(S)-2-((S)-2-Cyclohexyl-2-(pyrazine-2-carboxamido)acetamido)-3,3-dimethylbutanoic acid CAS 402958-96-7
| CAS No. | 402958-96-7 |
| Molecular Formula | C19H28N4O4 |
| Molecular Weight | 376.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (S)-2-((S)-2-Cyclohexyl-2-(pyrazine-2-carboxamido)acetamido)-3,3-dimethylbutanoic acid is closely related to a flavonoid 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-Cyclohexyl-2-(pyrazine-2-carboxamido)acetamido)-3,3-dimethylbutanoic acid (CAS 402958-96-7), molecular formula C19H28N4O4 and molecular weight 376.45 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, (S)-2-((S)-2-Cyclohexyl-2-(pyrazine-2-carboxamido)acetamido)-3,3-dimethylbutanoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 376.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
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 | C19H28N4O4 |
| Molecular Weight | 376.45 g/mol |
| Appearance | Pale yellow to 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 4 |
Recommended Standards
- (S)-2-((S)-1-((Benzyloxy)carbonyl)pyrrolidine-2-carboxamido)-2,4-dimethylpentanoic acid (CAS 90104-15-7)
- (S)-Benzyl 2-(((S)-1-methoxy-4-methyl-1-oxopentan-2-yl)carbamoyl)pyrrolidine-1-carboxylate (CAS 2873-37-2)
- (R)-N-((R)-1-(((R)-1-Amino-3-methyl-1-oxobutan-2-yl)amino)-3-(4-hydroxyphenyl)-1-oxopropan-2-yl)pyrrolidine-2-carboxamide (CAS 628282-06-4)
- 1-(5-(5-(Ethoxycarbonyl)-1-ethyl-3-methyl-1H-pyrazol-4-yl)pentyl)-3-methyl-1H-pyrazole-5-carboxylic acid (CAS 2138301-76-3)
- 3-(Difluoromethyl)-[1,2,4]triazolo[4,3-a]pyridine-6-carbonitrile (CAS 1597952-88-9)
- N-(3-formyl-4-methylpyridin-2-yl)-2,2-dimethylpropanamide (CAS 216678-81-8)
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- Ruxolitinib Impurity 135 (CAS CATO-C4X-2058135)
- Pentanedioic-d6 Anhydride (CAS 1219794-53-2)
- 3-(Methylsulfonyl)-4-morpholinobenzaldehyde (CAS 1197193-23-9)
- 2-Propenoic acid, 2-methyl-, methyl ester, polymer with ethenylbenzene and 2-propenenitrile (CAS 25213-88-1)
- [6-(2,2,2-Trifluoroethoxy)pyrimidin-4-yl]methanamine hydrochloride (CAS 1439899-29-2)
- 2-Fluoro-4-methoxy-3-(trifluoromethyl)pyridine (CAS 1227564-64-8)
- semaglutide (CAS 782487-28-9)
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