4,4''-Diamino-[1,1':4',1''-terphenyl]-2',5'-diol CAS 34588-30-2
| CAS No. | 34588-30-2 |
| Molecular Formula | C18H16N2O2 |
| Molecular Weight | 292.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4,4''-Diamino-[1,1':4',1''-terphenyl]-2',5'-diol (CAS 34588-30-2), a certified reference material (molecular formula C18H16N2O2, MW 292.33 g/mol) for analytical method development and quality control.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 4,4''-Diamino-[1,1':4',1''-terphenyl]-2',5'-diol is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 292.33 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C18H16N2O2 |
| Molecular Weight | 292.33 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 2 |
Related Diamino Standards
- 2-(3,5-Diamino-1-phenyl-1H-pyrazol-4-yl)-1-phenylethanone (CAS 105576-68-9)
- 2,6-Diamino-5-(7,7,7-trifluoro-6-oxoheptyl)pyrimidin-4(1H)-one (CAS 647831-32-1)
- 2-(3,4-Diamino-5-fluorophenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (CAS 2366994-07-0)
- Methyl 3,4-diamino-5-iodobenzoate (CAS 1258940-57-6)
- Ethyl 2,6-diamino-5-(4-chlorophenyl)pyrimidine-4-carboxylate (CAS 2762-38-1)
- Methyl 4,5-diamino-3-fluoro-2-((2-fluorophenyl)amino)benzoate (CAS 1415560-46-1)
- 2,6-Diamino-5-(6-hydroxy-6-(oxazol-2-yl)hexyl)pyrimidin-4(1H)-one (CAS 647831-20-7)
- 3,4-Diamino-N-(2-methoxyphenyl)benzenesulfonamide (CAS 379725-41-4)
Recommended Standards
- 4,4',4''-Methanetriyltriphenol (CAS 603-44-1)
- 4-[(naphthalen-2-yloxy)methyl]benzohydrazide (CAS 377769-56-7)
- 4,4'-(1,2-Phenylenebis(oxy))dianiline (CAS 49860-97-1)
- 4-[[6-(Acryloyloxy)hexyl]oxy]benzoic Acid (CAS 83883-26-5)
- 5-(Pyridin-4-yl)-1,2,4-oxadiazole-3-carboxylic acid (CAS 1086380-39-3)
- 2-Methyl-6-nitro-1h-benzo[d]imidazole-4-carboxylic acid (CAS 101861-49-8)
- 3-Methyl-1-(4-methylcyclohexyl)-1h-pyrazole-4-carboxylic acid (CAS 1342460-16-5)
- 1-(But-3-en-1-yl)naphthalene (CAS 2489-88-5)
- 1-(2-Propyn-1-yl)azetidine (CAS 1449201-23-3)
- Kazusamycin A (CAS 92090-94-3)
- (S)-3-amino-2-(4-bromobenzyl)propanoic acid (CAS 1260611-15-1)
- 1-methyl-5-pyrrolidin-2-yl-1H-pyrazole (CAS 1171787-08-8)
- (Z)-Hex-3-en-1-yl 2-amino-5-iodobenzoate (CAS 1131605-46-3)
- Liraglutide Impurity 30 (CAS CATO-C4X-199230)
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