3-Chloro-1-(4-methoxyphenyl)-4-(m-tolylamino)-1H-pyrrole-2,5-dione CAS 61892-19-1
| CAS No. | 61892-19-1 |
| Molecular Formula | C18H15ClN2O3 |
| Molecular Weight | 342.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Chloro-1-(4-methoxyphenyl)-4-(m-tolylamino)-1H-pyrrole-2,5-dione (CAS 61892-19-1), molecular formula C18H15ClN2O3 and molecular weight 342.78 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Chloro-1-(4-methoxyphenyl)-4-(m-tolylamino)-1H-pyrrole-2,5-dione (C18H15ClN2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 342.78 g/mol, it falls into the moderately-high-molecular-weight range. 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.
As a certified reference material (CRM), 3-Chloro-1-(4-methoxyphenyl)-4-(m-tolylamino)-1H-pyrrole-2,5-dione 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 | C18H15ClN2O3 |
| Molecular Weight | 342.78 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 2-(3-Chlorophenyl)-2-methyloxirane (CAS 1427715-40-9)
- ω-Muricholic Acid (CAS 6830-03-1)
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- Methyl Salicylate EP Impurity L (CAS 33528-09-5)
- 5-Chloro-3,4-dimethylpyridin-2-amine (CAS 2169497-18-9)
- 2-(Difluoromethyl)-5-methylthiophene (CAS 153026-79-0)
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