4,4’-Dihydroxybenzil CAS 33288-79-8
| CAS No. | 33288-79-8 |
| Molecular Formula | C14H10O4 |
| Molecular Weight | 242.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4,4’-Dihydroxybenzil.
CATO supplies 4,4’-Dihydroxybenzil (CAS 33288-79-8), a certified reference material (molecular formula C14H10O4, MW 242.23 g/mol) for analytical method development and quality control.
Structurally, 4,4’-Dihydroxybenzil (C14H10O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. 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 242.23 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4,4’-Dihydroxybenzil 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 | C14H10O4 |
| Molecular Weight | 242.23 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
Recommended Standards
- 4-(Pyridine-4-amido)benzoic acid (CAS 5651-66-1)
- 4,4'-Dimethyl-[1,1'-bi(cyclohexane)]-3,3',6,6'-tetraene-2,2',5,5'-tetraone (CAS 4388-07-2)
- 4-(Pyridine-2-amido)benzoic acid (CAS 5693-36-7)
- 4,5-Diamino-1-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)pyrimidin-2(1H)-one (CAS 88187-95-5)
- 8-(4-Bromophenyl)-8-oxooctanenitrile (CAS 898766-90-0)
- N-[(3-Chloro-2-fluorophenyl)methyl]cyclopropanamine (CAS 878001-21-9)
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- N-Cyclohexyl-4-methyl-3-nitrobenzenesulfonamide (CAS 134187-80-7)
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- (9-D-Asp) Semaglutide X Sodium salt (CAS CATO-CPTD788617)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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