1,2-Bis(4-isopropylphenyl)ethane-1,2-dione CAS 79135-58-3
| CAS No. | 79135-58-3 |
| Molecular Formula | C20H22O2 |
| Molecular Weight | 294.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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 supplies 1,2-Bis(4-isopropylphenyl)ethane-1,2-dione (CAS 79135-58-3), a certified reference material (molecular formula C20H22O2, MW 294.39 g/mol) for analytical method development and quality control.
Structurally, 1,2-Bis(4-isopropylphenyl)ethane-1,2-dione (C20H22O2) contains a steroid core, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 294.39 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).
As a certified reference material (CRM), 1,2-Bis(4-isopropylphenyl)ethane-1,2-dione 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 | C20H22O2 |
| Molecular Weight | 294.39 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
Related Bis Standards
- 2-(4-Isopropylphenyl)-5-phenyl-1H-imidazole-4-thiol (CAS 1325306-39-5)
- 1-(2-isopropylphenyl)-5-phenyl-1H-imidazole-2-thiol (CAS 790271-18-0)
- 3-(4-(4-Isopropylphenyl)thiazol-2-yl)aniline (CAS 886507-93-3)
- 1-(4-Isopropylphenyl)-2-methyl-1H-benzimidazole-5-carboxylic acid (CAS 442531-53-5)
- 4-(2-Isopropylphenyl)-5-(pyridin-3-yl)-4h-1,2,4-triazole-3-thiol (CAS 380442-88-6)
- N-(4-Isopropylphenyl)benzo[d][1,2,3]thiadiazole-5-carboxamide (CAS 891025-42-6)
- 3-((4-Isopropylphenyl)amino)-1-(4-methoxyphenyl)propan-1-one (CAS 939893-48-8)
- 2-((3-Isopropylphenyl)amino)pyridine-3-sulfonamide (CAS 1340689-53-3)
Recommended Standards
- 1-(2-Thienylsulfonyl)-1,2,3,4-tetrahydroquinolin-7-amine (CAS 927996-64-3)
- 1,3-bis(3,4-dimethylphenyl)-2-methylpropane-1,3-dione (CAS 937602-20-5)
- [2-(5-Benzyloxy-1H-indol-3-yl)ethyl]dimethylamine (CAS 25390-67-4)
- 1,4-Dibenzylpiperazine-2-carboxaldehyde (CAS 54969-29-8)
- (S)-4-(1-(2-(Tert-butoxycarbonyl)hydrazinyl)ethyl)benzoic acid (CAS 1391551-63-5)
- 2-Amino-4-sulfobenzoic acid (CAS 98-43-1)
- 1-(Difluoromethyl)-1H-benzo[d]imidazole (CAS 84941-15-1)
- 3-Amino-2-[(4-ethoxyphenyl)methyl]propanamide (CAS 1038293-54-7)
- 2-(Chloromethyl)-5-(4-chlorophenyl)-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 91225-69-3)
- 5-Bromo-6-(2,4-difluorophenyl)-pyridin-2-ylamine (CAS 1189817-66-0)
- 1-benzyl-2-methyl-1h-indole (CAS 17901-58-5)
- 2-(Ethylamino)-5-methyl-1H-imidazol-4(5H)-one (CAS 199996-72-0)
- Benzo[b]thiophen-2-yl(7,7-dimethyl-6,8-dioxa-2-azaspiro[3.5]nonan-2-yl)methanone (CAS 1396889-07-8)
- Semaglutide impurity 86 (CAS CATO-C4X-222686)
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