1-(Pyridin-4-yl)pyrazolidine-3,5-dione CAS 820238-79-7
| CAS No. | 820238-79-7 |
| Molecular Formula | C8H7N3O2 |
| Molecular Weight | 177.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H7N3O2, 1-(Pyridin-4-yl)pyrazolidine-3,5-dione contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 177.16 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
1-(Pyridin-4-yl)pyrazolidine-3,5-dione (CAS 820238-79-7), molecular formula C8H7N3O2 and molecular weight 177.16 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H7N3O2 |
| Molecular Weight | 177.16 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 3 |
Related Pyridin Standards
- 5-(Pyridin-3-yl)imidazolidine-2,4-dione (CAS 101420-65-9)
- (3-pyridin-3-yl-1,2,4-oxadiazol-5-yl)methanol (CAS 1119451-10-3)
- 3-(pyridin-4-ylmethyl)-4,5-dihydro-1,2,4-oxadiazol-5-one (CAS 1248700-20-0)
- (3-(Pyridin-2-yl)-1,2,4-oxadiazol-5-yl)methanol (CAS 187970-01-0)
- (3-(Pyridin-4-yl)-1,2,4-oxadiazol-5-yl)methanol (CAS 857653-94-2)
- 1-(Pyridin-2-yl)pyrazolidine-3,5-dione (CAS 820238-49-1)
- 5-(Pyridin-4-yl)imidazolidine-2,4-dione (CAS 52094-68-5)
- 1-(Pyridin-2-yl)cyclobutane-1-carboxylic acid (CAS 1159632-71-9)
Recommended Standards
- 1,2,3-Benzotriazol-2-ylacetic acid (CAS 4144-68-7)
- 1-(6-Hydroxypyrazolo[1,5-b]pyridazin-3-yl)ethanone (CAS 551920-26-4)
- 1,3-Dioxo-1H,2H,3H,5H,6H,7H-pyrrolo[1,2-c]pyrimidine-4-carbonitrile (CAS 790271-42-0)
- N9-Acetyl Adenine (CAS 6743-09-5)
- 2-Methoxybenzaldehyde oxime (CAS 29577-53-5)
- Ethyl 5-acetyl-3-methylisoxazole-4-carboxylate (CAS 129663-13-4)
- 1-(4-(Benzo[d]thiazol-2-yl)piperazin-1-yl)-2-phenylethan-1-one (CAS 681158-23-6)
- 5'-Amino-[2,3'-bipyridin]-6'(1'H)-one (CAS 79611-45-3)
- Ethyl 3-(1H-pyrrol-2-yl)acrylate (CAS 90610-08-5)
- Ethyl 2-(N-(4-bromophenyl)-2-((3-(m-tolyl)-1H-1,2,4-triazol-5-yl)thio)acetamido)acetate (CAS 332158-81-3)
- ((2R,3R,4R,5R)-4-Bromo-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-3-((methylsulfonyl)oxy)tetrahydrofuran-2-yl)methyl benzoate (CAS 165047-01-8)
- N-Trityl Candesartan Methyl Ester Methoxy Analogue (CAS 1797136-91-4)
- H-Cys(Acm)-OH · HCl (CAS 28798-28-9)
- Liraglutide Impurity 10 TFA Salt (CAS CATO-C4X-199210)
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