[CH3] is the value of the integral for the MM functions at
2.8 ppm; [(CH3)2] is the integral of dimethyl amino DM at 3.0 ppm,
[(CH3)3] is the integral for trimethyl amino functions at 3.3 ppm,
[(OCH2 COOH)] represents the integral for carboxymethyl groups
at 4.15–4.5 ppm and [H] is the value for the integral attributed to
H-1 peaks between 5 and 5.7 ppm.
2.3.2. Cytotoxicity test WST-1
In vitro toxicity of CMTMC was evaluated using the cell proliferation
reagent WST-1 (Roche, Switzerland) on human dermal
fibroblasts (provided by Centre Hospitalier Universitaire Vaudois
under Ethics Committee Protocol #62/07, Lausanne, Switzerland).