 g/mol, it falls into the moderately-high-molecular-weight range. 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 | C26H22ClNO5 |
| Molecular Weight | 463.91 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1999 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Fmoc Standards
- Fmoc-Cys(Mob)-OH (CAS 141892-41-3)
- Fmoc-D-Cys(Mob)-OH (CAS 200354-43-4)
- Fmoc-D-3,3-diphenylalanine (CAS 189937-46-0)
- Fmoc-4-phenyl-D-Phe-OH (CAS 205526-38-1)
- Fmoc-4-phenyl-Phe-OH (CAS 199110-64-0)
- Fmoc-β,β-diphenyl-Ala-OH (CAS 201484-50-6)
- Fmoc-2,4-dinitro-DL-phenylglycine (CAS 1219389-84-0)
- N-Fmoc-N’-trifluoroacetyl-L-lysine (CAS 76265-69-5)
Recommended Standards
- Canagliflozin Impurity 91 (CAS CATO-C4X-112391)
- 3-((3-Chlorobenzyl)thio)-4-ethyl-5-(1-phenyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)-4H-1,2,4-triazole (CAS 957014-52-7)
- Ethyl 4-[4-(4-chlorophenyl)piperazin-1-yl]-6-(trifluoromethyl)quinoline-3-carboxylate (CAS 338748-33-7)
- 3-((4-Chlorobenzyl)thio)-4-ethyl-5-(1-phenyl-5-(trifluoromethyl)-1H-pyrazol-4-yl)-4H-1,2,4-triazole (CAS 956742-12-4)
- N-(2-chlorobenzyl)-1',4'-dihydro-3'H-spiro[piperidine-4,2'-quinoxalin]-3'-imine (CAS 951542-68-0)
- rel-tert-Butyl (3R,4R)-3-bromo-4-fluoropyrrolidine-1-carboxylate (CAS 1818847-67-4)
- 4-Cyclopropylisoxazole-3-carboxylic acid (CAS 1781638-72-9)
- 3-(2-Oxo-1,3-oxazolidin-3-yl)-3-phenylpropanoic acid (CAS 150812-64-9)
- 2-[(2,6-dimethylmorpholin-4-yl)methyl]aniline (CAS 1016683-80-9)
- 4-Fluoro-3-(2-thienyl)benzaldehyde (CAS 552845-68-8)
- 4-(3-Chlorophenyl)-6-methyl-2-(methylthio)pyrimidin-5-amine (CAS 404569-96-6)
- 5-Amino-2-bromobenzamide hydrochloride (CAS 1211398-47-8)
- 4-Formyl-2-iodo-6-methoxyphenyl acetate (CAS 486994-14-3)
- Semaglutide impurity 251 (CAS CATO-C4X-2226251)
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