1-(5,7-Diphenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)pyrrolidine-2,5-dione CAS 171668-01-2
| CAS No. | 171668-01-2 |
| Molecular Formula | C21H17N5O2 |
| Molecular Weight | 371.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1-(5,7-Diphenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)pyrrolidine-2,5-dione (CAS 171668-01-2) is a high-purity analytical reference standard with the molecular formula C21H17N5O2 and a molecular weight of 371.39 g/mol.
1-(5,7-Diphenyl-1,7-dihydro-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)pyrrolidine-2,5-dione (C21H17N5O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H17N5O2 |
| Molecular Weight | 371.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2006 |
| Nitrogen Atoms | 5 |
Related Diphenyl Standards
- 1,1-Diphenyl-4-(pyrrolidin-1-yl)but-2-yn-1-yl dihydrogen phosphate (CAS 57248-89-2)
- 2,2-Diphenyl-N-(4-(trifluoromethoxy)phenyl)acetamide (CAS 425372-89-0)
- (S)-5,6-Diphenyl-N-((tetrahydrofuran-2-yl)methyl)furo[2,3-d]pyrimidin-4-amine (CAS 873305-35-2)
- 5,5-Diphenyl-3-((p-tolylamino)methyl)imidazolidine-2,4-dione (CAS 983-01-7)
- 1,3-Diphenyl-1-(3-phenyl-1,2,4-thiadiazol-5-yl)guanidine (CAS 61997-65-7)
- 4-(1,3-Diphenyl-4,5-dihydro-1H-pyrazol-5-yl)-N,N-diethylaniline (CAS 88439-40-1)
- 1-(5,7-Diphenyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)pyrrolidine-2,5-dione (CAS 836640-55-2)
- Ethyl 2,4-diphenyl-6-(pyrrolidin-1-yl)pyrimidine-5-carboxylate (CAS 823795-22-8)
Recommended Standards
- (2R,3R,4S,5R)-2-(6-Amino-2-phenethyl-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 163163-46-0)
- 4,4'-(2-(4-Nitrophenyl)-1H-imidazole-4,5-diyl)dianiline (CAS 171861-33-9)
- 5-[(9-Anthrylmethyl)amino]isophthalic Acid (CAS 1612229-22-7)
- 2-[2-(2-Pyridinyl)-5-oxazolyl]-6-[5-(2-pyridinyl)-2-oxazolyl]pyridine (CAS 1835305-09-3)
- 3-(5-Hydroxy-1,2,4-triazin-6-yl)propanoic acid (CAS 1023817-46-0)
- Hydroxyzine Impurity 1 DiHCl (CAS 85293-16-9)
- 2-Boronobenzoic acid (CAS 149105-19-1)
- 1-(5-Bromothiophen-2-yl)-N-((4-methylmorpholin-2-yl)methyl)methanamine (CAS 1280931-35-2)
- 3-cyclohexylpropanamide (CAS 4361-29-9)
- 3-(1,3-Dioxolan-2-yl)-1-(4-fluorophenyl)propan-1-one (CAS 116332-55-9)
- N-(3-Amino-2-methylphenyl)-3-(isopentyloxy)-benzamide (CAS 1020056-76-1)
- 2-(Acryloyloxy)ethyl 3-oxobutanoate (CAS 21282-96-2)
- Cephalexin Impurity 40 (CAS CATO-C4X-126140)
- Galanin-Like Peptide (porcine) trifluoroacetate salt (CAS 245114-96-9)
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