Lamivudine Impurity 34 CAS 389128-28-3
| CAS No. | 389128-28-3 |
| Molecular Formula | C18H26N2O5S |
| Molecular Weight | 382.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Lamivudine Impurity 34 (CAS 389128-28-3), a pharmacopoeial impurity reference standard (molecular formula C18H26N2O5S, MW 382.47 g/mol) used for the identification and quantification of trace impurities in APIs.
Lamivudine Impurity 34 (C18H26N2O5S) contains a flavonoid core, an amide group, a sulfone 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 presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO manufactures Lamivudine Impurity 34 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 | C18H26N2O5S |
| Molecular Weight | 382.47 g/mol |
| Purity | >95% |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Lamivudine Standards
- ent-Lamivudine (1S,2R,5S)-5-Methyl-2-isopropylcyclohexyl Ester (CAS 147126-74-7)
- Lamivudine Impurity 45 (CAS CATO-C4X-119445)
- Lamivudine EP Impurity (CAS CATO-C4X-119416)
- Lamivudine Impurity 28 (CAS 1020151-61-4)
- Lamivudine Dimer (CAS CATO-C4X-119417)
- Lamivudine Impurity 23 (CAS CATO-C4X-119423)
- Lamivudine Impurity 11 (CAS 200396-19-6)
- Lamivudine Sulfone (CAS 2250242-24-9)
Recommended Standards
- 5-oxo-5-{4-[4-(propan-2-yl)benzenesulfonyl]piperazin-1-yl}pentanoic acid (CAS 888103-33-1)
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- 5-(4-Fluorophenyl)-2-mercapto-3-phenethylthieno[2,3-d]pyrimidin-4(3h)-one (CAS 851169-52-3)
- Furathiocarb (CAS 65907-30-4)
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- Atropine Impurity 57 (CAS CATO-C4X-148957)
- Tedizolid Impurity 28 (CAS CATO-C4X-105428)
- Isoaloeresin D (CAS 181489-99-6)
- 2-(4-(4-Bromo-2-fluorobenzyl)piperazin-1-yl)ethanol (CAS 1209199-46-1)
- (1-Methyl-2-oxabicyclo[2.1.1]hexan-4-yl)methanamine hydrochloride (CAS 2287275-01-6)
- (3-Methyl-d3-amino)propionitrile 1216852-82-2 3-Methylaminopropiononitrile-d3 Methyl(2-cyanoethyl)amine-d3 N-(2-Cyanoethyl)-N-methylamine-d3 N-Methyl-|A-alaninenitrile-d3 |A-(Methylamino)propionitrile-d3 (CAS 1216852-82-2)
- Sofosbuvir Impurity 12 (CAS 863329-62-8)
- 2-(2-Amino-phenyl)-oxazole-4-carboxylic acid (CAS 1220039-54-2)
- Peptide YY (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 81858-94-8)
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