5-Oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acid 1-oxide CAS 1214666-23-5
| CAS No. | 1214666-23-5 |
| Molecular Formula | C11H9NO4S |
| Molecular Weight | 251.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acid 1-oxide.
5-Oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acid 1-oxide (CAS 1214666-23-5), molecular formula C11H9NO4S and molecular weight 251.26 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acid 1-oxide (C11H9NO4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone 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 5-Oxo-2,3,5,9b-tetrahydrothiazolo[2,3-a]isoindole-3-carboxylic acid 1-oxide 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 | C11H9NO4S |
| Molecular Weight | 251.26 g/mol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
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