Isoxazolo[4,3-e]pyrazolo[1,5-a]pyrimidine CAS 149626-22-2
| CAS No. | 149626-22-2 |
| Molecular Formula | C7H4N4O |
| Molecular Weight | 160.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), Isoxazolo[4,3-e]pyrazolo[1,5-a]pyrimidine 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.
Isoxazolo[4,3-e]pyrazolo[1,5-a]pyrimidine (CAS 149626-22-2), molecular formula C7H4N4O and molecular weight 160.13 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, Isoxazolo[4,3-e]pyrazolo[1,5-a]pyrimidine (C7H4N4O) contains an amide group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 160.13 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H4N4O |
| 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 |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | 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.) | 1999 |
| Nitrogen Atoms | 4 |
Related Isoxazolo Standards
- 2H-Isoxazolo[5,4-d]pyrazolo[3,4-b]pyridine (CAS 106990-55-0)
- 1H-Isoxazolo[3,4-d]pyrazolo[3,4-b]pyridine (CAS 107457-74-9)
- 2H-Isoxazolo[5,4-b]pyrazolo[4,3-e]pyridine (CAS 404345-61-5)
- 2H-Isoxazolo[5,4-d]azonine (CAS 154099-32-8)
- Isoxazolo[4',5':3,4]benzo[1,2-c][1,2,5]oxadiazole (CAS 126877-68-7)
- Isoxazolo[5',4':3,4]benzo[1,2-c][1,2,5]oxadiazole (CAS 133818-22-1)
- 1H-Isoxazolo[5,4-g]indazole (CAS 173894-82-1)
- 2H-Isoxazolo[5,4-b]pyrrolo[2,3-e]pyridine (CAS 952702-87-3)
Recommended Standards
- Phthalazine-5,8-dione (CAS 147088-71-9)
- Quinoxaline-5,8-dione (CAS 15250-38-1)
- 2,6-Diformylisonicotinonitrile (CAS 1393550-72-5)
- 5-Hydroxybenzo[d]oxazole-2-carbonitrile (CAS 1526283-44-2)
- (9H-fluoren-9-yl)methyl (R)-(1-(methoxy(methyl)amino)-1-oxo-3-(tritylthio)propan-2-yl)carbamate (CAS 370857-83-3)
- 5-Bromo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazolo[3,4-c]pyridine (CAS 2201100-19-6)
- Docosyl 2,3-dihydroxybenzoate (CAS 1238837-50-7)
- 1-(3-Methoxyphenoxy)propan-2-amine (CAS 6449-45-2)
- N,N-dimethylpyrazin-2-amine (CAS 5214-29-9)
- PBDT-TPD (CAS 1231160-89-6)
- [(3β)-Cholesta-5,24-dien-3-yloxy](1,1-dimethylethyl)dimethylsilane (CAS 220150-72-1)
- (S)-(1-Ethylpyrrolidin-2-yl)methanol (CAS 35120-34-4)
- 5-Amino-4-benzothiazol-2-yl-1-(2-morpholin-4-yl-ethyl)-1,2-dihydro-pyrrol+ (CAS 459213-78-6)
- Allo-Thr7-Tirzepatide (CAS CATO-CPTD788933)
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