5-(4-Chlorophenyl)-1H-pyrrole-2-carboxylic acid CAS 131172-61-7
| CAS No. | 131172-61-7 |
| Molecular Formula | C11H8ClNO2 |
| Molecular Weight | 221.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 5-(4-Chlorophenyl)-1H-pyrrole-2-carboxylic acid (C11H8ClNO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 221.64 g/mol, it falls into the medium-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.
5-(4-Chlorophenyl)-1H-pyrrole-2-carboxylic acid (CAS 131172-61-7), molecular formula C11H8ClNO2 and molecular weight 221.64 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 5-(4-Chlorophenyl)-1H-pyrrole-2-carboxylic acid 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 | C11H8ClNO2 |
| Molecular Weight | 221.64 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 tightly closed to prevent evaporation |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chlorophenyl Standards
- 5-(3-Chlorophenyl)-1h-pyrrole-2-carboxylic acid (CAS 1048917-65-2)
- 5-(2-Chlorophenyl)-1h-pyrrole-2-carboxylic acid (CAS 1048919-09-0)
- 3-(4-Chlorophenyl)-1H-pyrazole-4-carbaldehydeoxime (CAS 1199253-23-0)
- 5-(4-Chlorophenyl)-3-methylisoxazole-4-carbaldehyde (CAS 1208081-07-5)
- 5-(3-Chlorophenyl)-3-methylisoxazole-4-carbaldehyde (CAS 1208081-72-4)
- 4-(4-Chlorophenyl)-1H-pyrrole-3-carboxylic acid (CAS 122453-98-9)
- 3-(4-Chlorophenyl)-6-methyl-1,2,4-triazin-5(2H)-one (CAS 126542-93-6)
- 3-(4-Chlorophenyl)-5-methylisoxazole-4-carbaldehyde (CAS 127426-59-9)
Recommended Standards
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- 3-Amino-5-chloro-1-phenylpyrazin-2(1H)-one (CAS 1269528-56-4)
- N-P-N-A-N-P-N-A (CAS 110713-84-3)
- 4-(5-Bromopyrimidin-4-yl)piperazin-2-one (CAS 1536639-96-9)
- (9H-Fluoren-9-yl)methyl hydroxycarbamate (CAS 190656-01-0)
- 2-(Difluoromethyl)-5-nitro-4-(trifluoromethoxy)pyridine-3-carbonyl chloride (CAS 1804857-15-5)
- Sodium 2-(trifluoromethoxy)benzenesulfinate (CAS 1233509-88-0)
- 6-Carboxypyridine-3-boronic Acid (CAS 913836-11-0)
- Methyl 3-(dimethylamino)-2-isocyanoacrylate (CAS 113212-14-9)
- 3,5-Dimethyl-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 61226-19-5)
- Allyl 5-phenylpentanoate (CAS 89414-47-1)
- Semaglutide impurity 22(OtBu-Ste-γGlu(OtBu)-AEEA-AEEA-OH) (CAS 1118767-16-0)
Why CATO?
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