3-(Benzo[d]thiazol-2-yl)-1H-pyrazol-5(4H)-one CAS 64323-61-1
| CAS No. | 64323-61-1 |
| Molecular Formula | C10H7N3OS |
| Molecular Weight | 217.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-(Benzo[d]thiazol-2-yl)-1H-pyrazol-5(4H)-one.
3-(Benzo[d]thiazol-2-yl)-1H-pyrazol-5(4H)-one (CAS 64323-61-1) is a high-purity analytical reference standard with the molecular formula C10H7N3OS and a molecular weight of 217.25 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, 3-(Benzo[d]thiazol-2-yl)-1H-pyrazol-5(4H)-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 217.25 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.
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), 3-(Benzo[d]thiazol-2-yl)-1H-pyrazol-5(4H)-one 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 | C10H7N3OS |
| Molecular Weight | 217.25 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Benzo Standards
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- 4-(Benzo[d]thiazol-2-yl)-1H-1,2,3-triazol-5-amine (CAS 553681-84-8)
- 4-(Benzo[d]thiazol-2-yl)-1H-pyrazol-5(4H)-one (CAS 227178-06-5)
- 4-(Benzo[d]thiazol-2-yl)isoxazol-5-amine (CAS 208938-48-1)
- 5-(Benzo[d]thiazol-2-yl)-1H-1,2,4-triazol-3-amine (CAS 37547-62-9)
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Recommended Standards
- 3-([1,2,4]Triazolo[3,4-b][1,3,4]thiadiazol-6-yl)aniline (CAS 872495-89-1)
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- 2-Amino-1,3,5-triazino[1,2-a]benzimidazole-4(3H)-thione (CAS 78650-21-2)
- 3-Phenyl-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-amine (CAS 3176-53-2)
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- 3-Bromo-4-(1,1-difluoroethyl)pyridine (CAS 2246373-31-7)
- 4-Chloro-2-(difluoromethyl)-5-iodonicotinoyl chloride (CAS 1805178-33-9)
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- N-(1-Oxo-1,3-dihydroisobenzofuran-5-yl)benzamide (CAS 500260-82-2)
- Peptide 441 (CAS CATO-CPTD788441)
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