Phthalic Acid, Mono-Methyl Ester CAS 4376-18-5
Purity >95%In StockPharmaceutical Standards
| CAS No. | 4376-18-5 |
| Molecular Formula | C9H8O4 |
| Molecular Weight | 180.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Phthalic Acid, Mono-Methyl Ester (CAS 4376-18-5) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C9H8O4. Molecular weight: 180.16 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C9H8O4 |
| Molecular Weight | 180.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Phthalic Standards
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- Phthalic anhydride-<SUP>13</SUP>C<SUB>6</SUB> (CAS 1173019-01-6)
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Recommended Standards
- Topiramate EP Impurity E (D-fructopyranose) (CAS 6347-01-9)
- 4-Methylphthalic Acid (CAS 4316-23-8)
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- 4-(Cyclopentylmethyl)thiomorpholine 1,1-dioxide (CAS 477864-23-6)
- N-(3-(2-Oxopyrrolidin-1-yl)phenyl)methanesulfonamide (CAS 953141-80-5)
- 1-Phenylbenzo[f]quinolin-3(4H)-one (CAS 64257-50-7)
- 2-Azaspiro[4.4]Nonan-7-ol hydrochloride (CAS 2306272-60-4)
- N-(2-Hydroxyethyl)-N-methyl-2-(methylamino)-acetamide hydrochloride (CAS 1219982-17-8)
- 2-Amino-1-(4-chloro-3-fluorophenyl)propane-1,3-diol (CAS 1496196-31-6)
- Liraglutide (14-31)TFA Salt (CAS CATO-C4X-19927)
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 13829788188 / jacky.chen@cato-chem.com