Aztreonam impurity 98 CAS 71780-86-4
| CAS No. | 71780-86-4 |
| Molecular Formula | C6H8ClNO4 |
| Molecular Weight | 193.59 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 193.59 g/mol gives Aztreonam impurity 98 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Aztreonam impurity 98 (CAS 71780-86-4), a pharmacopoeial impurity reference standard (molecular formula C6H8ClNO4, MW 193.59 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, Aztreonam impurity 98 is typically white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 193.59 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.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Aztreonam impurity 98 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H8ClNO4 |
| Molecular Weight | 193.59 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Aztreonam Standards
- Aztreonam Impurity 1 (CAS 80082-65-1)
- Aztreonam Impurity 34 (CAS 80582-09-8)
- Aztreonam impurity 70 (CAS CATO-C4X-152270)
- Aztreonam impurity 69 (CAS CATO-C4X-152269)
- Aztreonam impurity 74 (CAS CATO-C4X-152274)
- Aztreonam impurity 76 (CAS CATO-C4X-152276)
- Aztreonam Impurity 4 (CAS 80999-51-5)
- Aztreonam impurity 103 (CAS 2304883-18-7)
Recommended Standards
- Ceftazidime Impurity 28 (CAS 50382-11-1)
- (Z)-Cefazolin Impurity 44 (CAS 66338-95-2)
- 8-chloro-1,4,5,7,12-pentaazatricyclo[7.3.0.0²,⁶]dodeca-2(6),3,7,9,11-pentaene (CAS 2706602-35-7)
- 3-(3-Chloroprop-1-yn-1-yl)-5-fluorobenzonitrile (CAS 1507756-33-3)
- Cefditoren Impurity 10 (CAS CATO-C4X-135810)
- Venetoclax Impurity 119 (CAS CATO-C4X-2495119)
- Lemborexant Impurity 32 (CAS CATO-C4X-304232)
- Azepan-3-amine (CAS 69154-03-6)
- N4,7-Diethyl-6-imino-6,7-dihydroisoxazolo[5,4-b]pyridine-3,4-diamine (CAS 737754-41-5)
- N~2~-butyl-3-chloro-N~2~-methyl-1,2-benzenediamine (CAS 1019117-81-7)
- 4-(bromomethyl)-6-(trifluoromethyl)pyrimidine (CAS 1630907-33-3)
- Ethyl 4-hydroxy-2,6,7-trimethylquinoline-3-carboxylate (CAS 88960-39-8)
- 5-Methylimidazo[1,2-a]pyridine-2-carboxamide (CAS 88751-04-6)
- Polymyxin B nonapeptide TFA (CAS 2220175-42-6)
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