4-(4-Chlorobenzoyl)-N'-phenyl-1H-pyrrole-2-carbohydrazide CAS 338403-36-4
| CAS No. | 338403-36-4 |
| Molecular Formula | C18H14ClN3O2 |
| Molecular Weight | 339.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
4-(4-Chlorobenzoyl)-N'-phenyl-1H-pyrrole-2-carbohydrazide (CAS 338403-36-4) is a high-purity analytical reference standard with the molecular formula C18H14ClN3O2 and a molecular weight of 339.78 g/mol.
Structurally, 4-(4-Chlorobenzoyl)-N'-phenyl-1H-pyrrole-2-carbohydrazide (C18H14ClN3O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 13.0, corresponding to approximately 13 ring(s) or double-bond equivalent(s). With a molecular weight of 339.78 g/mol, it falls into the moderately-high-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C18H14ClN3O2 |
| Molecular Weight | 339.78 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorobenzoyl Standards
- N'-(3-chlorobenzoyl)-2-(1H-pyrrol-1-yl)benzohydrazide (CAS 478062-93-0)
- N'-(4-chlorobenzoyl)-2-(1H-pyrrol-1-yl)benzohydrazide (CAS 478063-00-2)
- 2-(4-(2-Chlorobenzoyl)-1-methyl-5-(methylthio)-2-oxo-2,5-dihydro-1H-pyrrol-3-yl)acetic acid (CAS 1269534-86-2)
- N-{[2-(2-Chlorobenzoyl)hydrazino]carbothioyl}-2-thiophenecarboxamide (CAS 649547-08-0)
- 1-(4-Chlorobenzoyl)-3-(4-methoxyphenyl)-1H-pyrazole-4-carbaldehyde (CAS 260789-24-0)
- N-(4-(4-Chlorobenzoyl)phenyl)-5-methylisoxazole-4-carboxamide (CAS 73076-36-5)
- 4-(3-Chlorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326808-39-2)
- 4-(2-Chlorobenzoyl)-8-methyl-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326810-13-2)
Recommended Standards
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