4-Guanidino-N-(oxazol-2-yl)benzamide CAS 733045-69-7
| CAS No. | 733045-69-7 |
| Molecular Formula | C11H11N5O2 |
| Molecular Weight | 245.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Guanidino-N-(oxazol-2-yl)benzamide (CAS 733045-69-7), molecular formula C11H11N5O2 and molecular weight 245.24 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-Guanidino-N-(oxazol-2-yl)benzamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 245.24 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.
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.
As a certified reference material (CRM), 4-Guanidino-N-(oxazol-2-yl)benzamide 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 | C11H11N5O2 |
| Molecular Weight | 245.24 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 5 |
Related Guanidino Standards
- 4-Guanidino-N-(pyrazin-2-yl)benzamide (CAS 785013-66-3)
- 4-Guanidino-N-(pyrimidin-2-yl)benzamide (CAS 714907-42-3)
- 2-[[(Guanidino)(imino)methyl]sulfanyl]ethanesulfonic Acid-d4 (CAS 1794941-90-4)
- Ethyl2-guanidino-4-methylthiazole-5-carboxylate (CAS 7185-65-1)
- Methyl 2-guanidino-4-methylthiazole-5-carboxylate (CAS 903442-90-0)
- Ethyl 4-guanidino-1-methyl-1H-pyrrole-2-carboxylate (CAS 112990-45-1)
- 4-Guanidino-2-methoxybenzoic Acid (CAS 173731-96-9)
- 2-Guanidino-4-methylthiazole-5-carboxylic acid (CAS 216955-55-4)
Recommended Standards
- 4-[3-(Trifluoromethyl)phenyl]-4-piperidinol (CAS 2249-28-7)
- 5-Cyclopropyl-2-methyl-7-(trifluoromethyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrimidine (CAS 832739-41-0)
- 4,10,12-Trimethyl-3,5,8,10,12-pentaazatricyclo[7.4.0.0^{2,6}]trideca-1,4,6,8-tetraene-11,13-dione (CAS 405925-71-5)
- 5-Nitro-N4-(o-tolyl)pyrimidine-4,6-diamine (CAS 681271-13-6)
- Ethyl 4,5-dibromonicotinate (CAS 1009333-82-7)
- (3-Benzyl-3-azabicyclo[3.1.0]hexan-6-yl)methanamine dihydrochloride (CAS 1212066-68-6)
- Tert-butyl (R)-(1-amino-3-methylbutan-2-yl)carbamate (CAS 400652-50-8)
- 2-[5,7-Bis(trifluoromethyl)-1,8-naphthyridin-2-yl]-2-(4-bromophenyl)acetonitrile (CAS 478043-29-7)
- 1-(3-Chloro-4-methoxyphenyl)-5-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid (CAS 1264042-82-1)
- 4-Chlorothieno[3,2-d]pyrimidine-6-sulfonamide (CAS 1343729-43-0)
- Dimethyl 5-bromo-3-fluorophthalate (CAS 2222114-73-8)
- N-(4-bromophenyl)-2-(4-(4-chlorophenyl)-2-methyl-3-oxo-1,2,4-oxadiazolidin-5-yl)acetamide (CAS 478033-70-4)
- 6-Amino-[1,1'-biphenyl]-2-carboxylic acid (CAS 91718-53-5)
- Insulin Degludec Impurity 7 (CAS CATO-C4X-21577)
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