1-(Ethylsulfonyl)-1H-pyrazol-4-amine CAS 1935538-93-4
| CAS No. | 1935538-93-4 |
| Molecular Formula | C5H9N3O2S |
| Molecular Weight | 175.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 175.21 g/mol gives 1-(Ethylsulfonyl)-1H-pyrazol-4-amine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1-(Ethylsulfonyl)-1H-pyrazol-4-amine (CAS 1935538-93-4), molecular formula C5H9N3O2S and molecular weight 175.21 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-(Ethylsulfonyl)-1H-pyrazol-4-amine (C5H9N3O2S) is characterized by an amide group, a sulfone group, a carboxylic acid 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. 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.
CATO manufactures 1-(Ethylsulfonyl)-1H-pyrazol-4-amine 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 | C5H9N3O2S |
| Molecular Weight | 175.21 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ethylsulfonyl Standards
- 4-(Ethylsulfonyl)-1H-pyrazol-5-amine (CAS 1421601-47-9)
- 5-(Ethylsulfonyl)-1H-1,2,4-triazol-3-amine (CAS 346631-09-2)
- 3-(Ethylsulfonyl)-1,2,4-oxadiazol-5-amine (CAS 1263212-32-3)
- 3-(Ethylsulfonyl)-2-methyl-1H-pyrrole (CAS 1707379-54-1)
- (1-(Ethylsulfonyl)azetidin-3-yl)methanamine (CAS 1462999-01-4)
- 1-(Ethylsulfonyl)piperazine (CAS 62937-96-6)
- 4-(Ethylsulfonyl)butanoic acid (CAS 99116-13-9)
- Ethyl 2-(ethylsulfonyl)acetate (CAS 29771-85-5)
Recommended Standards
- rel-(3aR,6aS)-Tetrahydro-1H-thieno[3,4-b]pyrrol-2(3H)-one 5,5-dioxide (CAS 1903872-85-4)
- 2H-Thiazolo[4,5-g]indazole (CAS 19546-90-8)
- (1-Cyanocyclopropyl)methyl methanesulfonate (CAS 186387-76-8)
- 2H-Thiazolo[5,4-e]indazole (CAS 19546-91-9)
- 1-(3-Bromophenyl)pentan-2-one (CAS 1179269-06-7)
- Ethyl 2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylate (CAS 4815-29-6)
- 3-(5,6-Dihydro-10-methoxy-2-methyl-4-oxo-2,6-methano-2H-1,3,5-benzoxadiazocin-3(4H)-yl)benzoic acid (CAS 899213-33-3)
- Arjunglucoside I (CAS 62319-70-4)
- Rel-(2R,3R)-2-benzhydryl-N-(2-iodobenzyl)quinuclidin-3-amine (CAS 144425-84-3)
- 7H-Purin-2-ol (CAS 51953-15-2)
- (R)-2-(2,6-Difluorophenyl)pyrrolidine (CAS 1241679-29-7)
- 9H-Purine-9-methanol, 6-(propylthio)-, 9-(N-methylcarbamate) (CAS 52185-94-1)
- 2-Amino-N-(4-fluorophenyl)benzamide (CAS 216502-06-6)
- Sperm Activating Peptide, Sea Urchin (CAS 140653-27-6)
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