Methyl 7-hydroxy-3-methyl-5-oxo-5h-thiazolo[3,2-a]pyrimidine-6-carboxylate CAS 1105189-80-7
| CAS No. | 1105189-80-7 |
| Molecular Formula | C9H8N2O4S |
| Molecular Weight | 240.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 7-hydroxy-3-methyl-5-oxo-5h-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 1105189-80-7), molecular formula C9H8N2O4S and molecular weight 240.24 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H8N2O4S, Methyl 7-hydroxy-3-methyl-5-oxo-5h-thiazolo[3,2-a]pyrimidine-6-carboxylate contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 240.24 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).
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 | C9H8N2O4S |
| Molecular Weight | 240.24 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-((7-Hydroxy-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)thio)acetic acid (CAS 67740-23-2)
- 4-Hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-Dioxide (CAS 24683-22-5)
- 7-Hydroxy-5-methyl-2-(methylthio)-[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 63059-40-5)
- 2-Hydroxy-4-(2-(2-methoxyethoxy)ethoxy)benzaldehyde (CAS 1172635-12-9)
- (2R)-2-hydroxy-1-(2,4,5-trimethoxyphenyl)propan-1-one (CAS 1229005-35-9)
- 2-Hydroxy-4-isopropyl-3,5-dimethoxybenzoic acid (CAS 1352034-26-4)
- 3-Hydroxy-2-phenylchroman-4-one (CAS 1621-55-2)
- (S)-7-Hydroxy-2-phenylchroman-4-one (CAS 2545-13-3)
Recommended Standards
- Methyl 2H-benzo[e][1,2,4]thiadiazine-3-carboxylate 1,1-dioxide (CAS 1031967-52-8)
- 2-(1,1-Dioxo-4h-1,2,4-benzothiadiazin-4-yl)acetic acid (CAS 1209718-24-0)
- Flubendazole EP Impurity D (CAS 1515807-30-3)
- 1-(2-(5-Mercapto-1,3,4-oxadiazol-2-yl)ethyl)pyrimidine-2,4(1h,3h)-dione (CAS 1215906-72-1)
- Methyl 5-hydroxy-2-(trifluoromethyl)benzoate (CAS 1261852-24-7)
- (3R,4S)-4-fluoropyrrolidin-3-amine (CAS 771440-91-6)
- 4-(Hydrazinylmethyl)pyridazine (CAS 1363380-98-6)
- 2,3,6,7,10,11-Hexamethoxytriphenylene (CAS 808-57-1)
- 1,2,4-Triiodobenzene (CAS 615-68-9)
- 2-(Thiophen-2-yl)-1h-1,3-benzodiazole-7-carboxylic acid (CAS 124340-77-8)
- N1-(2-(Furan-3-yl)ethyl)-N2-(2-methoxyethyl)oxalamide (CAS 1428379-95-6)
- (6-Dimethylsulfamoyl-3-oxo-1,3-dihydro-isobenzofuran-1-yl)-acetic acid (CAS 144402-61-9)
- 4-Cyano-6-(difluoromethyl)-3-(trifluoromethyl)pyridine-2-carboxylic acid (CAS 1804423-85-5)
- Tau Peptide (277-291) trifluoroacetate salt (CAS 330456-40-1)
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