1,3-Bis(2-bromophenyl)urea CAS 175278-34-9
| CAS No. | 175278-34-9 |
| Molecular Formula | C13H10Br2N2O |
| Molecular Weight | 370.04 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.
1,3-Bis(2-bromophenyl)urea (CAS 175278-34-9) is a high-purity analytical reference standard with the molecular formula C13H10Br2N2O and a molecular weight of 370.04 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, bromine substitution, 1,3-Bis(2-bromophenyl)urea is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 370.04 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 1,3-Bis(2-bromophenyl)urea 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 | C13H10Br2N2O |
| Molecular Weight | 370.04 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2007 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bis Standards
- 3-(2-Bromophenyl)-5-(2,4-dichlorophenyl)-1,2,4-oxadiazole (CAS 1000339-26-3)
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- 3-(4-Bromophenyl)-5-(2,4-dichlorophenyl)-1,2,4-oxadiazole (CAS 381178-19-4)
- 1,2-Bis(4-bromophenyl)ethane-1,2-diamine (CAS 1199783-04-4)
- 3-(3-bromophenyl)-N-[3-(trifluoromethyl)phenyl]acrylamide (CAS 61592-74-3)
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- N-(5-(4-Bromophenyl)-1,3,4-oxadiazol-2-yl)-3-phenylacrylamide (CAS 131548-11-3)
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Recommended Standards
- 3,3’-Dibromobenzoin (CAS 164403-02-5)
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- 5-Bromo-3-((3,4-dichlorophenyl)imino)indolin-2-one (CAS 61294-13-1)
- (2-Bromo-5-methoxyphenyl)(4-bromophenyl)methanone (CAS 890098-03-0)
- 1-methyl-1H-imidazo[4,5-c]pyridine-4-carboxylic acid (CAS 1078168-26-9)
- Loratadine Epoxide (CAS 1189694-51-6)
- 4-(Propan-2-yl)-1,2,5-oxadiazol-3-amine (CAS 1040020-08-3)
- Tetrabenazine Impurity 49 (CAS CATO-C4X-274849)
- Ethyl 2-(3-fluoro-4-methylphenyl)acetate (CAS 1256479-06-7)
- Cyclopentanecarboximidamide xhydrochloride (CAS 477904-81-7)
- O-(4-Nitrobenzoyl)hydroxylamine 35657-36-4 MFCD11976095 SY029700 (CAS 35657-36-4)
- 2-(Aminomethyl)-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-acetic acid (CAS 1806068-74-5)
- 2-Chloro-N-(2,4-dimethylphenyl)-2-phenylacetamide (CAS 1094700-27-2)
- Semaglutide Impurity 166 (CAS 1395881-03-4)
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