[4,4'-Biimidazolylidene]-5,5'(1H,1'H)-dione CAS 873378-45-1
| CAS No. | 873378-45-1 |
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures [4,4'-Biimidazolylidene]-5,5'(1H,1'H)-dione 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.
[4,4'-Biimidazolylidene]-5,5'(1H,1'H)-dione (CAS 873378-45-1), molecular formula C6H4N4O2 and molecular weight 164.12 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of [4,4'-Biimidazolylidene]-5,5'(1H,1'H)-dione (C6H4N4O2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H4N4O2 |
| Molecular Weight | 164.12 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 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Related Biimidazolylidene Standards
Recommended Standards
- [1,2,4]Triazolo[4,3-b]pyridazine-6-carboxylic acid (CAS 56434-29-8)
- 1H-Purine-8-carboxylic acid (CAS 28128-23-6)
- [1,2,4]Triazolo[4,3-b]pyridazine-3-carboxylic acid (CAS 330440-42-1)
- 1H-pyrazolo[4,3-d]pyrimidine-5-carboxylic acid (CAS 2125678-94-4)
- 5-(trifluoromethyl)thiophen-2-ol (CAS 1314938-32-3)
- 1,2-Bis(2-(4-((E)-(2-(pyridin-2-yl)hydrazineylidene)methyl)phenoxy)ethoxy)ethane (CAS 303775-85-1)
- 1-(2-Methoxy-2-oxoethyl)pyridin-1-ium bromide (CAS 32727-94-9)
- 1-(2-((Cyclopropylamino)methyl)pyrrolidin-1-yl)ethanone (CAS 1353953-09-9)
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- Imidazo[1,5-a]pyridin-3(2H)-one (CAS 65173-13-9)
- Liraglutide Impurity 21 TFA Salt (CAS CATO-C4X-199221)
Why CATO?
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