5-Propyl-1,2,3-thiadiazole-4-carboxylic acid CAS 1707735-20-3
| CAS No. | 1707735-20-3 |
| Molecular Formula | C6H8N2O2S |
| Molecular Weight | 172.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5-Propyl-1,2,3-thiadiazole-4-carboxylic acid (CAS 1707735-20-3), molecular formula C6H8N2O2S and molecular weight 172.20 g/mol, is a CATO reference standard with documented purity and traceability.
5-Propyl-1,2,3-thiadiazole-4-carboxylic acid (C6H8N2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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 | C6H8N2O2S |
| Molecular Weight | 172.20 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 |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Propyl Standards
- 4-Propyl-1,2,3-thiadiazole-5-carboxylic acid (CAS 1021073-44-8)
- 1,3,4-Thiadiazole-2,5-dicarboxylic acid (CAS 188935-31-1)
- 1,2,5-Thiadiazole-3,4-dicarboxylic acid (CAS 3762-94-5)
- 1,1'-(1,2,5-Thiadiazole-3,4-diyl)diethanone (CAS 112390-32-6)
- 1,3,4-thiadiazole-2-sulfonamide (CAS 25182-53-0)
- 4-Ethyl-[1,2,3]thiadiazole-5-carbonyl chloride 889939-72-4 (CAS 889939-72-4)
- 1,2,4-Thiadiazole-3-sulfonamide (CAS 1315367-13-5)
- 5-methyl-1,3,4-thiadiazole-2-sulfonamide (CAS 66464-90-2)
Recommended Standards
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- N,N-Dimethyl-4-(1-piperazinyl)benzamide (CAS 158985-40-1)
- 7-Bromo-2-methylpyrido[3,2-d]pyrimidin-4-ol (CAS 1228666-56-5)
- N-((5-(Methoxymethyl)-1,2,4-oxadiazol-3-yl)methyl)formamide (CAS 110035-80-8)
- 2-(Benzyloxy)-4-(trifluoromethyl)benzonitrile (CAS 81465-87-4)
- N'-Cyano-3-fluorobenzene-1-carboximidamide (CAS 1431559-90-8)
- Licochalcone A (CAS 58749-22-7)
- 4-(4-Bromophenyl)but-3-en-2-ol (CAS 875852-27-0)
- 5-(((2,2-Dimethyl-2,3-dihydrobenzofuran-7-yl)oxy)methyl)-4-(p-tolyl)-2,4-dihydro-3H-1,2,4-triazole-3-thione (CAS 497060-85-2)
- Semaglutide impurity 60 (CAS CATO-C4X-222660)
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