4,4'-(2-(4-Nitrophenyl)-1H-imidazole-4,5-diyl)dianiline CAS 171861-33-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 171861-33-9 |
| Molecular Formula | C21H17N5O2 |
| Molecular Weight | 371.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4'-(2-(4-Nitrophenyl)-1H-imidazole-4,5-diyl)dianiline (CAS 171861-33-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C21H17N5O2. Molecular weight: 371.39 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C21H17N5O2 |
| Molecular Weight | 371.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 5 |
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Recommended Standards
- 1-(5,7-Diphenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)pyrrolidine-2,5-dione (CAS 171668-01-2)
- 2-[2-(2-Pyridinyl)-5-oxazolyl]-6-[5-(2-pyridinyl)-2-oxazolyl]pyridine (CAS 1835305-09-3)
- (2R,3R,4S,5R)-2-(6-Amino-2-phenethyl-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 163163-46-0)
- 5-Bromo-N-(1-morpholinopropan-2-yl)furan-2-carboxamide (CAS 1208756-51-7)
- 4-(3-(Furan-2-yl)-1H-1,2,4-triazol-5-yl)-2-methoxyphenol (CAS 1416339-88-2)
- (E)-3-(2-(prop-2-yn-1-yloxy)phenyl)acrylic acid (CAS 1350704-52-7)
- Methyl 2-(4,4-dimethyl-6-nitro-2-oxo-3,4-dihydroquinolin-1(2H)-yl)acetate (CAS 1355173-67-9)
- Ethyl 2-(cyclopropylmethyl)-1,3-dithiane-2-carboxylate (CAS 527385-30-4)
- 3-Benzyl-7-(phenylsulfonyl)-9-oxa-3,7-diazabicyclo[3.3.1]nonane (CAS 335620-96-7)
- Semaglutide impurity 237 (CAS CATO-C4X-2226237)
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