Fmoc-D-Cys(Bzl)-OH CAS 252049-18-6
| CAS No. | 252049-18-6 |
| Molecular Formula | C25H23NO4S |
| Molecular Weight | 433.53 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Fmoc-D-Cys(Bzl)-OH (CAS 252049-18-6), molecular formula C25H23NO4S and molecular weight 433.53 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Fmoc-D-Cys(Bzl)-OH (C25H23NO4S) is characterized by a flavonoid core, an amide group, a sulfone 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), Fmoc-D-Cys(Bzl)-OH meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C25H23NO4S |
| Molecular Weight | 433.53 g/mol |
| Purity | >95% |
| 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 |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
- N-(1-Cyano-1-cyclopropylethyl)-2-((5-(2-methoxyphenyl)-4-phenyl-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 854138-77-5)
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- 6-[(4-Ethyl-5-{[(4-methylphenyl)methyl]sulfanyl}-4H-1,2,4-triazol-3-yl)methoxy]-2-phenyl-2,3-dihydropyridazin-3-one (CAS 692737-13-6)
- (S)-tert-Butyl 4-(2-(((benzyloxy)carbonyl)amino)-3-methylbutanamido)piperidine-1-carboxylate (CAS 1417789-33-3)
- 5-(Chloromethyl)-2,2,5-trimethylheptane (CAS 1466646-70-7)
- 5-hydroxy-1,3-dihydrobenzimidazol-2-one (CAS 39513-24-1)
- (R)-2-(1,3-dioxoisoindolin-2-yl)-3-methylbutanoic acid (CAS 6306-53-2)
- (2S,4R)-1-[(tert-butoxy)carbonyl]-4-sulfanylpyrrolidine-2-carboxylic acid (CAS 958879-77-1)
- 25338-55-0 ((Dimethylamino)methyl)phenol Phenol, ((dimethylamino)methyl)- EINECS 246-866-5 alpha-(Dimethylamino)-cresol Dimethylaminomethylphenol (CAS 25338-55-0)
- n-(3,4-Dichlorobenzyl)-1-methoxypropan-2-amine (CAS 1019628-31-9)
- 4-Amino-N-hydroxy-3-oxoisoxazolidine-5-carboxamide (CAS 66619-96-3)
- Methyl 2-amino-5,5-dimethylhexanoate (CAS 142886-14-4)
- MK-2206 hydrochloride, >98% (HPLC) (CAS 1032349-77-1)
- [D-Ser8]-Semaglutide A (CAS CATO-C4X-2226116)
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