2,2'-(1,4-Phenylene)bis(benzo[d]oxazol-5-amine) CAS 13752-53-9
| CAS No. | 13752-53-9 |
| Molecular Formula | C20H14N4O2 |
| Molecular Weight | 342.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2,2'-(1,4-Phenylene)bis(benzo[d]oxazol-5-amine) (CAS 13752-53-9), molecular formula C20H14N4O2 and molecular weight 342.35 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, 2,2'-(1,4-Phenylene)bis(benzo[d]oxazol-5-amine) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 342.35 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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.
Physical & Chemical Properties
| Molecular Formula | C20H14N4O2 |
| Molecular Weight | 342.35 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.) | 1960 |
| Nitrogen Atoms | 4 |
Related Phenylene Standards
- 2,2'-(1,4-Phenylene)bis(benzo[d]oxazol-6-amine) (CAS 94533-96-7)
- 2,2'-(2-Methyl-1,3-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 849402-14-8)
- 1,1'-(1,4-Phenylene)bis(N-(4-methoxyphenyl)methanimine) (CAS 3525-51-7)
- 1,1-(1,4-Phenylene)diadamantane (CAS 10509-15-6)
- 1,4-Phenylene bis(4-aminobenzoate) (CAS 22095-98-3)
- 1,2-Phenylene bis(morpholine-4-carboxylate) (CAS 510734-16-4)
- 2,2'-(1,4-Phenylene)bis(3-phenylacrylonitrile) (CAS 13707-95-4)
- 5-Methyl-1,3-phenylene dibenzoate (CAS 104311-36-6)
Recommended Standards
- 4-(4-(3-(Pyridin-2-yl)-1H-pyrazol-4-yl)pyridin-2-yl)benzoic acid (CAS 1356614-53-3)
- 5-{2-[methyl(phenyl)amino]-2-oxoethyl}-4-oxo-5,6,7,8-tetrahydro-4H-pyrazolo[1,5-a][1,4]diazepine-2-carboxylic acid (CAS 1443978-32-2)
- 2-(6,6-Dimethyl-1-(4-nitrophenyl)-4-oxo-4,5,6,7-tetrahydro-1H-indol-2-yl)acetic acid (CAS 1355233-88-3)
- 2-Amino-4-(benzo[d][1,3]dioxol-5-yl)-4H-benzo[h]chromene-3-carbonitrile (CAS 149550-67-4)
- Ethyl (1E)-N-Hydroxyethanimidate (CAS 20703-41-7)
- (4-Isopropyl-2-methoxyphenyl)boronic acid (CAS 313667-04-8)
- 593-04-4 Boron trifluoride butyl ether Boron trifluoride butyl etherate Boron trifluoride dibutyl etherate Dibutyl ether-boron trifluoride Trifluoroboron dibutyl etherate (CAS 593-04-4)
- 8-Methylquinoline-5-boronic Acid Pinacol Ester (CAS 1366740-47-7)
- (3-Chloro-[2,3'-bipyridin]-5-yl)boronic acid (CAS 2225175-36-8)
- 7-[5-(2,4-Dichlorophenyl)furan-2-yl]-2-methylpyrazolo[1,5-a]pyrimidine (CAS 861209-74-7)
- 4-Chloro-2-fluoro-5-nitrobenzoyl chloride (CAS 947311-91-3)
- N-Cyclopropyl-N′-hydroxyguanidine hydrochloride (CAS 551935-92-3)
- 4-((2-Hydroxy-3-methoxybenzylidene)amino)-3-(2-methoxyphenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 478256-49-4)
- Semaglutide impurity 67 (CAS CATO-C4X-222667)
Why CATO?
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