3,3',5,5'-Tetramethyl-4,4'-di(2-hydroxethanyloxy)-bibenzene CAS 120703-31-3
| CAS No. | 120703-31-3 |
| Molecular Formula | C20H26O4 |
| Molecular Weight | 330.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3,3',5,5'-Tetramethyl-4,4'-di(2-hydroxethanyloxy)-bibenzene 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.
3,3',5,5'-Tetramethyl-4,4'-di(2-hydroxethanyloxy)-bibenzene (CAS 120703-31-3), molecular formula C20H26O4 and molecular weight 330.42 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3,3',5,5'-Tetramethyl-4,4'-di(2-hydroxethanyloxy)-bibenzene (C20H26O4) is characterized by a flavonoid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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).
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.
Physical & Chemical Properties
| Molecular Formula | C20H26O4 |
| Molecular Weight | 330.42 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related Tetramethyl Standards
- 3,3,4,4-Tetramethyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (CAS 918645-81-5)
- 3,4,4,5-Tetramethyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (CAS 918646-28-3)
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- 1-Ethyl-4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine (CAS 364794-83-2)
- 1,1,5,5-Tetramethyl-3,3-diphenyltrisiloxane (CAS 17875-55-7)
- 4,4,5,5-Tetramethyl-2-(4-(naphthalen-1-yl)phenyl)-1,3,2-dioxaborolane (CAS 1028729-05-6)
Recommended Standards
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- Tert-butyl 4-(3-cyano-6-isopropylpyridin-2-yl)piperazine-1-carboxylate (CAS 1221792-09-1)
- 5-(Bromomethyl)-2-fluoro-4-iodopyridine (CAS 1034466-98-2)
- (2-Chloropyridin-4-yl)methanesulfonyl chloride (CAS 1062069-19-5)
- Vilanterol-d4 Triphenylacetate (CAS 2021249-10-3(non-labelled))
- tert-Butyl (R)-2-(3,5-difluorobenzyl)piperazine-1-carboxylate (CAS 1240589-09-6)
- (R)-6-Bromo-N-(pyrrolidin-3-yl)pyridin-2-amine hydrochloride (CAS 1289585-00-7)
- (2R,3R,4S,5S)-2-(6-Amino-9H-purin-9-yl)-5-((phenylthio)methyl)tetrahydrofuran-3,4-diol (CAS 5135-37-5)
- 3,3-Difluoro-4-piperidinecarboxylic acid (CAS 1303974-04-0)
- 3-Isopropyl-2-methoxypyridine (CAS 1083845-78-6)
- tert-butyl (4S,5R)-4,5-dimethyl-2,2-dioxo-oxathiazolidine-3-carboxylate (CAS 2429965-94-4)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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