Fmoc-Arg(Me)2-OH (asymmetrical) CAS 268564-10-9
| CAS No. | 268564-10-9 |
| Molecular Formula | C23H28N4O4 |
| Molecular Weight | 424.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Fmoc-Arg(Me)2-OH (asymmetrical) (CAS 268564-10-9), molecular formula C23H28N4O4 and molecular weight 424.49 g/mol, is a CATO reference standard with documented purity and traceability.
Fmoc-Arg(Me)2-OH (asymmetrical) (C23H28N4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Fmoc-Arg(Me)2-OH (asymmetrical) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C23H28N4O4 |
| Molecular Weight | 424.49 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Related Fmoc Standards
- Fmoc-(S)-2-Amino-5-morpholinopentanoic acid (CAS 2350138-22-4)
- Fmoc-Arg(Me)2-OH (symmetrical) (CAS 823780-66-1)
- Fmoc-β-Ala-Leu-OH (CAS 848691-83-8)
- Fmoc-β-Ala-Ile-OH (CAS 2171270-66-7)
- FMOC-Ala-Leu-OH (CAS 177609-08-4)
- Fmoc-D-Dab(Aloc)-OH (CAS 387824-78-4)
- Fmoc-Gly-D-Ser(psi(Me,Me)-Pro)-OH (CAS 1998701-38-4)
- Fmoc-Dab(Aloc)-OH (CAS 204316-32-5)
Recommended Standards
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- (-)-Kurarinone (CAS 34981-26-5)
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- tert-Butyl((3-methoxy-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)naphthalen-1-yl)oxy)dimethylsilane (CAS 2158298-42-9)
- 4-Methyloctahydro-1H-pyrido[1,2-a]pyrazine (CAS 805986-39-4)
- (E)-3-((3,5-Dimethyl-1H-pyrrol-2-yl)methylene)indolin-2-one (CAS 194413-57-5)
- (R)-2-Chloro-1-(3-((6-(cyclopropylamino)pyrimidin-4-yl)oxy)pyrrolidin-1-yl)ethanone (CAS 1417789-60-6)
- [{2-[4-(4-Fluorophenyl)piperazin-1-yl]-2-oxoethyl}(4-methoxyphenyl)amino]acetic acid (CAS 1142205-38-6)
- Voriconazole Impurity 60 (CAS 116622-90-3)
- 1-(4-(4-Aminophenyl)piperazin-1-yl)-2,2-dimethylpropan-1-one (CAS 325168-03-4)
- 1,2-Piperazinedicarboxylic acid, 1-(1,1-dimethylethyl) 2-ethyl ester (CAS 188567-82-0)
- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com