2-Mercapto-1H-imidazole-5-carboxylic acid CAS 25271-85-6
| CAS No. | 25271-85-6 |
| Molecular Formula | C4H4N2O2S |
| Molecular Weight | 144.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 144.15 g/mol gives 2-Mercapto-1H-imidazole-5-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Mercapto-1H-imidazole-5-carboxylic acid (CAS 25271-85-6), molecular formula C4H4N2O2S and molecular weight 144.15 g/mol, is a CATO reference standard with documented purity and traceability.
2-Mercapto-1H-imidazole-5-carboxylic acid (C4H4N2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-Mercapto-1H-imidazole-5-carboxylic 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.
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.) | 1964 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 5-(morpholin-4-ylsulfonyl)-2-pyrrolidin-1-ylbenzoic acid (CAS 790271-13-5)
- 2-((4-Allyl-5-(4-(tert-butyl)phenyl)-4H-1,2,4-triazol-3-yl)thio)-N-(p-tolyl)acetamide (CAS 539812-49-2)
- 4-(2-(Pyrrolidin-1-yl)ethyl)benzene-1,2-diamine (CAS 1337882-64-0)
- 2,3-Dibromo-6-methoxypyridine (CAS 909720-21-4)
- 4-(5-(Phenylcarbamoyl)-1,3,4-thiadiazol-2-yl)butanoic acid (CAS 1142202-80-9)
- (9H-Fluoren-9-yl)methyl3-oxopyrrolidine-1-carboxylate (CAS 672310-12-2)
- TRAF6 Peptide trifluoroacetate salt (CAS 852805-92-6)
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