C9H16NO2
186.33 g/mol
Research ReagentWarning
4-Oxo-TEMPO-d16, free radical
CAS36763-53-8
Category
Research Reagent
Compound Class
Heterocycle
Primary Use
Research Compound
4-Oxo-TEMPO-d16 is a deuterated stable free radical compound used as a reference standard in electron spin resonance (ESR) spectroscopy. Its isotopic labeling and paramagnetic properties make it valuable for calibrating and validating ESR instruments in research laboratories.
ESR spectroscopy reference standard
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Safety Reference
Warning
H400Very toxic to aquatic life
Customs Tariff Classification
The international HS code for 4-Oxo-TEMPO-d16, free radical (CAS 36763-53-8) is 2845.90.
HS code (international, 6-digit)
2845.90
EU CN code (8-digit)
2845 90 10
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
InChIKey
WSGDRFHJFJRSFY-NMRSHPDNSA-N
SMILES
[2H]C1(C(=O)C(C(N(C1(C([2H])([2H])[2H])C([2H])([2H])[2H])[O])(C([2H])([2H])[2H])C([2H])([2H])[2H])([2H])[2H])[2H]
Synonyms (4)
- 4-Oxo-TEMPO-d16, free radical
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