3-Isothiocyanato-2,5-dihydrothiophene 1,1-dioxide CAS 571155-23-2
| CAS No. | 571155-23-2 |
| Molecular Formula | C5H5NO2S2 |
| Molecular Weight | 175.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 3-Isothiocyanato-2,5-dihydrothiophene 1,1-dioxide 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.
3-Isothiocyanato-2,5-dihydrothiophene 1,1-dioxide (CAS 571155-23-2), molecular formula C5H5NO2S2 and molecular weight 175.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, 3-Isothiocyanato-2,5-dihydrothiophene 1,1-dioxide is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C5H5NO2S2 |
| Molecular Weight | 175.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 2 |
Related Isothiocyanato Standards
- 3-isothiocyanato-2,3-dihydro-1$l^{6}-thiophene-1,1-dione (CAS 893725-07-0)
- (3-Isothiocyanato-2,2-dimethylpropyl)dimethylamine (CAS 1019119-63-1)
- 4-Isothiocyanato-3,5-dimethylphenol (CAS 1246818-00-7)
- 3-Isothiocyanato-2,4-dimethylphenol (CAS 1936148-65-0)
- 4-Isothiocyanato-6-(methoxymethyl)pyrimidine (CAS 1192813-77-6)
- 5-Isothiocyanato-3-isopropyl-1-methyl-1H-pyrazole (CAS 1349718-73-5)
- 4-Isothiocyanato-6-methoxypyrimidine (CAS 1192813-23-2)
- 2-Isothiocyanato-6-methoxypyridine (CAS 1103425-81-5)
Recommended Standards
- 3-Methoxy-2-phenyl-2,5-dihydro-1H-pyrrole (CAS 341979-61-1)
- 3-Isopropylindolin-2-one (CAS 4679-87-2)
- 3-Methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-amine (CAS 71799-38-7)
- 3-Isopropyl-2H-benzo[b][1,4]oxazine (CAS 78479-91-1)
- 2'-Fluoro-[1,1'-biphenyl]-3-amine (CAS 176032-77-2)
- 8-Chloro-[1,2,4]triazolo[3,4-f][1,2,4]triazine (CAS 1359655-72-3)
- 2-(2-Methoxyphenyl)-1-phenylethanol (CAS 30314-63-7)
- Kudinoside D (CAS 173792-61-5)
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- 4-Fluoro-2-(1-pyrrolidinyl)benzoic Acid (CAS 952680-24-9)
- 4-(2,4-Dichlorophenyl)-6-phenyl-2,3,4,5-tetrahydropyridazin-3-one (CAS 344282-63-9)
- 3-bromo-7,8-dimethoxy-2-methyl-chromen-4-one (CAS 2813311-28-1)
- Fmoc-Val-Gly-OH (CAS 142810-19-3)
- D-Pro37-Tirzepatide (CAS CATO-CPTD788902)
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