2-Methoxythieno[3,2-d]pyrimidin-4-ol CAS 676997-70-9
| CAS No. | 676997-70-9 |
| Molecular Formula | C7H6N2O2S |
| Molecular Weight | 182.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO supplies 2-Methoxythieno[3,2-d]pyrimidin-4-ol (CAS 676997-70-9), a certified reference material (molecular formula C7H6N2O2S, MW 182.20 g/mol) for analytical method development and quality control.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-Methoxythieno[3,2-d]pyrimidin-4-ol is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 182.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 2-Methoxythieno[3,2-d]pyrimidin-4-ol 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 | C7H6N2O2S |
| Molecular Weight | 182.20 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 1985 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methoxythieno Standards
- 6-Methoxythieno[3,2-b]pyridin-5(4H)-one (CAS 1228009-40-2)
- 2-methoxythieno[3,2-d]pyrimidine (CAS 1259978-29-4)
- 3-Methoxythieno[3,4-b]pyridine-5,7-diamine (CAS 1071365-43-9)
- 7-Methoxythieno[3,4-c]pyridine-1,3-diamine (CAS 314033-46-0)
- 4-Methoxythieno[3,2-d]pyrimidine (CAS 16228-99-2)
- 6-Methoxythieno[2,3-b]pyridine (CAS 99429-90-0)
- 7-Methoxythieno[3,2-b]pyridine (CAS 69626-86-4)
- 4-Methoxythieno[3,2-d]pyrimidine-7-carboxylic acid (CAS 2715124-08-4)
Recommended Standards
- 2-Mercapto-3-methyl-3H-purin-6(9H)-one (CAS 28139-02-8)
- 2-Nitrobenzene-1-carbothioamide (CAS 70102-35-1)
- 2-Hydrazinylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 210051-31-3)
- 3-(Methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one (CAS 90914-36-6)
- (4-Phenoxythiophen-2-yl)(phenyl)methanol (CAS 944522-73-0)
- n-Methyl-4-morpholinoaniline (CAS 173186-17-9)
- 2-(1-(Tert-butoxycarbonyl)piperidin-4-yl)cyclopropane-1-carboxylic acid (CAS 1781383-08-1)
- 2-Chloro-N-[4-(4-propyl-phenyl)-thiazol-2-yl]-acetamide (CAS 726151-39-9)
- 5-(4-Bromophenyl)furan-2-carbonitrile, 97% (CAS 57667-10-4)
- n-(2-((2-Bromobenzyl)amino)ethyl)acetamide (CAS 1042541-42-3)
- Dimethyl 5-(N-methylmethylsulfonamido)isophthalate (CAS 695215-93-1)
- 2-(3-Acetyl-5-cyanophenyl)acetic acid (CAS 1393567-34-4)
- (3,5-Dimethoxyphenyl)(ethyl)sulfane (CAS 849919-94-4)
- Semaglutide impurity 206 (CAS CATO-C4X-2226206)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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