Methyl 5-acetylthiophene-2-carboxylate(Arotinolol Impurity 6) CAS 4101-81-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 4101-81-9 |
| Molecular Formula | C8H8O3S |
| Molecular Weight | 184.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Methyl 5-acetylthiophene-2-carboxylate(Arotinolol Impurity 6) (CAS 4101-81-9) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H8O3S. Molecular weight: 184.21 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H8O3S |
| Molecular Weight | 184.21 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- Methyl 3-acetylthiophene-2-carboxylate (CAS 88105-18-4)
- Methyl 5-acetylthiophene-3-carboxylate (CAS 88770-21-2)
- 3-Acetylthiophene-2-carboxylic acid (CAS 13657-90-4)
- 4-Acetylthiophene-2-carboxylic acid (CAS 88105-23-1)
- 5-Acetylthiophene-3-carboxylic acid (CAS 33148-86-6)
- Ethyl 5-acetylthiophene-2-carboxylate (CAS 33148-82-2)
- 5-Acetylthiophene-2-carboxamide(Arotinolol Impurity 7) (CAS 68257-89-6)
- 3-Acetylthiophene-2-carbaldehyde (CAS 16363-90-9)
Recommended Standards
- Aclidinium bromide Impurity 8 (CAS 4075-58-5)
- Lotilaner Impurity 22 (CAS CATO-C4X-325622)
- 4-(Methylsulfonyl)benzaldehyde (CAS 5398-77-6)
- Fluoxetine Impurity 20 (CAS CATO-C4X-135220)
- Nilotinib EP Impurity E (CAS 2119583-26-3)
- 4-(Chloromethyl)-3-(naphthalen-2-yl)-1-phenyl-1H-pyrazole (CAS 955963-19-6)
- (3-(1,1-Difluoroethyl)phenyl)methanol (CAS 444921-50-0)
- 2-Methoxy-2-(naphthalen-2-yl)propanoic acid (CAS 63049-37-6)
- 2,4-Dichloro-3-methylbenzaldehyde (CAS 63525-18-8)
- Anti-TF Antigen Peptide P30-1 trifluoroacetate salt (CAS 573664-50-3)
Why CATO?
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