(5-(Methoxycarbonyl)-4-methylthiophen-2-yl)boronic acid CAS 1256345-70-6
| CAS No. | 1256345-70-6 |
| Molecular Formula | C7H9BO4S |
| Molecular Weight | 200.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(5-(Methoxycarbonyl)-4-methylthiophen-2-yl)boronic acid (CAS 1256345-70-6), molecular formula C7H9BO4S and molecular weight 200.02 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of (5-(Methoxycarbonyl)-4-methylthiophen-2-yl)boronic acid (C7H9BO4S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
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 | C7H9BO4S |
| Molecular Weight | 200.02 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Sulfur Atoms | 1 |
Related Methoxycarbonyl Standards
- 2-(Methoxycarbonyl)-5-methylthiophene-3-boronic acid (CAS 2377608-82-5)
- [4-(methoxycarbonyl)-2-methylphenyl]boronic acid (CAS 158429-38-0)
- [4-(methoxycarbonyl)-3-methylphenyl]boronic acid (CAS 603122-81-2)
- 3-(methoxycarbonyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid (CAS 1820583-15-0)
- 3-(Methoxycarbonyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid (CAS 57105-58-5)
- 2-(5-(Methoxycarbonyl)thiophen-2-yl)acetic acid (CAS 142667-06-9)
- [1-(Methoxycarbonyl)cyclohexyl]acetic acid (CAS 59590-89-5)
- 3-Methoxycarbonyl PROXYL (CAS 2154-33-8)
Recommended Standards
- 1-Iodobutan-2-ol (CAS 124780-92-3)
- 4,8-Dichloropyrido[3,4-d]pyrimidine (CAS 1260663-37-3)
- 1-Iodo-2-methoxypropane (CAS 123692-02-4)
- 2,4-Dichloropyrido[2,3-d]pyrimidine (CAS 126728-20-9)
- Ethyl 4,5,6,7-tetrahydrobenzo[d]isoxazole-3-carboxylate (CAS 1013-14-5)
- PIPERIDINE-3-CARBOXAMIDE HCL (CAS 1019852-04-0)
- 2-Phenyl-1H-benzo[d]imidazol-5-ol hydrobromide (CAS 1051369-19-7)
- 4-Bromoquinoline-6-carbaldehyde (CAS 1637558-90-7)
- 3,5-Dibromo-1-[(2-chlorophenyl)methyl]-1h-1,2,4-triazole (CAS 917219-31-9)
- JT010 (CAS 917562-33-5)
- (S)-N-Methyl-2,2-dimethyl-1-trifluoromethyl-propylamine (CAS 1389320-30-2)
- 2-((5-(4-(tert-Butyl)phenyl)-4-(4-methoxyphenyl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-isopropylphenyl)acetamide (CAS 477313-63-6)
- 2-(2-Methoxy-5-nitrophenoxy)acetic acid (CAS 103440-70-6)
- Des-Pro36-Tirzepatide (CAS CATO-CPTD788937)
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