Phthalazine-5,8-dione CAS 147088-71-9
| CAS No. | 147088-71-9 |
| Molecular Formula | C8H4N2O2 |
| Molecular Weight | 160.13 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 Phthalazine-5,8-dione.
Phthalazine-5,8-dione (CAS 147088-71-9) is a high-purity analytical reference standard with the molecular formula C8H4N2O2 and a molecular weight of 160.13 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Phthalazine-5,8-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 160.13 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.
As a certified reference material (CRM), Phthalazine-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 | C8H4N2O2 |
| Molecular Weight | 160.13 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 DMSO, DMF, methanol |
| 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.) | 1999 |
| Nitrogen Atoms | 2 |
Related Phthalazine Standards
- Phthalazine-1,4-diamine (CAS 17987-70-1)
- Phthalazine-5,8-diamine (CAS 502584-74-9)
- Phthalazine-5-carbaldehyde (CAS 1781708-97-1)
- Phthalazine-6,7-diol (CAS 150256-28-3)
- Phthalazine-1(2H)-thione (CAS 16015-46-6)
- Phthalazine-5-carbonitrile (CAS 1891253-75-0)
- Phthalazine-1-carbonitrile (CAS 7694-81-7)
- Phthalazine-6-carbonitrile (CAS 551935-82-1)
Recommended Standards
- 2,6-Diformylisonicotinonitrile (CAS 1393550-72-5)
- Isoxazolo[4,3-e]pyrazolo[1,5-a]pyrimidine (CAS 149626-22-2)
- 4,6-Diformylpicolinonitrile (CAS 1393531-52-6)
- Quinoxaline-5,8-dione (CAS 15250-38-1)
- Tert-butyl 8-(methylamino)-2-azaspiro[4.5]Decane-2-carboxylate (CAS 1793108-44-7)
- 1-Bromohexadecan-2-one (CAS 21436-52-2)
- 2-Cyclopentene-1-acetic acid (CAS 13668-61-6)
- Methyl 4-((2-((tert-butoxycarbonyl)amino)ethyl)amino)-3-nitrobenzoate (CAS 1198093-70-7)
- 2-(5-Bromo-3-methoxypyridin-2-yl)acetic acid (CAS 1211540-20-3)
- (S)-MorfPhos (CAS 185449-81-4)
- Ketoprofen Impurity 30 (CAS CATO-C4X-147130)
- 4-(2H-1,3-Benzodioxol-5-yl)-2-{[(2-fluorophenyl)methyl]sulfanyl}-1H,4H,5H-indeno[1,2-d]pyrimidin-5-one (CAS 861211-16-7)
- 5-(4-Chlorophenyl)imidazolidine-2,4-dione (CAS 6212-32-4)
- Cholecystokinin Octapeptide (1-3) (desulfated) H-Asp-Tyr-Met-OH (CAS 121880-94-2)
Why CATO?
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