1-(3,5-Dichlorophenyl)-2-(4-methanesulfonylphenyl)-5-methyl-1H-pyrrole CAS 338749-74-9
| CAS No. | 338749-74-9 |
| Molecular Formula | C18H15Cl2NO2S |
| Molecular Weight | 380.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(3,5-Dichlorophenyl)-2-(4-methanesulfonylphenyl)-5-methyl-1H-pyrrole (CAS 338749-74-9), molecular formula C18H15Cl2NO2S and molecular weight 380.29 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(3,5-Dichlorophenyl)-2-(4-methanesulfonylphenyl)-5-methyl-1H-pyrrole (C18H15Cl2NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 380.29 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 1-(3,5-Dichlorophenyl)-2-(4-methanesulfonylphenyl)-5-methyl-1H-pyrrole 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 | C18H15Cl2NO2S |
| Molecular Weight | 380.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Dichlorophenyl Standards
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Recommended Standards
- 2-([1,2'-Binaphthalen]-6'-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 1822374-49-1)
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- 4,4,5,5-Tetramethyl-2-(3-(phenanthren-9-yl)phenyl)-1,3,2-dioxaborolane (CAS 1417522-96-3)
- 2-([1,1'-Binaphthalen]-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 207739-66-0)
- 7-Fluoroquinolin-4-amine (CAS 948293-49-0)
- 2-Bromo-N-(4-fluoro-3-(trifluoromethyl)phenyl)acetamide (CAS 904283-13-2)
- 2-(6-methoxy-2,3-dihydro-1-benzofuran-3-yl)acetic Acid (CAS 93198-72-2)
- N-(2-Iodophenyl)formamide (CAS 10113-39-0)
- N-(5-Benzoyl-2-oxo-4-phenylpyrimidin-1(2H)-yl)benzamide (CAS 832733-39-8)
- sodium 5-(4-chlorophenyl)-1,3-oxazole-2-carboxylate (CAS 1514835-57-4)
- (S)-2-Fluoro-5-(1-hydroxyethyl)benzonitrile (CAS 1932458-28-0)
- 4-(3,4-Dimethylphenyl)-3,4-dihydrofuro[3,4-d]pyrimidine-2,5(1H,7H)-dione (CAS 1708436-99-0)
- 2-Hydroxy-5-iodo-N-methylbenzamide (CAS 1243391-62-9)
- Semaglutide impurity 70 (CAS CATO-C4X-222670)
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