Dimethyl 4-formylphthalate CAS 74733-34-9
| CAS No. | 74733-34-9 |
| Molecular Formula | C11H10O5 |
| Molecular Weight | 222.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Dimethyl 4-formylphthalate (CAS 74733-34-9), molecular formula C11H10O5 and molecular weight 222.19 g/mol, is a CATO reference standard with documented purity and traceability.
Dimethyl 4-formylphthalate (C11H10O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Dimethyl 4-formylphthalate 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 | C11H10O5 |
| Molecular Weight | 222.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
Related Dimethyl Standards
- Dimethyl 2-formylterephthalate (CAS 1053661-98-5)
- Dimethyl (1R,2R)-4,4-difluorocyclopentane-1,2-dicarboxylate (CAS 1608143-72-1)
- Dimethyl 5-formylisophthalate (CAS 164073-80-7)
- 3,5-Dimethyl-4-((4-nitro-1H-pyrazol-1-yl)methyl)isoxazole (CAS 1011349-98-6)
- 2,2-Dimethyl-7-nitro-2,3-dihydro-4H-benzo[e][1,3]oxazin-4-one (CAS 1110662-18-4)
- 2-(5-(3,5-Dimethyl-1H-pyrazol-1-yl)-2H-tetrazol-2-yl)acetic acid (CAS 1232770-90-9)
- 2,2-Dimethyl-5-nitro-2H-benzo[b][1,4]oxazin-3(4H)-one (CAS 1365965-22-5)
- 3,5-Dimethyl-2-(2,2,2-trifluoroacetyl)cyclohexan-1-one (CAS 1561450-99-4)
Recommended Standards
- Arteminin (CAS 466639-11-2)
- Ethyl 2-(benzo[d][1,3]dioxol-5-yl)-2-oxoacetate (CAS 86358-30-7)
- alpha,alpha-Difluoro-1-naphthaleneacetic Acid (CAS 73790-14-4)
- Methyl 2,5-dioxo-5,6,7,8-tetrahydro-2H-chromene-3-carboxylate (CAS 77959-75-2)
- 2-(1-Naphthoyl)malononitrile (CAS 1236038-48-4)
- PhytosterolsDISCONTINUED (CAS 68441-03-2)
- 3-(4-(4-Ethoxyphenyl)-5-((3-fluorobenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 477331-03-6)
- Ethyl (2E)-3-(4-chlorophenyl)but-2-enoate (CAS 81187-86-2)
- 4-Bromo-3,5-dimethylphenylboronic acid pinacol ester (CAS 1073338-97-2)
- Methyl 3-oxohex-5-enoate (CAS 100636-39-3)
- Picosulfate Impurity 35 (CAS CATO-C4X-123735)
- 4-(Bis(phosphonomethyl)amino)butanoic acid (CAS 55628-98-3)
- Methyl 7-(benzyloxy)benzo[d][1,3]dioxole-5-carboxylate (CAS 142531-43-9)
- Epidermal Growth Factor Receptor Peptide (985-996) (CAS 96249-43-3)
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