7-Methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid CAS 123419-87-4
| CAS No. | 123419-87-4 |
| Molecular Formula | C8H6N2O3S |
| Molecular Weight | 210.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
7-Methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid (CAS 123419-87-4), molecular formula C8H6N2O3S and molecular weight 210.21 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H6N2O3S, 7-Methyl-5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylic acid 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 210.21 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C8H6N2O3S |
| Molecular Weight | 210.21 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.) | 1992 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- Methyl 5-oxo-5H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 1233537-12-6)
- Benzo[b]thiophene-6-carboxylic acid 1,1-dioxide (CAS 1241392-47-1)
- 4-Hydroxy-2-methylthieno[2,3-d]pyrimidine-5-carboxylic acid (CAS 1216288-05-9)
- 4-methyl-2-(4H-1,2,4-triazol-3-yl)-1,3-thiazole-5-carboxylic acid (CAS 1258651-75-0)
- 2-Phenyl-6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazol-2-ium chloride (CAS 828914-68-7)
- 1-Phenethylcyclopropan-1-amine (CAS 1165931-90-7)
- 4-Bromo-3-(3,3-difluoroazetidin-1-yl)pyridine (CAS 1779133-61-7)
- 1-(3-Nitrobenzyl)-1H-imidazole-5-carbaldehyde (CAS 85103-01-1)
- 4-Bromo-7-methoxybenzofuran (CAS 1258960-00-7)
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- 5-Δ- Bromobutylhydantoin (CAS 28484-49-3)
- Tert-butyl 6-methylene-1,4-diazepane-1-carboxylate (CAS 2414006-11-2)
- Des-[Gly]31-Semaglutide(x TFA Salt) (CAS 873874-39-6(free base))
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