3-[N-Tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonic acid

3-[N-三(羟甲基)甲氨基]-2-羟基丙磺酸

Also known as: TAPSO, N-[Tris(hydroxymethyl)methyl]-3-amino-2-hydroxypropanesulfonic acid, 2-Hydroxy-3-[[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]amino]propanesulfonic acid, 2-Hydroxy-3-{[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]amino}propane-1-sulfonic acid, 3-[[1,3-Dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]-2-hydroxypropane-1-sulfonic acid, 1-Propanesulfonic acid, 2-hydroxy-3-[[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]amino]-, TAPSO (buffer), TAPSO Buffer, N-[Tris(hydroxymethyl)methyl]-3-amino-2-hydroxypropanesulphonic acid

3-[N-Tris(hydroxymethyl)methylamino]-2-hydroxypropanesulfonic acid (CAS 68399-81-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C7H17NO7S and a molecular weight of 259.277 g/mol. It is also known as TAPSO, N-[Tris(hydroxymethyl)methyl]-3-amino-2-hydroxypropanesulfonic acid and 2-Hydroxy-3-[[2-hydroxy-1,1-bis(hydroxymethyl)ethyl]amino]propanesulfonic acid. Key properties include a melting point of 224-229 °C (dec.) and a density of 1.6±0.1 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

68399-81-5

Jingsj CID

J-32668-5

Molecular Formula

C₇H₁₇NO₇S

Chinese Name

3-[N-三(羟甲基)甲氨基]-2-羟基丙磺酸

Molecular Weight

259.277 g/mol

Category

Organic Acids

Last updated

8/21/2026