3,3''-Dihydroxy-2'-methyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid CAS 1613451-81-2
| CAS No. | 1613451-81-2 |
| Molecular Formula | C21H16O6 |
| Molecular Weight | 364.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,3''-Dihydroxy-2'-methyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid is closely related to a flavonoid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,3''-Dihydroxy-2'-methyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid (CAS 1613451-81-2), molecular formula C21H16O6 and molecular weight 364.35 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,3''-Dihydroxy-2'-methyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid (C21H16O6) contains a flavonoid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 14.0, corresponding to approximately 14 ring(s) or double-bond equivalent(s). With a molecular weight of 364.35 g/mol, it falls into the moderately-high-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).
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.
As a certified reference material (CRM), 3,3''-Dihydroxy-2'-methyl-[1,1':4',1''-terphenyl]-4,4''-dicarboxylic acid 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 | C21H16O6 |
| Molecular Weight | 364.35 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1993 |
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Recommended Standards
- 4-Chloro-1,2-diiodobenzene (CAS 1608-45-3)
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- (2S)-2-[[(1S)-3-amino-1-[3-[(1R)-1-amino-2-hydroxy-ethyl]-1,2,4-oxadiazol-5-yl]-3-oxo-propyl]carbamoylamino]-3-hydroxy-butanoic acid (CAS 1673534-76-3)
- Orlistat Impurity 17 (CAS 130793-30-5)
- 5-(2-Bromoethoxy)-4-phenylisoxazole (CAS 194471-09-5)
- 4-(2-(4-Chlorophenoxy)acetyl)piperazin-2-one (CAS 923177-66-6)
- 3,4-Dihydro-4-methyl-1H-1,4-benzodiazepine-2,5-dione (CAS 3415-35-8)
- 5-Bromo-1-ethyl-4-methyl-1H-imidazole (CAS 1856030-55-1)
- N-(But-3-en-1-yl)-N-(2-methylbut-2-en-1-yl)cyclohexanamine (CAS 61907-94-6)
- Tert-butyl (s)-(1-(tetrahydro-2h-pyran-4-carbonyl)pyrrolidin-3-yl)carbamate (CAS 1286207-46-2)
- (1s,2r)-2-(2,5-Dimethylphenyl)cyclohexan-1-ol (CAS 1808331-67-0)
- Methyl 2-(2-ethylbenzo[d]oxazol-5-yl)acetate (CAS 1427460-94-3)
- α Bag Cell Peptide (1-9) (CAS 87549-52-8)
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