tert-Butyl (S)-4-(Cbz-amino)-5-methyl-3-oxohexanoate CAS 191731-16-5
| CAS No. | 191731-16-5 |
| Molecular Formula | C19H27NO5 |
| Molecular Weight | 349.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of tert-Butyl (S)-4-(Cbz-amino)-5-methyl-3-oxohexanoate 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.
tert-Butyl (S)-4-(Cbz-amino)-5-methyl-3-oxohexanoate (CAS 191731-16-5), molecular formula C19H27NO5 and molecular weight 349.42 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H27NO5, tert-Butyl (S)-4-(Cbz-amino)-5-methyl-3-oxohexanoate contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 349.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C19H27NO5 |
| Molecular Weight | 349.42 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2011 |
| Nitrogen Atoms | 1 |
Recommended Standards
- Allyl O-benzyl-N-(tert-butoxycarbonyl)-L-threoninate (CAS 186504-25-6)
- 1-Benzyl 4-(tert-butyl) (S)-2-(aminomethyl)piperazine-1,4-dicarboxylate (CAS 1932167-34-4)
- tert-Butyl 4-(((benzyloxy)carbonyl)amino)-5-methyl-3-oxohexanoate (CAS 1822810-13-8)
- (3'-Oxo-1-azabicyclo[2.2.2]oct-2'-ylidene)bis(methylene)-cyclobutane carboxylate (CAS 865293-05-6)
- 4-Amino-N-(4-methoxyphenyl)benzene-1-sulfonamide (CAS 19837-74-2)
- Methyl2-[3-(methoxymethyl)-5-oxo-2-pyrrolidinyl]acetate (CAS 303010-19-7)
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- 2-fluoro-2-methylcyclopentan-1-amine (CAS 1400689-42-0)
- Hexapeptide-1 (CAS CATO-CPTD788821)
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