3-Hydroxy-5-methanesulfonyl-1,2-thiazole-4-carbonitrile CAS 25629-56-5
| CAS No. | 25629-56-5 |
| Molecular Formula | C5H4N2O3S2 |
| Molecular Weight | 204.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 3-Hydroxy-5-methanesulfonyl-1,2-thiazole-4-carbonitrile (CAS 25629-56-5), a certified reference material (molecular formula C5H4N2O3S2, MW 204.23 g/mol) for analytical method development and quality control.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 3-Hydroxy-5-methanesulfonyl-1,2-thiazole-4-carbonitrile is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 204.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C5H4N2O3S2 |
| Molecular Weight | 204.23 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.) | 1964 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Hydroxy Standards
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- 6-Ethyl-7-hydroxy-4-methyl-2H-chromen-2-one (CAS 1484-73-7)
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Recommended Standards
- 3-Ethyl-7-(hydroxymethyl)quinoxalin-2(1H)-one (CAS 2589532-22-7)
- 3-Isopropylquinazoline-2,4(1H,3H)-dione (CAS 5943-91-9)
- 3-Ethyl-7-(hydroxymethyl)-1,5-naphthyridin-2(1H)-one (CAS 2589531-74-6)
- 3-Methoxy-4-(2-methyloxazol-5-yl)aniline (CAS 568556-28-5)
- 1-Methyl-4-(2-(pyrrolidin-1-yl)pyrimidin-5-yl)-1H-pyrrole-2-carboxylic acid (CAS 1422061-33-3)
- Carbaryl Impurity 10 (CAS 32263-74-4)
- 3-Bromo-2-ethoxypyridin-4-amine (CAS 1232433-25-8)
- 4-Chloro-2,3-dimethyl-6-nitrophenol (CAS 211363-27-8)
- 2-amino-N-(6-chloro-3,4-dihydro-2H-1-benzothiopyran-4-yl)pentanamide hydrochloride (CAS 1423024-29-6)
- 1-(1-((Tetrahydrofuran-2-yl)methyl)-1H-pyrazol-4-yl)ethan-1-one (CAS 1341595-62-7)
- 5-(Aminomethyl)pyridin-3-ol (CAS 1243414-96-1)
- Ethyl (1s,3s)-1-amino-3-ethoxycyclobutane-1-carboxylate (CAS 2306249-75-0)
- 3-phenyl-2-sulfanyl-3H,4H-thieno[3,2-d]pyrimidin-4-one (CAS 338751-59-0)
- Semaglutide impurity 42 (CAS CATO-C4X-222642)
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