3-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-4,5-dihydroisoxazole-5-carboxylic acid CAS 907990-49-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 907990-49-2 |
| Molecular Formula | C10H13N3O3 |
| Molecular Weight | 223.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(1-ethyl-3-methyl-1H-pyrazol-4-yl)-4,5-dihydroisoxazole-5-carboxylic acid (CAS 907990-49-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C10H13N3O3. Molecular weight: 223.23 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C10H13N3O3 |
| Molecular Weight | 223.23 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 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Recommended Standards
- 3-(1,3-Dioxo-1,3,4,5,6,7-hexahydro-2H-isoindol-2-yl)propanoic acid (CAS 98711-19-4)
- 3-(1-Ethyl-5-methyl-1H-pyrazol-4-yl)-4,5-dihydroisoxazole-5-carboxylic acid (CAS 957258-38-7)
- 3-(1,3-Dioxo-1,3,3a,4,7,7a-hexahydro-isoindol-2-yl)-propionic acid (CAS 78394-45-3)
- Dehydrotrametenolic acid,16-alpha-hydroxy-3-O-acetyl- (CAS 168293-14-9)
- Ethyl 2-(1,2,3,4-tetrahydroquinolin-4-yl)acetate (CAS 76059-56-8)
- 3-Methyl-2-(4-(trifluoromethyl)phenyl)pyrrolidine (CAS 526182-73-0)
- 2-(Methylsulfonyl)naphthalene (CAS 35330-75-7)
- 7440-44-0 Carbon K 257 U 02 Acticarbone Activated carbon Activated charcoal Adsorbit AG 5 AG 3 (Adsorbent) AG 5 (Adsorbent) AK (Adsorbent) Amoco PX 21 Anthrasorb Aqua nuchar AR 3 ART 2 AU 3 BAU BG 6080 Black 140 Black pearls Calcotone Black Canesorb Carbolac Carbon-12 Carbon, colloidal Carbopol M Carbopol Z 4 Carbopol Z Extra Carbopol Extra Carbosieve Carbosorbit R Caswell No. 161 Cecarbon CF 8 CF 8 (Carbon) CLF II CMB 200 CMB 50 Coke powder Colgon BPL Colgon PCB-D Colgon PCB 12X30 Columbia LCK Conductex CUZ 3 CWN 2 Darco EINECS 231-153-3 EPA Pesticide Chemical Code 016001 Filtrasorb Filtrasorb 200 Filtrasorb 400 Grosafe HSDB 5037 Hydrodarco Irgalite 1104 Jado MA 100 (Carbon) Norit Nuchar OU-B Pelikan C 11/1431a SKG SKT SKT (adsorbent) SU 2000 Suchar 681 Supersorbon S 1 Supersorbon IV Watercarb Witcarb 940 XE 340 XF 4175L CCRIS 8681 EC 231-153-3 Graphite, synthetic UN1362 (CAS 7440-44-0)
- (1-(2-Bromo-5-methoxybenzyl)cyclopropyl)methanamine (CAS 1487215-16-6)
- Semaglutide impurity 48 (CAS CATO-C4X-222648)
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