Methyl 4-hydroxy-2-methylthiophene-3-carboxylate CAS 65369-28-0
| CAS No. | 65369-28-0 |
| Molecular Formula | C7H8O3S |
| Molecular Weight | 172.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Methyl 4-hydroxy-2-methylthiophene-3-carboxylate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
CATO supplies Methyl 4-hydroxy-2-methylthiophene-3-carboxylate (CAS 65369-28-0), a certified reference material (molecular formula C7H8O3S, MW 172.20 g/mol) for analytical method development and quality control.
Structurally, Methyl 4-hydroxy-2-methylthiophene-3-carboxylate (C7H8O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 172.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C7H8O3S |
| Molecular Weight | 172.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-Hydroxy-2-(3-methylthiophen-2-yl)acetic acid (CAS 1248481-32-4)
- (R)-2-hydroxy-3-(thiophen-2-yl)propanoic acid (CAS 917247-81-5)
- 2-Hydroxy-2-(thiophen-2-yl)propanoic acid (CAS 54955-42-9)
- 2-Hydroxy-3-(thiophen-2-yl)propanoic acid (CAS 917247-87-1)
- 3-Hydroxy-3-(thiophen-2-yl)propanoic acid (CAS 26359-15-9)
- 6-Hydroxy-2-((methylthio)methyl)pyrimidin-4(3H)-one (CAS 86551-27-1)
- 6-Hydroxy-3-methyl-2-(methylthio)pyrimidin-4(3H)-one (CAS 6945-56-8)
- methyl 3-hydroxy-4-methylthiophene-2-carboxylate (CAS 32711-57-2)
Recommended Standards
- Methyl 4-fluorobicyclo[2.2.1]heptane-1-carboxylate (CAS 84553-41-3)
- methyl 4-methoxythiophene-2-carboxylate (CAS 5118-05-8)
- methyl 4-ethyl-1,2,5-thiadiazole-3-carboxylate (CAS 2107096-67-1)
- Methyl 4-methoxythiophene-3-carboxylate (CAS 65369-22-4)
- Ethyl 2-(4-(methoxymethyl)phenyl)-2-oxoacetate (CAS 1256466-74-6)
- 1-(4-(4-Bromophenyl)thiazol-2-yl)-4-(thiophen-2-yl)-1H-pyrazol-5-amine (CAS 956361-13-0)
- Tolvaptan Impurity 49 (CAS 116815-03-3)
- 5-Cyclopropoxy-2-isopropyl-4-(trifluoromethyl)pyridine (CAS 1243289-02-2)
- Trelagliptin-13C-d3 (CAS 865759-25-7 (unlabelled))
- Methyl 1-(phenylsulfonyl)-1H-pyrrolo[2,3-b]pyridine-2-carboxylate (CAS 1638763-43-5)
- 4-Bromo-2-chloro-5-nitrophenol (CAS 2091684-77-2)
- tert-Butyl ((1S,3R)-3-ethynylcyclopentyl)carbamate (CAS 1474041-18-3)
- 4-[(2-oxopyrrolidin-1-yl)methyl]benzoic acid (CAS 852934-02-2)
- Insulin Degludec Impurity 1 (CAS 843666-26-2)
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