2-Methoxy-1-methyl-5-nitro-1H-pyrrole-3-carbonitrile CAS 89998-67-4
| CAS No. | 89998-67-4 |
| Molecular Formula | C7H7N3O3 |
| Molecular Weight | 181.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 2-Methoxy-1-methyl-5-nitro-1H-pyrrole-3-carbonitrile is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 181.15 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.
2-Methoxy-1-methyl-5-nitro-1H-pyrrole-3-carbonitrile (CAS 89998-67-4) is a high-purity analytical reference standard with the molecular formula C7H7N3O3 and a molecular weight of 181.15 g/mol.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C7H7N3O3 |
| Molecular Weight | 181.15 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 3 |
Related Methoxy Standards
- 2-Methoxy-6-nitrobenzaldehyde (CAS 19689-88-4)
- 2-Methoxy-3-nitrobenzaldehyde (CAS 22065-49-2)
- 3-Methoxy-4-nitrobenzaldehyde (CAS 80410-57-7)
- 3-Methoxy-5-nitrobenzaldehyde (CAS 354512-22-4)
- 4-Methoxy-2-nitrobenzaldehyde (CAS 22996-21-0)
- 2-(6-Methoxy-2-methylpyridin-3-yl)acetic acid (CAS 1000507-39-0)
- (R)-2-Methoxy-phenylglycine (CAS 103889-84-5)
- Ethyl 2-methoxy-6-pyridinecarboxylate (CAS 1214346-49-2)
Recommended Standards
- 2-Hydroxy-5-nitrosobenzoic Acid Methyl Ester (CAS 202117-16-6)
- 2-hydroxy-5-methyl-3-nitrobenzaldehyde (CAS 66620-31-3)
- 2-Methyl-5-nitronicotinamide (CAS 27715-68-0)
- 2-Hydroxy-4’-nitroacetophenone (CAS 64611-67-2)
- 1-(4-Fluoro-2-methylphenyl)ethan-1-ol (CAS 700-34-5)
- Ethyl 4-bromo-2-fluoro-6-methylbenzoate (CAS 1807043-73-7)
- 2-Amino-4-Nitrobenzoic Acid (CAS 619-17-0)
- 3-(1-tert-Butoxycarbonylamino-2-carboxy-ethyl)-piperidine-1-carboxylic acid benzyl ester (CAS 886362-36-3)
- Ceritinib Impurity 19 (CAS CATO-C4X-104819)
- 4-Methyl-N-((1-methyl-5-nitro-1H-imidazol-2-yl)methylene)aniline (CAS 129661-57-0)
- 4-(3-Fluoro-4-methoxybenzoyl)-3-hydroxy-1-(3-morpholinopropyl)-5-(pyridin-4-yl)-1H-pyrrol-2(5H)-one (CAS 618073-02-2)
- Cholecalciferol impurity 18 (CAS 2227309-94-4)
- 1-IODO-2-(IODOMETHYL)-4,5-DIMETHYLBENZENE (CAS 1822674-60-1)
- Palmitoyl Tripeptide-1 HCl (CAS 2757690-14-3)
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