(2R,3S)-3-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-2-methylbutanoic acid CAS 266318-76-7
| CAS No. | 266318-76-7 |
| Molecular Formula | C20H21NO4 |
| Molecular Weight | 339.39 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.
(2R,3S)-3-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-2-methylbutanoic acid (CAS 266318-76-7), molecular formula C20H21NO4 and molecular weight 339.39 g/mol, is a CATO reference standard with documented purity and traceability.
(2R,3S)-3-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-2-methylbutanoic acid (C20H21NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO manufactures (2R,3S)-3-[[(9H-Fluoren-9-ylmethoxy)carbonyl]amino]-2-methylbutanoic 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 | C20H21NO4 |
| Molecular Weight | 339.39 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Recommended Standards
- (2E)-N,N-Diethyl-2-(phenylformamido)-3-[(pyrimidin-2-yl)amino]prop-2-enamide (CAS 339010-32-1)
- (3Z)-4-[(4-Acetylphenyl)amino]-3-(3,4-dimethoxyphenyl)but-3-en-2-one (CAS 339017-47-9)
- 5-(Tert-butyl) 3-ethyl 1-(2-hydroxyethyl)-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-3,5-dicarboxylate (CAS 1884456-65-8)
- (9H-Fluoren-9-yl)methyl (3-ethynylphenyl)carbamate (CAS 587878-72-6)
- 18167-40-3 2-Propoxybenzohydrazide 6096AD C10H14N2O2 (CAS 18167-40-3)
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