Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate CAS 392672-02-5
| CAS No. | 392672-02-5 |
| Molecular Formula | C6H9N3O2S |
| Molecular Weight | 187.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate 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.
Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate (CAS 392672-02-5) is a high-purity analytical reference standard with the molecular formula C6H9N3O2S and a molecular weight of 187.22 g/mol.
Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate (C6H9N3O2S) 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. 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.
Physical & Chemical Properties
| Molecular Formula | C6H9N3O2S |
| 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 DMSO, DMF, methanol |
| 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.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Methyl 5-amino-3-(methylthio)-1H-pyrazole-4-carboxylate (CAS 117717-02-9)
- 2-Amino-n-methylpyridine-3-sulfonamide (CAS 1250972-58-7)
- 2-Amino-3-(methylsulfonyl)phenol (CAS 129318-50-9)
- 3-Amino-2,4,6,7-tetrahydrothiopyrano[4,3-c]pyrazole 5,5-dioxide (CAS 1306604-52-3)
- 4-Amino-2-methylbenzenesulfonic acid (CAS 133-78-8)
- 2-Amino-3-(2-thioxo-2,3-dihydro-1H-imidazol-4-yl)propanoic acid (CAS 13552-61-9)
- 3-Amino-5-methylpyridine-2-sulfonamide (CAS 163137-50-6)
- Ethyl 2-amino-4-hydroxythiophene-3-carboxylate (CAS 16694-23-8)
Recommended Standards
- Ethyl 5-(hydroxymethyl)thiazole-2-carboxylate (CAS 960235-23-8)
- Methyl 2-(1-hydroxyethyl)thiazole-4-carboxylate (CAS 76275-86-0)
- Ethyl 4-Hydroxy-2-methylthiazole-5-carboxylate (CAS 20737-48-8)
- Methyl 2-amino-4-(hydroxymethyl)thiophene-3-carboxylate (CAS 349662-62-0)
- 1-(3,4-Difluorobenzyl)-1H-pyrrole-2-carbaldehyde (CAS 1250679-87-8)
- N-(Pyrimidin-2-yl)acetamide (CAS 13053-88-8)
- 6-Methoxy-7-(2-methoxyethoxy)quinolin-4(1H)-one (CAS 127285-96-5)
- 3-(2-Methoxyphenyl)-N-(2-(thiophen-2-yl)ethyl)-1H-pyrazole-5-carboxamide (CAS 1240312-09-7)
- 5-Chloropicolinohydrazide (CAS 145835-01-4)
- 4-Chloro-2-methoxy-3-methylaniline (CAS 6358-81-2)
- N-[(2S)-1,1,1-trifluorobutan-2-yl]thietan-3-amine (CAS 1867146-30-2)
- (2,6-Difluoro-3-iodophenyl)methanol (CAS 1407118-01-7)
- 2-Oxo-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-5-carbaldehyde (CAS 189563-98-2)
- Des-[Ser]8-Liraglutide (CAS CATO-C4X-199233)
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