Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate
Synonym(s):TOPS;3-(N-Ethyl-m-toluidino)propanesulfonic acid sodium salt;3-(Ethyl[3-methylphenyl]amino)-1-propanesulfonic acid;Sodium N-ethyl-N-(3-sulfopropyl)-m-toluidine;Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate
- CAS NO.：40567-80-4
- Empirical Formula: C12H20NNaO3S
- Molecular Weight: 281.35
- MDL number: MFCD00043050
- EINECS: 999-999-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-07-16 07:06:08
What is Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate?
Description
N-ethyl-N-(3-sulfopropyl)-3-methylaniline sodium salt (TOPS), which is one of the new Trinder's color reagents, and the appearance is white crystalline powder. Because of its molecular structure and the sulfopropyl group on the single atom connected to the benzene ring, there is one less hydroxyl group with a slightly stronger stability, high water solubility, and high detection sensitivity. It is widely used in diagnostic and biochemical testing, mainly for the colorimetric determination of uric acid and cholesterol; when used as a water-soluble reagent, it can be used to determine hydrogen peroxide by enzymatic photometry.
Chemical properties
White powder
Properties of Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate
| storage temp. | Inert atmosphere,Room Temperature |
| form | Solid |
| color | White to off-white |
| InChI | InChI=1S/C12H19NO3S.Na.H/c1-3-13(8-5-9-17(14,15)16)12-7-4-6-11(2)10-12;;/h4,6-7,10H,3,5,8-9H2,1-2H3,(H,14,15,16);; |
| CAS DataBase Reference | 40567-80-4(CAS DataBase Reference) |
Safety information for Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Sodium 3-(N-ethyl-3-methylanilino)propanesulfonate
| InChIKey | CMQWQOXGZUZROJ-UHFFFAOYSA-N |
| SMILES | N(C1C=CC=C(C)C=1)(CC)CCCS(O)(=O)=O.[NaH] |
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