5-(Methoxymethyl)-4-{[(2-thienylmethyl)amino]methylene}-2,4-dihydro-3H-pyrazol-3-one CAS 240799-69-3
| CAS No. | 240799-69-3 |
| Molecular Formula | C11H13N3O2S |
| Molecular Weight | 251.30 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-(Methoxymethyl)-4-{[(2-thienylmethyl)amino]methylene}-2,4-dihydro-3H-pyrazol-3-one.
CATO supplies 5-(Methoxymethyl)-4-{[(2-thienylmethyl)amino]methylene}-2,4-dihydro-3H-pyrazol-3-one (CAS 240799-69-3), a certified reference material (molecular formula C11H13N3O2S, MW 251.30 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 5-(Methoxymethyl)-4-{[(2-thienylmethyl)amino]methylene}-2,4-dihydro-3H-pyrazol-3-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 251.30 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 5-(Methoxymethyl)-4-{[(2-thienylmethyl)amino]methylene}-2,4-dihydro-3H-pyrazol-3-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C11H13N3O2S |
| Molecular Weight | 251.30 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 5-(Furan-2-yl)-4-((tetrahydrofuran-2-yl)methyl)-4H-1,2,4-triazole-3-thiol (CAS 777879-30-8)
- 5-[(Ethanesulfonyl)methyl]-3-phenyl-1,2-oxazole (CAS 338962-45-1)
- 5-(Dimethylamino)naphthalene-1-sulfonic acid (CAS 4272-77-9)
- 6-(Dimethylamino)naphthalene-2-sulfonic acid (CAS 34322-51-5)
- Ethyl 3-bromo-4-((4-chlorobenzyl)oxy)benzoate (CAS 1706453-38-4)
- 12-Carboxylated Natamycin Lactone (CAS CATO-C4X-20403)
- [2-(4-ethoxyphenyl)-1,3-thiazol-4-yl]methanol (CAS 147046-36-4)
- 2-Methoxy-4-(2-pyrrolidinyl)-phenol (CAS 7167-79-5)
- Bedaquiline Impurity 54 (CAS CATO-C4X-116754)
- 3-Fluoro-4-iodo-1H-pyrrolo[2,3-b]pyridine (CAS 1352394-59-2)
- 5-(Naphthalen-1-yl)-1H-1,2,4-triazole-3(2H)-thione (CAS 7271-54-7)
- 4,6-Dichloro-8-methoxyquinoline (CAS 1189106-28-2)
- 2-Amino-3-methyl-N-((R)-1-phenylethyl)pentanamide (CAS 1354204-43-5)
- Semaglutide Impurity 82 (CAS CATO-C4X-222682)
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