3,3'-(Pyridin-4-ylmethylene)bis(1H-indole) CAS 21182-09-2
| CAS No. | 21182-09-2 |
| Molecular Formula | C22H17N3 |
| Molecular Weight | 323.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
3,3'-(Pyridin-4-ylmethylene)bis(1H-indole) (CAS 21182-09-2), molecular formula C22H17N3 and molecular weight 323.39 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H17N3, 3,3'-(Pyridin-4-ylmethylene)bis(1H-indole) contains a nitrogen-containing heterocyclic scaffold, a nitrile group; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 323.39 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), 3,3'-(Pyridin-4-ylmethylene)bis(1H-indole) 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 | C22H17N3 |
| Molecular Weight | 323.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 3 |
Related Pyridin Standards
- 3-((Pyridin-3-ylmethyl)thio)-7-(p-tolyl)-6,7-dihydro-5H-imidazo[2,1-c][1,2,4]triazole (CAS 921542-99-6)
- N-(Pyridin-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 1383385-64-5)
- N-(Pyridin-4-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide (CAS 864759-38-6)
- 5-(3-Methyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-4-yl)isophthalic acid (CAS 1352638-29-9)
- 3-(5-Methyl-pyridin-2-ylsulfanylmethyl)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1353947-70-2)
- 4-(Pyridin-2-ylmethylsulfanylmethyl)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1353971-65-9)
- 3-(Pyridin-2-ylsulfanylmethyl)-piperidine-1-carboxylic acid tert-butyl ester (CAS 1353985-16-6)
- 3,5-Bis(pyridin-4-ylethynyl)benzoic acid (CAS 2243148-99-2)
Recommended Standards
- 3-(Naphthalen-2-ylsulfonyl)thiazolidine-2-carboxylic acid (CAS 436811-27-7)
- 3-[(5Z)-5-[(3-Methoxyphenyl)methylidene]-4-oxo-2-sulfanylidene-1,3-thiazolidin-3-yl]propanoic acid (CAS 303793-09-1)
- 3-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-ylsulfonyl)benzoic acid (CAS 926230-39-9)
- 3-{[1,1'-biphenyl]-4-carbonyl}-4-methylquinoline (CAS 478064-94-7)
- 2-(Aminooxy)-N-(2-methoxyphenyl)acetamide hydrochloride (CAS 34242-84-7)
- 3-Cyclopropyl-1-phenylprop-2-yn-1-one (CAS 1083010-55-2)
- 4-Acetyl-1H-imidazole-5-carbonitrile (CAS 813462-83-8)
- (3R)-N-(oxetan-3-yl)pyrrolidin-3-amine (CAS 1349699-80-4)
- benzyl 3-(methylamino)azetidine-1-carboxylate (CAS 1630907-35-5)
- Glycopyrrolate Impurity 10 (CAS CATO-C4X-143110)
- 3-(BOC-AMINOMETHYL)-5-BROMO-1H-INDOLE (CAS 339282-64-3)
- 2-(Chloromethyl)-6-(difluoromethyl)-4-methylpyridine-3-carboxaldehyde (CAS 1361880-14-9)
- 2-Undecylimidazoline (CAS 29249-55-6)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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