Isoquinoline-5,8-dione CAS 50-46-4
| CAS No. | 50-46-4 |
| Molecular Formula | C9H5NO2 |
| Molecular Weight | 159.14 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 Isoquinoline-5,8-dione.
Isoquinoline-5,8-dione (CAS 50-46-4), molecular formula C9H5NO2 and molecular weight 159.14 g/mol, is a CATO reference standard with documented purity and traceability.
Isoquinoline-5,8-dione (C9H5NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Isoquinoline-5,8-dione 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 | C9H5NO2 |
| Molecular Weight | 159.14 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Isoquinoline Standards
- Isoquinoline-2(1H)-carbaldehyde (CAS 208348-23-6)
- Isoquinoline-1,6-diamine (CAS 1147347-51-0)
- Isoquinoline-7,8-diamine (CAS 120546-60-3)
- Isoquinoline-1,5-diamine (CAS 1245710-67-1)
- Isoquinoline-5,6-diamine (CAS 140192-89-8)
- Isoquinoline-1,3-diamine (CAS 1955-65-3)
- Isoquinoline-1,4-diamine (CAS 78886-52-9)
- Isoquinoline-1,7-diamine (CAS 244219-96-3)
Recommended Standards
- Isobenzofuro[5,6-d]isoxazole (CAS 267-37-8)
- Isoxazolo[5,4-b]pyridine-3-acetonitrile (CAS 58035-53-3)
- Isobenzofuro[5,4-d]oxazole (CAS 214489-59-5)
- L-trans-Pyrrolidine-2,4-dicarboxylic acid (CAS 64769-66-0)
- (4R,5S)-Methyl 3-benzyl-4-(((tert-butyldimethylsilyl)oxy)methyl)-5-isopropyloxazolidine-4-carboxylate (CAS 145451-93-0)
- 2,6-Dimethyl-3-(5-phenyl-1,3,4-oxadiazol-2-yl)-4H-pyran-4-one (CAS 61820-57-3)
- 3-Hydroxyazetidine-3-carbonitrile (CAS 1527935-38-1)
- (1R)-3,3'-Bis(4-chlorophenyl)[1,1'-binaphthalene]-2,2'-diol (CAS 851615-05-9)
- 1-(2-Bromo-4-fluorophenyl)cyclopropan-1-ol (CAS 1248951-59-8)
- Methyl 7-chloro-4-oxo-1,4-dihydroquinoline-2-carboxylate (CAS 5347-19-3)
- 2-((((1-Propyl-1H-pyrazol-5-yl)methyl)amino)methyl)benzoic acid hydrochloride (CAS 1856056-23-9)
- 2-((4-Methylpyrimidin-2-yl)thio)acetamide (CAS 74537-76-1)
- Drostanolone Propionate (CAS 521-12-0)
- Palmitoyl Tripeptide-1 HCl (CAS 2757690-14-3)
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