Isoquinoline-1,3,4(2H)-trione CAS 521-73-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 521-73-3 |
| Molecular Formula | C9H5NO3 |
| Molecular Weight | 175.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Isoquinoline-1,3,4(2H)-trione (CAS 521-73-3) is a pharmaceutical standards certified reference material from CATO. Molecular formula: C9H5NO3. Molecular weight: 175.14 g/mol. ISO 17034 accredited production ensures traceable purity and reliable analytical results.
Physical & Chemical Properties
| Molecular Formula | C9H5NO3 |
| Molecular Weight | 175.14 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Isoquinoline Standards
- isoquinoline-3-carboxylic acid (CAS 6624-49-3)
- Isoquinoline-4-carboxylic Acid (CAS 7159-36-6)
- Isoquinoline-7-carboxylic acid (CAS 221050-96-0)
- Isoquinoline-4-boronic Acid (CAS 192182-56-2)
- Isoquinoline-6-carboxamide (CAS 1158754-94-9)
- Isoquinoline-7-carboxamide (CAS 1158755-26-0)
- isoquinoline-5-carboxamide (CAS 1337880-73-5)
- Isoquinoline-8-carboxamide (CAS 1337881-25-0)
Recommended Standards
- Imidazo[4,5,1-hi]indazole-2,5(1H,4H)-dione (CAS 65325-63-5)
- Pyrido[2,3-b]pyrazine-2-carboxylic acid (CAS 914637-60-8)
- furo[2',3':4,5]pyrrolo[1,2-d][1,2,4]triazin-8(7H)-one (CAS 91206-30-3)
- 5-Chloro-4-hydroxy-3-(trifluoromethyl)phenylboronic acid (CAS 2121511-51-9)
- [4-(but-3-yn-2-yloxy)phenyl]methanol (CAS 1803571-00-7)
- 5-Bromo-6-(difluoromethyl)pyridin-2-amine (CAS 1805958-87-5)
- 2-Methoxy-4-(methoxymethyl)phenol (CAS 5533-03-9)
- 3-Hydroxy-5-(methoxycarbonyl)benzoic Acid (CAS 167630-15-1)
- 3-Amino-1-(3-(trifluoromethyl)phenyl)propan-1-ol (CAS 1447967-06-7)
- endo-Arg30-Semaglutide (CAS CATO-C4X-2226281)
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