rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid CAS 66428-09-9
| CAS No. | 66428-09-9 |
| Molecular Formula | C8H9NO5 |
| Molecular Weight | 199.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic 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.
rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (CAS 66428-09-9), molecular formula C8H9NO5 and molecular weight 199.16 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of rel-(2S,5S,Z)-3-(2-Hydroxyethylidene)-7-oxo-4-oxa-1-azabicyclo[3.2.0]heptane-2-carboxylic acid (C8H9NO5) is characterized by an amino-acid-derived structure, 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H9NO5 |
| Molecular Weight | 199.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
Recommended Standards
- Methyl 3-(4-nitro-1h-pyrazol-1-yl)propanoate (CAS 494747-22-7)
- Nifuratel Impurity 14 (CAS 25294-71-7)
- methyl 1,3-dimethyl-4-nitro-1H-pyrazole-5-carboxylate (CAS 78208-69-2)
- Ornidazole Impurity 109 (CAS CATO-C4X-1331109)
- 56658-04-9 2-Bromo-5-methoxybenzene-1-carbonyl chloride MFCD00219937 2-bromo-5-methoxybenzoyl chloride (CAS 56658-04-9)
- 2-(4-Fluorophenyl)isoindoline-1,3-dione (CAS 569-81-3)
- 2-[4-(Pyridin-2-ylmethoxy)phenyl]ethylamine (CAS 663597-30-6)
- 20705-59-3 4-((tetrahydro-2H-pyran-2-yl)oxy)butan-2-one (CAS 20705-59-3)
- tert-Butyl ((4-hydroxy-6-phenylpyrimidin-2-yl)methyl)carbamate (CAS 1240595-45-2)
- 5-Phenyl-4-(p-tolyl)thiazol-2-amine (CAS 75745-30-1)
- Acetylsulfamoyl chloride (CAS 50881-23-7)
- (R)-4-bromo-2-((tert-butoxycarbonyl)amino)pent-4-enoic acid (CAS 149930-92-7)
- (R)-1-amino-2,3-dihydro-1H-indene-4-carbonitrile (CAS 1213203-23-6)
- Insulin Degludec Impurity 10 (CAS CATO-C4X-215710)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com