1-(6-(Cyclopentylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-ethyl-1H-pyrazole-4-carboxamide CAS 920974-60-3
| CAS No. | 920974-60-3 |
| Molecular Formula | C21H28N8O5 |
| Molecular Weight | 472.50 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.
1-(6-(Cyclopentylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-ethyl-1H-pyrazole-4-carboxamide (CAS 920974-60-3), molecular formula C21H28N8O5 and molecular weight 472.50 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, 1-(6-(Cyclopentylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-ethyl-1H-pyrazole-4-carboxamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 472.50 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).
As a certified reference material (CRM), 1-(6-(Cyclopentylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-ethyl-1H-pyrazole-4-carboxamide 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 | C21H28N8O5 |
| Molecular Weight | 472.50 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 8 |
Related Cyclopentylamino Standards
- 1-(6-(Cyclopentylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-1H-pyrazole-4-carboxamide (CAS 915097-44-8)
- 2-[4-(Cyclopentylamino)-3-hydroxyphenyl]-3-hydroxybenzo[h]chromen-4-one (CAS 1373232-43-9)
- Methyl 1-(2-(cyclopentylamino)-2-oxoethyl)-3,6-dicyclopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1018051-53-0)
- 4-((Cyclopentylamino)methyl)-N-((4-ethylmorpholin-2-yl)methyl)benzenesulfonamide (CAS 1336912-28-7)
- 4-((Cyclopentylamino)methyl)-N-(1-(cyclopropylmethyl)pyrrolidin-3-yl)benzenesulfonamide (CAS 1336912-44-7)
- 1,5-Bis(cyclopentylamino)anthracene-9,10-dione (CAS 719306-64-6)
- 1,8-Bis(cyclopentylamino)anthracene-9,10-dione (CAS 824951-81-7)
- 1-(2-(Cyclopentylamino)-2-oxoethyl)-3,6-dicyclopropyl-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 1018142-42-1)
Recommended Standards
- 1-(6-(Cyclohexylamino)-9-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-2-yl)-N-methyl-1H-pyrazole-4-carboxamide (CAS 915097-60-8)
- 3-(2-(((4-Carbamoylphenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoic acid (Dabigatran Impurity) (CAS 2417628-79-4)
- Ibrutinib M25, 98% (CAS 1839090-60-6)
- 5-(Benzenesulfonyl)-2-phenyl-4-{[3-(trifluoromethyl)phenyl]sulfanyl}pyrimidine (CAS 478081-00-4)
- N,N-diethyl-3-(piperidin-4-yl)propanamide (CAS 1249844-79-8)
- (2R,3S,4R,5R)-2-(Hydroxymethyl)-5-(6-(4-nitrophenoxy)-9H-purin-9-yl)tetrahydrofuran-3,4-diol (CAS 136035-17-1)
- 1-(2,3-Dihydro-1H-pyrrol-1-yl)piperazine (CAS 116143-29-4)
- Methyl (6-chloro-2-methylpyrimidin-4-yl)glycinate (CAS 1250513-70-2)
- 3.5-Dimethyl octane (CAS 15869-93-9)
- Tert-butyl 8-amino-4,4-difluoro-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2306275-45-4)
- LAUROLITSINE (CAS 5890-18-6)
- 2-(Ethylamino)-4-(3-methyl-1h-pyrazol-1-yl)butanamide (CAS 1342036-88-7)
- (S)-Methyl 2-(2-chlorophenyl)-2-(((4-nitrophenyl)sulfonyl)oxy)acetate (CAS 223123-80-6)
- (Pro30,Tyr32,Leu34)-Neuropeptide Y (28-36) (CAS 161650-01-7)
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