1H,1'H-[4,4'-Biimidazole]-5,5'-diol CAS 855261-70-0
| CAS No. | 855261-70-0 |
| Molecular Formula | C6H6N4O2 |
| Molecular Weight | 166.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1H,1'H-[4,4'-Biimidazole]-5,5'-diol.
1H,1'H-[4,4'-Biimidazole]-5,5'-diol (CAS 855261-70-0), molecular formula C6H6N4O2 and molecular weight 166.14 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1H,1'H-[4,4'-Biimidazole]-5,5'-diol (C6H6N4O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 166.14 g/mol, it falls into the medium-molecular-weight range. 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).
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), 1H,1'H-[4,4'-Biimidazole]-5,5'-diol 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 | C6H6N4O2 |
| Molecular Weight | 166.14 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 4 |
Recommended Standards
- 1,4,4-Trifluorocyclohexane-1-carbaldehyde (CAS 2412762-32-2)
- 1-Methyl-1H-pyrazolo[4,3-d]pyrimidine-5,7(4H,6H)-dione (CAS 83824-38-8)
- 1,2-Dihydro-[1,2,4]triazolo[4,3-a][1,3,5]triazine-3,5,7(6h)-triimine (CAS 7144-22-1)
- 2-(4-Amino-5-cyano-1H-imidazol-1-yl)acetic acid (CAS 87460-74-0)
- Rizatriptan Impurity 14 (CAS 4454-01-7)
- cis-Bis(2,2?-bipyridine)dichloroosmium(II) (CAS 79982-56-2)
- 3-Methyl-[1,1'-biphenyl]-2-amine (CAS 14294-33-8)
- N-(4-(Hydrazinecarbonyl)phenyl)-3-methylbutanamide (CAS 496013-13-9)
- 5-(4-Chlorophenyl)-1,2,4-triazin-3-amine (CAS 886497-46-7)
- (2-Bromo-5-(trifluoromethyl)phenyl)(4-methylpiperazin-1-yl)methanone (CAS 1502628-61-6)
- tert-Butyl 2-((2-chloro-N-ethylacetamido)methyl)piperidine-1-carboxylate (CAS 1353943-62-0)
- 2-Bromo-5-(4-fluorophenyl)thiophene (CAS 1073313-97-9)
- 4-(Cyclohexanecarbonyl)piperazine-1-carbaldehyde (CAS 928908-83-2)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com