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R-11131

3,3-Dimethylbutanoic acid (d9)

Stable isotope standard for analytical research and method development.

Module Type
Stable Isotope Standards
Category
Metabolites
CAS
1399294-95-1
Unlabeled CAS
1070-83-3
PubChem CID
169438927
Molecular Formula
C6H3D9O2
Molecular Weight
125.21
AI Isotope Property & Application AnalysisShow

Isotope Summary

Labels
D9
Labeled atoms
9
Isotope positions
Partially confirmed in structure
Calculation reliability
Medium, some information should be confirmed

Mass & MS Parameters

Unlabeled exact mass
116.08373 Da
Labeled exact mass
125.14022 Da
Exact mass shift
9.056491 Da
Nominal mass shift
9
Ionm/zStatus
[M+H]+126.147497Theoretical
[M+Na]+148.129438Theoretical
[M+NH4]+143.174043Theoretical
[M-H]-124.132944Theoretical

Label Stability

Overall
Low 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
High
Chromatographic similarity
Possible isotope effect
Natural isotope overlap
Low
  • Exact mass separation is 9.056491 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: High.

Recommended Applications

LC-MS/MS Quantitative Internal Standard
Recommended

LC-MS/MS Quantitative Internal Standard is classified as Recommended based on isotope mapping, mass separation, and label-stability rules.

Isotope Dilution Mass Spectrometry
Recommended

Isotope Dilution Mass Spectrometry is classified as Recommended based on isotope mapping, mass separation, and label-stability rules.

GC-MS Internal Standard
Possible

GC-MS Internal Standard is classified as Possible based on isotope mapping, mass separation, and label-stability rules.

Bioanalytical Method Development
Recommended

Bioanalytical Method Development is classified as Recommended based on isotope mapping, mass separation, and label-stability rules.

AI Interpretation

This analysis is based on isotope-aware structure data. The compound contains D9, with an exact mass shift of 9.056491 Da. Label stability is assessed as Low risk, and internal-standard suitability is High. 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.