Dimethyl 5-methylisophthalate CAS 13438-29-4
| CAS No. | 13438-29-4 |
| Molecular Formula | C9H6Cl2O2 |
| Molecular Weight | 217.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Dimethyl 5-methylisophthalate (CAS 13438-29-4), molecular formula C9H6Cl2O2 and molecular weight 217.05 g/mol, is a CATO reference standard with documented purity and traceability.
Dimethyl 5-methylisophthalate (C9H6Cl2O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures Dimethyl 5-methylisophthalate 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 | C9H6Cl2O2 |
| Molecular Weight | 217.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 5,6-Dichloro-1-methyl-1,3-dihydro-2H-benzo[d]imidazol-2-one (CAS 1332624-58-4)
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- 5,7-Dichloro-6-methyl-1,3-benzoxazol-2-amine (CAS 1326813-70-0)
- 3-(2,4-Dichlorophenyl)-3-oxopropanal (CAS 162251-01-6)
- Pentamethylcyclopentasiloxane (CAS 6166-86-5)
- 3-Bromo-8-methoxyquinoline (CAS 103030-27-9)
- 3-(3,3,3-Trifluoropropyl)pyrrolidin-3-ol (CAS 1340457-19-3)
- 2-(2-Hydroxyethoxy)ethyl acetate (CAS 2093-20-1)
- 5-Hydroxy Omeprazole Sodium Salt (CAS 1215629-45-0)
- (3-Amino-1-benzylpiperidin-3-yl)methanol (CAS 885268-85-9)
- 2-Hydroxy-3,4-dimethylbenzoic acid (CAS 58138-74-2)
- 3-(Methanesulfinylmethyl)-1-benzothiophene-2-carboxylic acid (CAS 1247628-27-8)
- 2-Bromo-2-methyl-N-phenylpropanamide (CAS 2322-45-4)
- Semaglutide impurity 44 (CAS CATO-C4X-222644)
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