6-methoxy-5-nitropyrimidine-4-thiol CAS 7154-33-8
| CAS No. | 7154-33-8 |
| Molecular Formula | C5H5N3O3S |
| Molecular Weight | 187.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 6-methoxy-5-nitropyrimidine-4-thiol (C5H5N3O3S) 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 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 187.18 g/mol, it falls into the medium-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).
CATO supplies 6-methoxy-5-nitropyrimidine-4-thiol (CAS 7154-33-8), a certified reference material (molecular formula C5H5N3O3S, MW 187.18 g/mol) for analytical method development and quality control.
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.
As a certified reference material (CRM), 6-methoxy-5-nitropyrimidine-4-thiol 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 | C5H5N3O3S |
| Molecular Weight | 187.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related methoxy Standards
- 1-Methoxy-4-isoquinolinecarboxaldehyde (CAS 1005772-69-9)
- Methyl 1-methoxy-4-oxopiperidine-3-carboxylate (CAS 100911-31-7)
- 7-Methoxy-3-oxo-2,3-dihydro-1H-indene-4-carbonitrile (CAS 1260009-78-6)
- 2-Methoxy-4-nitrobenzaldehyde (CAS 136507-15-8)
- 6-Methoxy-3-quinolinecarboxaldehyde (CAS 13669-60-8)
- 5-Methoxy-3-methylbenzofuran-2-carbonitrile (CAS 35351-62-3)
- 6-Methoxy-2H-chromene-3-carbonitrile (CAS 57543-71-2)
- 7-Methoxy-2h-chromene-3-carbonitrile (CAS 57543-70-1)
Recommended Standards
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- 2-Acetamido-5-Nitrothiazole (CAS 140-40-9)
- (3-(4-Bromophenyl)-5-methylisoxazol-4-yl)methanol (CAS 1159981-17-5)
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- Ethyl 2-benzamidoacrylate (CAS 38524-17-3)
- Ribociclib Impurity 25 (CAS CATO-C4X-310025)
- Triazoxide desoxy (CAS 54448-61-2)
- (E)-4-Bromo-N'-(2-hydroxybenzylidene)benzohydrazide (CAS 125741-51-7)
- 5-(tert-Butyl) 7-ethyl 1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridine-5,7-dicarboxylate (CAS 1000994-24-0)
- Ethyl (2r)-2-aminobutanoate hydrochloride (CAS 127641-80-9)
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