1,1-[(2-Ethyl-1,3-propanediyl)bis(oxymethylene)]bisbenzene CAS 33498-90-7
| CAS No. | 33498-90-7 |
| Molecular Formula | C19H24O2 |
| Molecular Weight | 284.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1,1-[(2-Ethyl-1,3-propanediyl)bis(oxymethylene)]bisbenzene (C19H24O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 284.39 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
1,1-[(2-Ethyl-1,3-propanediyl)bis(oxymethylene)]bisbenzene (CAS 33498-90-7), molecular formula C19H24O2 and molecular weight 284.39 g/mol, is a CATO reference standard with documented purity and traceability.
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.
CATO manufactures 1,1-[(2-Ethyl-1,3-propanediyl)bis(oxymethylene)]bisbenzene 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.
Physical & Chemical Properties
| Molecular Formula | C19H24O2 |
| Molecular Weight | 284.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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.) | 1966 |
Related Ethyl Standards
- 2,2'-[(1-Methyl-1,3-propanediyl)bis(oxy)]bis[4-methyl-1,3,2-dioxaborinane] (CAS 2665-13-6)
- 1,3-Propanediyl Bismethanethiosulfonate (CAS 55-96-9)
- 4,4’-(2,2-Propanediyl)dianiline (CAS 2479-47-2)
- 2,2'-(1,3-Propanediyl)bis[1-methyl-1H-benzimidazol-5-amine (CAS 847588-86-7)
- 5,5-(1,3-Propanediyl)bis[5H-dibenz[b,f]azepine] (CAS 62035-55-6)
Recommended Standards
- (S)-2-(1-((2-Amino-3,3-dimethylbutanamido)methyl)cyclohexyl)acetic acid (CAS 478185-94-3)
- Estradiol Impurity N1 (CAS 4011-48-7)
- (R)-Vestitol (CAS 35878-41-2)
- 1,3-di-tert-butyl cyclohexane-1,3-dicarboxylate (CAS 220179-70-4)
- 6-Chloro-3-(4-fluorophenyl)picolinic acid (CAS 1214381-04-0)
- 5-Ethylbarbituric Acid (CAS 2518-72-1)
- 3-((3,5-Dimethylisoxazol-4-yl)methyl)-4-methoxybenzaldehyde (CAS 887679-08-5)
- Atracurium EP Impurity A (CAS 87046-74-0)
- (+)-Ledene (CAS 21747-46-6)
- 5-Bromo-2-(piperidin-4-yloxy)pyridine (CAS 194668-50-3)
- 2-[4-(cyclopropylsulfamoyl)phenyl]acetic acid (CAS 521313-98-4)
- 3-(Pyrrolidin-1-yl)propanoic acid, potassium salt (CAS 858234-31-8)
- 3-Bromo-4-methoxy-N-methylbenzamide (CAS 337536-21-7)
- D-[Val]10-Semaglutide (CAS CATO-CPTD788630)
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