Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) CAS CATO-C4X-2226244
| CAS No. | CATO-C4X-2226244 |
| Molecular Formula | C40H36N4O7 |
| Molecular Weight | 684.74 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) (CAS CATO-C4X-2226244) is a certified pharmaceutical impurity reference standard with the molecular formula C40H36N4O7 and a molecular weight of 684.74 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 684.74 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 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 Semaglutide impurity 244(Fmoc-His(Fmoc)-Aib-OH) 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 | C40H36N4O7 |
| Molecular Weight | 684.74 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 25.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Semaglutide Standards
- Semaglutide Impurity 246 (CAS CATO-C4X-2226246)
- Semaglutide Impurity 18 (CAS 1671100-14-3)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
- Semaglutide impurity 86 (CAS CATO-C4X-222686)
- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
- Semaglutide impurity 69 (CAS CATO-C4X-222669)
- Semaglutide impurity 247 (CAS CATO-C4X-2226247)
Recommended Standards
- 3,5-Bis[2-(Fmoc-amino)ethoxy]benzoic acid (CAS 1185295-67-3)
- 2�-Deoxy-5�-O-tritylthymidine-3�-O-N,N-diisopropylaminocyanoethylphosphoramidite (CAS 144845-97-6)
- Cefamandole Impurity 25 (CAS CATO-C4X-122125)
- (4R,5R,11R,12R)-4,5,11,12-Tetraphenyl-3,6,10,13-tetraaza-1,8(1,3)-dibenzenacyclotetradecaphane-2,7,9,14-tetraone (CAS 1253421-84-9)
- Nafamostat Impurity 13 (CAS CATO-C4X-133213)
- Insulin Degludec Impurity 28 (CAS CATO-C4X-215728)
- Ursodeoxycholic Acid EP Impurity B (CAS 81-25-4)
- N-Allyl-4-amino-3-phenyl-2-thioxo-2,3-dihydrothiazole-5-carboxamide (CAS 519011-71-3)
- Methyl (1S,3R,4R,5S)-3-acetoxy-5-azido-4-hydroxycyclohexane-1-carboxylate (CAS 927881-61-6)
- Ibuprofen impurity 127 (CAS 105959-56-6)
- Methyl (s)-3-amino-3-(3,5-dichlorophenyl)propanoate (CAS 1213081-03-8)
- 2-(Chloromethyl)-4-(4-fluorophenyl)thiazole (CAS 170881-68-2)
- N-(2-Chlorophenyl)-1,3-propanesultam (CAS 71703-11-2)
- 81988-89-8 UH11FDQ454 Ramoplanin A(sub 3) Ramoplanin A3 (S)-2-(3-Chloro-4-hydroxyphenyl)-N-(N(sup 2)-((2Z,4Z)-8-methyl-2,4-nonadienoyl)-(S)-asparaginyl-(2S,3S)-3-hydroxyasparaginyl-(R)-2-(p-hydroxyphenyl)glycyl-(R)-ornithyl-(2R,3R)-allothreonyl-2-(p-hydroxyphenyl)glycyl-2-(p-hydroxyphenyl)glycyl-(2S,3S)-allothreonyl-(S)-phenylalanyl-(R)-ornithyl-(S)-2-(p-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycyl-(2R,3R)-allothreonyl-(S)-2-(p-hydroxyphenyl)glycylglycyl-(S)-leucyl-(R)-alanyl)glycine psi1-lactone Ramoplanin A 1 (peptide moiety), 1-(N(sup 2)-methyl-1-oxo-2,4-nonadienyl)-L-asparagine)-11-(L-2-(4-((2-O-alpha-D-mannopyranosyl-alpha-D-mannopyranosyl)oxy)phenyl)glycine)-, (Z,Z)- UNII-UH11FDQ454 (CAS 81988-89-8)
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