2-{5-methylthieno[3,2-b]thiophen-3-yl}acetic acid CAS 85504-42-3
| CAS No. | 85504-42-3 |
| Molecular Formula | C9H8O2S2 |
| Molecular Weight | 212.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C9H8O2S2, 2-{5-methylthieno[3,2-b]thiophen-3-yl}acetic acid contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 212.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
CATO supplies 2-{5-methylthieno[3,2-b]thiophen-3-yl}acetic acid (CAS 85504-42-3), a certified reference material (molecular formula C9H8O2S2, MW 212.29 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-{5-methylthieno[3,2-b]thiophen-3-yl}acetic acid 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.
Physical & Chemical Properties
| Molecular Formula | C9H8O2S2 |
| Molecular Weight | 212.29 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
| Sulfur Atoms | 2 |
Related methylthieno Standards
- 2-{5-methylthieno[2,3-b]thiophen-3-yl}acetic acid (CAS 85504-38-7)
- methyl 3-methylthieno[3,2-b]pyridine-7-carboxylate (CAS 1861444-61-2)
- methyl 5-methylthieno[2,3-d]pyrimidine-4-carboxylate (CAS 2306272-41-1)
- methyl 6-methylthieno[2,3-d]pyrimidine-4-carboxylate (CAS 2306268-20-0)
- methyl 6-methylthieno[3,2-d]pyrimidine-4-carboxylate (CAS 2306269-09-8)
- methyl 7-methylthieno[3,2-d]pyrimidine-4-carboxylate (CAS 2306272-06-8)
- Methyl 3-methylthieno[2,3-c]pyridine-2-carboxylate (CAS 111043-08-4)
- Ethyl 3-methylthieno[2,3-b]pyridine-2-carboxylate (CAS 957059-45-9)
Recommended Standards
- 2-Ethyl-5-(4-ethylphenyl)pyrimidine (CAS 208709-64-2)
- 2,5-Dimethyl-N-(pyridin-2-ylmethyl)aniline (CAS 355382-32-0)
- 2-mercapto-5,6-dimethylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 38201-64-8)
- 2,2-Dimethyl-1-(naphthalen-2-yl)propan-1-one (CAS 7270-99-7)
- Abafungin (CAS 129639-79-8)
- 2-[(1-benzylpiperidin-3-yl)amino]propan-1-ol (CAS 1215950-73-4)
- 5-Ethoxycarbonyl-2-thienylzinc bromide solution 0.5 M in THF (CAS 352530-37-1)
- 2-(2-(((5-Bromothiophen-2-yl)methyl)amino)ethoxy)ethan-1-ol (CAS 1042621-77-1)
- (S)-2,5-Dioxopyrrolidin-1-yl 2-(((benzyloxy)carbonyl)amino)pentanoate (CAS 71447-85-3)
- 5-Bromo-2-chloro-4-phenyl-pyrimidine (CAS 870722-92-2)
- (E)-4-(2-nitrostyryl)-6-(trifluoromethyl)-2,3-dihydrothieno[3,2-c]quinoline (CAS 865658-29-3)
- 4-Chloro-6-methoxypicolinic acid (CAS 204378-34-7)
- Ac-Ser-Asp-Lys-Pro-OH (CAS 120081-14-3)
- D-[Phe6]-Semaglutide (CAS CATO-C4X-2226213)
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