Ac-D-Cys(H-Cys-OH)-D-Ala-Arg-D-Arg-D-Arg-D-Ala-D-Arg-NH2 CAS CATO-C4X-32479
| CAS No. | CATO-C4X-32479 |
| Molecular Formula | C38H73N21O10S2 |
| Molecular Weight | 1048.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Ac-D-Cys(H-Cys-OH)-D-Ala-Arg-D-Arg-D-Arg-D-Ala-D-Arg-NH2 (CAS CATO-C4X-32479) is a high-purity analytical reference standard with the molecular formula C38H73N21O10S2 and a molecular weight of 1048.25 g/mol.
The molecular framework of Ac-D-Cys(H-Cys-OH)-D-Ala-Arg-D-Arg-D-Arg-D-Ala-D-Arg-NH2 (C38H73N21O10S2) is characterized by a nitrogen-containing heterocyclic scaffold, 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.
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.
Physical & Chemical Properties
| Molecular Formula | C38H73N21O10S2 |
| Molecular Weight | 1048.25 g/mol |
| 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 21 |
| Sulfur Atoms | 2 |
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