3-Cyclopropyl-5-isothiazolecarboxylic acid CAS 1781933-78-5
| CAS No. | 1781933-78-5 |
| Molecular Formula | C7H7NO2S |
| Molecular Weight | 169.20 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-Cyclopropyl-5-isothiazolecarboxylic acid.
3-Cyclopropyl-5-isothiazolecarboxylic acid (CAS 1781933-78-5) is a high-purity analytical reference standard with the molecular formula C7H7NO2S and a molecular weight of 169.20 g/mol.
3-Cyclopropyl-5-isothiazolecarboxylic acid (C7H7NO2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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.
CATO manufactures 3-Cyclopropyl-5-isothiazolecarboxylic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H7NO2S |
| Molecular Weight | 169.20 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Cyclopropyl Standards
- 2-Cyclopropyl-1,3-thiazole-5-carboxylic acid (CAS 1094230-05-3)
- 4-Cyclopropyl-1,3-thiazole-5-carboxylic acid (CAS 1266822-87-0)
- 5-Cyclopropyl-1,3-thiazole-4-carboxylic acid (CAS 1701968-49-1)
- 4-Cyclopropyl-1,2,3-thiadiazole-5-carboxamide (CAS 183303-91-5)
- 1-Cyclopropyl-2-oxopyrrolidine-3-carboxylic acid (CAS 1017472-80-8)
- Methyl 2-cyclopropyl-4,5-dihydrooxazole-4-carboxylate (CAS 1344088-61-4)
- 1-Cyclopropyl-5-oxopyrrolidine-3-carboxylic acid (CAS 876716-43-7)
- Methyl 5-cyclopropyl-2,5-dihydroisoxazole-5-carboxylate (CAS 887360-91-2)
Recommended Standards
- 2-Amino-3-(2-fluorophenyl)propan-1-ol (CAS 174302-88-6)
- 1-Methoxy-3-(sulfinylamino)benzene (CAS 17420-00-7)
- 1-(3-(Methylthio)-1,2,4-triazin-5-yl)ethan-1-one (CAS 184895-81-6)
- 6,7-Dihydro-5H-pyrimido[4,5-b][1,4]thiazin-4-ol (CAS 1707563-39-0)
- trans-4-(3-Methylbenzoyl)cyclohexane-1-carboxylic acid (CAS 736136-03-1)
- 2-Amino-N-ethyl-3-methyl-N-(((S)-1-methylpyrrolidin-2-yl)methyl)butanamide (CAS 1354025-37-8)
- 2-Bromo-4-propylthiazole-5-carboxylic acid (CAS 81569-64-4)
- 2,6-bis[(4<I>S</I>)-(-)-isopropyl-2-oxazolin-2-yl]pyridine (CAS 118949-61-4)
- Venetoclax Impurity 132 (CAS 2832347-33-6)
- 1-(1-Ethyl-1H-benzo[d]imidazol-2-yl)piperidin-3-amine hydrochloride, 95% (CAS 1185310-01-3)
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- 2-(2,2-Dimethyl-4-phenyltetrahydro-2H-pyran-4-yl)acetic acid (CAS 109878-50-4)
- 2-Iodo-6,7-dihydroindolizin-8(5H)-one (CAS 1416221-39-0)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
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