3-(Pent-3-en-1-yl)-1H-pyrazol-5(4H)-one CAS 264209-19-0
| CAS No. | 264209-19-0 |
| Molecular Formula | C8H12N2O |
| Molecular Weight | 152.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
3-(Pent-3-en-1-yl)-1H-pyrazol-5(4H)-one (CAS 264209-19-0) is a high-purity analytical reference standard with the molecular formula C8H12N2O and a molecular weight of 152.19 g/mol.
Based on its molecular formula C8H12N2O, 3-(Pent-3-en-1-yl)-1H-pyrazol-5(4H)-one contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 152.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 3-(Pent-3-en-1-yl)-1H-pyrazol-5(4H)-one 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 | C8H12N2O |
| Molecular Weight | 152.19 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 |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Pent Standards
- Pent-4-en-1-ylcyclohexane (CAS 5729-54-4)
- 3-Methyl-5-(pent-1-yn-1-yl)-4,5-dihydroisoxazole (CAS 7157-79-1)
- 2-(Pent-4-en-1-yl)cyclopentan-1-ol (CAS 65727-67-5)
- Pent-4-ene-1-sulfonamide (CAS 245368-50-7)
- 2-(Pent-2-yn-1-yl)cyclopent-2-enone (CAS 29119-44-6)
- 2-(Pent-4-en-1-yl)-1,3-dioxane (CAS 80634-89-5)
- 2-(Pent-4-en-1-yl)tetrahydrofuran-2-ol (CAS 85362-51-2)
- Pent-1-en-3-yl isobutyrate (CAS 945529-33-9)
Recommended Standards
- 3-(Methoxymethyl)benzene-1,2-diamine (CAS 916325-86-5)
- 3-(Pyrrolidin-1-yl)propanoyl cyanide (CAS 344772-79-8)
- 3-(Furan-2-yl)-5-methylpyrazolidine (CAS 74921-66-7)
- 3,3-Dicyclopropylprop-2-enoic acid (CAS 37520-24-4)
- (R)-2-Amino-3,3-difluoropropan-1-ol hydrochloride (CAS 2055849-13-1)
- N-(5-Methyl-1,3,4-thiadiazol-2-yl)-3-(pyrrolidin-1-ylsulfonyl)benzamide (CAS 851452-51-2)
- 2-(4-Aminophenoxy)-1-(piperidin-1-yl)ethanone (CAS 76870-14-9)
- (2-Methoxy-4-(4-methylpiperazin-1-yl)phenyl)boronic acid (CAS 2225170-62-5)
- (2-Oxopropyl)phosphonic Acid Dimethyl Ester 4202-14-6 Acetonylphosphonic Acid Dimethyl Ester Dimethyl (2-Oxopropyl)phosphonate Dimethyl Acetonylphosphonate O0208 (CAS 4202-14-6)
- Omadacycline Impurity 35 (CAS CATO-C4X-285735)
- (R)-1-Methyl-1,2,3,4-tetrahydroisoquinoline (CAS 84010-66-2)
- Chlorpheniramine Impurity 37 (CAS CATO-C4X-118837)
- 3-(3,5-Difluorophenyl)propiolic acid (CAS 935475-83-5)
- Hexapeptide-11 (CAS 161258-30-6)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com