Mono-sec-butyl Phthalate CAS 53623-59-9
| CAS No. | 53623-59-9 |
| Molecular Formula | C12H14O4 |
| Molecular Weight | 222.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Mono-sec-butyl Phthalate (C12H14O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO supplies Mono-sec-butyl Phthalate (CAS 53623-59-9), a certified reference material (molecular formula C12H14O4, MW 222.24 g/mol) for analytical method development and quality control.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H14O4 |
| Molecular Weight | 222.24 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Mono Standards
- Mono-tert-Butyl Terephthalate (CAS 20576-82-3)
- 2-Mono-beta-Monocaprylin (CAS 4228-48-2)
- (R)-mono-Ethyl 3-acetoxyglutarate (CAS 113036-11-6)
- Mono(carboxymethyl) Phthalate-d4 (CAS 1346600-11-0)
- mono-n-Propyl Phthalate-3,4,5,6-d4 (CAS 1795020-91-5)
- Mono-(2E-pentenyl) Phthalate (CAS 1334376-71-4)
- Mono(2-carboxyethyl) Phthalate (CAS 92569-47-6)
- Mono(2-hydroxyisobutyl)phthalate (CAS 64339-39-5)
Recommended Standards
- Methyl 7-methoxychromane-3-carboxylate (CAS 885271-74-9)
- Methyl 7-Methoxy-2,3-dihydrobenzofuran-3-acetate (CAS 93772-87-3)
- morinamide (CAS 952-54-5)
- Methyl 7-hydroxy-2,3,4,5-tetrahydro-1H-benzo[e][1,4]diazepine-2-carboxylate (CAS 672310-21-3)
- 2-(4-Fluoronaphthalen-1-yl)propan-2-ol (CAS 55831-06-6)
- 3-((1,3-Dioxoisoindolin-2-yl)methyl)benzoic acid (CAS 106352-01-6)
- 3-methoxybenzene-1-sulfonyl fluoride 882670-26-0 VS-0066 (CAS 882670-26-0)
- 3-ethylbenzene-1-sulfonyl chloride (CAS 34586-44-2)
- tert-Butyl (6-phenylpyrazin-2-yl)carbamate (CAS 1242333-56-7)
- 4-Cyano-N-(3-methylbenzo[d]thiazol-2(3H)-ylidene)benzamide (CAS 330677-92-4)
- N-(4-(piperidin-4-yl)phenyl)acetamide hydrochloride (CAS 2064217-79-2)
- 2-Methoxy-3-(pyridin-3-yl)-5-(trifluoromethyl)pyridine (CAS 1214352-47-2)
- 4-Bromo-2-(cyclobutoxymethyl)-1-methoxybenzene (CAS 1247240-37-4)
- Exenatide Acetate (CAS 141732-76-5)
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