Pyrimidine-2-sulfinic acid CAS 288400-79-3
| CAS No. | 288400-79-3 |
| Molecular Formula | C4H4N2O2S |
| Molecular Weight | 144.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Pyrimidine-2-sulfinic 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.
Pyrimidine-2-sulfinic acid (CAS 288400-79-3), molecular formula C4H4N2O2S and molecular weight 144.15 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Pyrimidine-2-sulfinic acid (C4H4N2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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 144.15 g/mol, it falls into the low-molecular-weight range. 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).
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 | C4H4N2O2S |
| Molecular Weight | 144.15 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Pyrimidine Standards
- methyl pyrimidine-4-carboxylate (CAS 2450-08-0)
- methyl pyrimidine-5-carboxylate (CAS 34253-01-5)
- Pyrimidine-4-carbonyl chloride (CAS 184951-32-4)
- Pyrimidine-2-carbonyl Chloride (CAS 220769-83-5)
- Pyrimidine Impurity 3 (CAS CATO-C4X-31753)
- Pyrimidine-2,4-diyldimethanol (CAS 4425-66-5)
- Pyrimidine-4,6-diyldimethanol (CAS 50345-29-4)
- pyrimidine-5-carbonyl chloride (CAS 40929-48-4)
Recommended Standards
- methyl 1,2,5-thiadiazole-3-carboxylate (CAS 63875-20-7)
- Ticagrelor Impurity 137 (CAS 504-17-6)
- Methyl 1,2,3-thiadiazole-5-carboxylate (CAS 81699-19-6)
- Acotiamide Impurity 41 (CAS 40283-41-8)
- 2-(2-Bromo-5-fluorophenyl)-2,2-difluoroacetic acid (CAS 1824005-97-1)
- Methyl 5,6-difluoro-2H-indazole-3-carboxylate (CAS 885279-01-6)
- 3-(Methylsulfonamido)benzaldehyde (CAS 55512-05-5)
- Glycerol phosphate calcium salt hydrate mixture of isomers of alpha- and beta-form, >=96% (calc. based on dry substance, T) (CAS 1336-00-1)
- PRN1371, 98% (HPLC) (CAS 1802929-43-6)
- 3-(Methoxymethylene)-2(3H)-benzofuranone (CAS 40800-90-6)
- Methyl 8-bromo-6-fluoro-1,4-dihydro-4-oxo-2-quinolinecarboxylate (CAS 442549-68-0)
- Ethyl 5-(aminomethyl)imidazo[1,5-a]pyridine-1-carboxylate hydrochloride (CAS 1187932-36-0)
- 4-Chloro-5-(2-methoxyethyl)-5H-pyrrolo[3,2-d]pyrimidine (CAS 919278-16-3)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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