Fmoc-D-Arg(Tos)-OH CAS 139090-50-9
| CAS No. | 139090-50-9 |
| Molecular Formula | C28H30N4O6S |
| Molecular Weight | 550.63 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-D-Arg(Tos)-OH (CAS 139090-50-9), molecular formula C28H30N4O6S and molecular weight 550.63 g/mol, is a CATO reference standard with documented purity and traceability.
Fmoc-D-Arg(Tos)-OH (C28H30N4O6S) contains a steroid core, an amide group, a sulfone 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C28H30N4O6S |
| Molecular Weight | 550.63 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Fmoc Standards
- Fmoc-Arg(Tos)-OH (CAS 83792-47-6)
- Fmoc-N-Me-Lys(2-Cl-Z)-OH (CAS 95310-75-1)
- Fmoc-Ile-Aib-Leu-OH (CAS CATO-CPTD788895)
- Fmoc-D-Ser(tBu)-OPfp (CAS 244633-35-0)
- Fmoc-Ser(tBu)-OPfp (CAS 105751-13-1)
- Fmoc-Asp(OtBu)-Thr(Psi(Me,Me)pro)-OH (CAS 920519-32-0)
- Fmoc-Glu(OtBu)-Ser(Psi(Me,Me)pro)-OH (CAS 909115-33-9)
- Fmoc-D-Arg-D-Arg-OH (CAS CATO-CPTD788734)
Recommended Standards
- 1-(6-((6-(4-Fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)thio)benzo[d]thiazol-2-yl)-3-(2-morpholinoethyl)urea (CAS 1116743-46-4)
- 1799974-70-1 KI696 (CAS 1799974-70-1)
- Imatinib Impurity 90 (CAS CATO-C4X-106890)
- (11aR)-3,7-Bis(2,4,6-trimethylphenyl)-10,11,12,13-tetrahydro-5-hydroxy-5-oxide-diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin (CAS 1801196-27-9)
- 6-Bromo-N-(pyridin-4-ylmethyl)imidazo[1,2-a]pyridin-8-amine (CAS 676370-49-3)
- 3-(Ethylsulfonyl)-4-methylbenzenesulfonamide (CAS 1354954-59-8)
- 3-Ethoxy-2-(2-methoxyethyl)-2H-indazole-6-carboxylic acid (CAS 919106-94-8)
- N-(3-aminopropyl)-3-methoxybenzamide (CAS 1016846-35-7)
- 4-amino-7H-pyrrolo[2,3-d]pyrimidine-5-carboxylic acid (CAS 1488-48-8)
- 1-((4-Hydrazinylpyridin-3-yl)sulfonyl)azepane (CAS 1339028-55-5)
- (R)-N-(2-Phenylpropyl)propane-2-sulfonamide (CAS 375345-97-4)
- N-(4-(5-Bromothiophen-2-yl)thiazol-2-yl)-1-naphthamide (CAS 476211-62-8)
- Tert-pentyl oxazole-4-carboxylate (CAS 86838-74-6)
- Tirzepatide Impurity 50 (CAS CATO-C4X-324050)
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