2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate CAS 306935-68-2
| CAS No. | 306935-68-2 |
| Molecular Formula | C18H12ClN3S |
| Molecular Weight | 337.83 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 337.83 g/mol gives 2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate (CAS 306935-68-2), a certified reference material (molecular formula C18H12ClN3S, MW 337.83 g/mol) for analytical method development and quality control.
2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate (C18H12ClN3S) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; 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.
CATO manufactures 2,5-Dichloro-4-(5-hydroxy-3-methyl-1H-pyrazol-1-yl)benzenesulfonic acid dihydrate 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 | C18H12ClN3S |
| Molecular Weight | 337.83 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Dichloro Standards
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- 7-Cbz-2,4-dichloro-5,6,7,8-tetrahydropyrido[3,4-d]pyrimidine (CAS 1370411-44-1)
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- 2,4-Dichloro-N-(4-oxo-3,4,5,6,7,8-hexahydroquinazolin-2-yl)benzamide (CAS 338416-10-7)
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Recommended Standards
- 2-(Benzylsulfanyl)-4-chloro-6-phenylpyrimidine-5-carbonitrile (CAS 303985-04-8)
- 2-{6-[(4-chlorophenyl)sulfanyl]pyridazin-3-yl}-2-phenylacetonitrile (CAS 339026-43-6)
- 2-(4-Chlorophenyl)-2-(6-(phenylthio)pyridazin-3-yl)acetonitrile (CAS 303997-39-9)
- 3-{[(4-chlorophenyl)methyl]sulfanyl}-6-phenylpyridazine-4-carbonitrile (CAS 338417-86-0)
- 4-Thien-2-ylbenzoyl chloride (CAS 181132-70-7)
- ((2S,5R)-5-(2,4-Dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl dihydrogen phosphate (CAS 117605-34-2)
- (2-Hydroxyphenyl)(imino)(methyl)-l6-sulfanone (CAS 1823096-97-4)
- 3-(3-Fluoro-5-nitrophenyl)pyridine (CAS 1211529-72-4)
- Sargaquinoic acid (CAS 70363-87-0)
- N-(4-Chloro-5-cyano-7H-pyrrolo[2,3-d]pyrimidin-2-yl)pivalamide (CAS 1000981-99-6)
- 6,7-Dimethoxy-1-((6-nitrobenzo[d][1,3]dioxol-5-yl)methyl)-3,4-dihydroisoquinoline (CAS 42971-18-6)
- BL 1249 (CAS 18200-13-0)
- Chlormidazole HCl (CAS 74298-63-8)
- Q-Peptide trifluoroacetate salt (CAS 1361235-89-3)
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