5-Oxotetrahydropyrrolo[2,1-b]thiazole-7a(5H)-carboxylic acid CAS 155796-08-0
| CAS No. | 155796-08-0 |
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 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-Oxotetrahydropyrrolo[2,1-b]thiazole-7a(5H)-carboxylic acid.
5-Oxotetrahydropyrrolo[2,1-b]thiazole-7a(5H)-carboxylic acid (CAS 155796-08-0) is a high-purity analytical reference standard with the molecular formula C7H9NO3S and a molecular weight of 187.22 g/mol.
5-Oxotetrahydropyrrolo[2,1-b]thiazole-7a(5H)-carboxylic acid (C7H9NO3S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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).
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-Oxotetrahydropyrrolo[2,1-b]thiazole-7a(5H)-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.
Physical & Chemical Properties
| Molecular Formula | C7H9NO3S |
| Molecular Weight | 187.22 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-Ethoxy-2-methylthiazole-5-carboxylic acid (CAS 1547490-40-3)
- N-(3-aminopyridin-2-yl)methanesulfonamide (CAS 1564916-50-2)
- (2-(Methylsulfonyl)pyrimidin-4-yl)methanamine (CAS 1545620-45-8)
- methyl 2-(hydroxymethyl)-4-methyl-1,3-thiazole-5-carboxylate (CAS 1565712-91-5)
- 2-Chloro-N-(2-(((5-oxo-2,3-dihydro-5H-thiazolo[2,3-b]quinazolin-3-yl)methyl)thio)phenyl)benzamide (CAS 477868-83-0)
- Asiatic acid (CAS 464-92-6)
- 1-[4-Chloro-3-(trifluoromethyl)phenyl]-5-ethyl-1H-1,2,3-triazole-4-carboxylic acid (CAS 1096912-00-3)
- Furosemide Impurity 46 (CAS CATO-C4X-140246)
- cis-5-Ethoxycarbonyl-1H-hexahydropyrrolo[3,4-b]pyrrole Hydrochloride (CAS 1363166-35-1)
- (11bS)-2,6-Di([1,1':3',1''-terphenyl]-5'-yl)-4-hydroxy-8,9,10,11,12,13,14,15-octahydrodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepine 4-oxide (CAS 1496637-09-2)
- 4-Chloro-2-methyl-1H-indene (CAS 210628-07-2)
- 5-Aminothiophene-2-sulfonamide (CAS 17510-79-1)
- 3-(Trifluoromethyl)isoxazole (CAS 32990-29-7)
- Semaglutide impurity 269 (CAS CATO-C4X-2226269)
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