4,4'-Di(pyridin-3-yl)-1H,1'H-[2,2'-biimidazole]-5,5'-dicarbaldehyde CAS 634603-98-8
| CAS No. | 634603-98-8 |
| Molecular Formula | C18H12N6O2 |
| Molecular Weight | 344.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,4'-Di(pyridin-3-yl)-1H,1'H-[2,2'-biimidazole]-5,5'-dicarbaldehyde (CAS 634603-98-8), molecular formula C18H12N6O2 and molecular weight 344.33 g/mol, is a CATO reference standard with documented purity and traceability.
4,4'-Di(pyridin-3-yl)-1H,1'H-[2,2'-biimidazole]-5,5'-dicarbaldehyde (C18H12N6O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 4,4'-Di(pyridin-3-yl)-1H,1'H-[2,2'-biimidazole]-5,5'-dicarbaldehyde 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 | C18H12N6O2 |
| Molecular Weight | 344.33 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.) | 1985 |
| Nitrogen Atoms | 6 |
Related Di Standards
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- N3-(Pyridin-2-ylmethyl)-N1-(thiophen-2-yl)piperidine-1,3-dicarboxamide (CAS 1226434-14-5)
- 1-(Pyridin-2-ylmethyl)-3-(thiophen-2-ylmethyl)-1-(thiophen-3-ylmethyl)urea (CAS 1235119-31-9)
- Ethyl 2-((3-(pyridin-4-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate (CAS 868970-37-0)
- 3-Phenyl-5-(pyridin-2-ylmethylene)-2-selenoxothiazolidin-4-one (CAS 375368-24-4)
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Recommended Standards
- 4-(Allyloxy)-1,5-diphenyl-3-(trifluoromethyl)-1H-pyrazole (CAS 318951-46-1)
- N-{[2-(1H-pyrrol-1-yl)phenyl]methyl}-3-(trifluoromethyl)benzamide (CAS 866042-36-6)
- 2-{[3-cyano-6-(thiophen-2-yl)-4-(trifluoromethyl)pyridin-2-yl]sulfanyl}acetic acid (CAS 330645-53-9)
- N-benzyl-N-methyl-3-phenyl-6-(trifluoromethyl)-1,2,4-triazin-5-amine (CAS 383148-48-9)
- Zinc2,4-pentanedionatemonohydrate (CAS 14363-15-6)
- Cyclohexanethiol (CAS 1569-69-3)
- Potassium Bitartrate (CAS 868-14-4)
- Methyl 2-((tert-butoxycarbonyl)amino)-2-(tetrahydro-2H-pyran-4-yl)acetate (CAS 1188366-14-4)
- 6-Bromophthalazine (CAS 19064-74-5)
- (r)-3-(4-Benzyl-2-methylpiperazin-1-yl)propanoic acid (CAS 1134676-78-0)
- Ethyl 4-[4-(N,N-dimethylamino)-phenyl]-4-oxobutanoate (CAS 117937-10-7)
- N-(3-Amino-4-chlorophenyl)-3,5-dichlorobenzamide (CAS 926238-20-2)
- 3-Chloro-5-(trifluoromethyl)pyridine-2-sulfonamide (CAS 1249907-95-6)
- Retatrutide (CAS 2381089-83-2)
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