(S)-2-((S)-2-((S)-2-Amino-4-methylpentanamido)-3-(1H-imidazol-4-yl)propanamido)-4-methylpentanoic acid CAS 126828-33-9
| CAS No. | 126828-33-9 |
| Molecular Formula | C18H31N5O4 |
| Molecular Weight | 381.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (S)-2-((S)-2-((S)-2-Amino-4-methylpentanamido)-3-(1H-imidazol-4-yl)propanamido)-4-methylpentanoic acid is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(S)-2-((S)-2-((S)-2-Amino-4-methylpentanamido)-3-(1H-imidazol-4-yl)propanamido)-4-methylpentanoic acid (CAS 126828-33-9), molecular formula C18H31N5O4 and molecular weight 381.47 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (S)-2-((S)-2-((S)-2-Amino-4-methylpentanamido)-3-(1H-imidazol-4-yl)propanamido)-4-methylpentanoic acid (C18H31N5O4) is characterized by a steroid core, an amide 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures (S)-2-((S)-2-((S)-2-Amino-4-methylpentanamido)-3-(1H-imidazol-4-yl)propanamido)-4-methylpentanoic acid 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 | C18H31N5O4 |
| Molecular Weight | 381.47 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
| Nitrogen Atoms | 5 |
Recommended Standards
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Why CATO?
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