Stable isotope standard for analytical research and method development.
- Module Type
- Stable Isotope Standards
- Category
- Drugs & TDM
- CAS
- 90-34-6
- Unlabeled CAS
- 90-34-6
- PubChem CID
- 49849548
- Molecular Formula
- C14[13C]H18D3N3O
- Molecular Weight
- 263.36
AI Isotope Property & Application AnalysisShowHide
Isotope Summary
- Labels
- D3, 13C
- Labeled atoms
- 4
- Isotope positions
- Confirmed in structure
- Calculation reliability
- High, based on explicit isotope structure
Mass & MS Parameters
- Unlabeled exact mass
- 259.168462 Da
- Labeled exact mass
- 263.190647 Da
- Exact mass shift
- 4.022185 Da
- Nominal mass shift
- 4
| Ion | m/z | Status |
|---|---|---|
| [M+H]+ | 264.197924 | Theoretical |
| [M+Na]+ | 286.179865 | Theoretical |
| [M+NH4]+ | 281.22447 | Theoretical |
| [M-H]- | 262.183371 | Theoretical |
Label Stability
- Overall
- Moderate risk
- Calculation reliability
- Medium, some information should be confirmed
- Carbon-bound deuterium is evaluated by local chemical environment; isotope effects should still be checked experimentally.
Internal Standard Suitability
- Rating
- Medium
- Chromatographic similarity
- Possible isotope effect
- Natural isotope overlap
- Low
- Exact mass separation is 4.022185 Da; MS channel separation should be verified in the final method.
- The unlabeled parent mass was derived from the isotope structure because a curated parent structure was not matched.
- Overall suitability: Medium.
Recommended Applications
LC-MS/MS Quantitative Internal Standard is classified as Recommended based on isotope mapping, mass separation, and label-stability rules.
Isotope Dilution Mass Spectrometry is classified as Recommended based on isotope mapping, mass separation, and label-stability rules.
GC-MS Internal Standard is classified as Possible based on isotope mapping, mass separation, and label-stability rules.
Metabolic Tracing is classified as Not primary based on isotope mapping, mass separation, and label-stability rules.
Clinical Mass Spectrometry is classified as Possible based on isotope mapping, mass separation, and label-stability rules.
AI Interpretation
This analysis is based on isotope-aware structure data. The compound contains D3, 13C, with an exact mass shift of 4.022185 Da. Label stability is assessed as Moderate risk, and internal-standard suitability is Medium. These results support analytical method development and require experimental validation.
AI-assisted analytical guidance is intended for method-development support. Actual isotope stability, chromatographic behavior, fragmentation and MRM transitions should be experimentally validated.