L(-)-Tryptophan ≥99% for biochemistry
28821.131
:
- Pack type:Plastic bottle for solids
- Pk:25 g
- Seq:3308
- Assay (HClO4) (on dried substance):≥ 99 %
- Identification (IR):Passes test
- Identification (specific rotation):Passes test
- Appearance of solution (10 g/l; HCl 1 M):Clear and colourless
- Specif. opt. rotation (10 g/l; on dried):-33.0 - -30.0 °
- Ninhydrin-positive substances (any):≤ 0.2 %
- Ninhydrin-positive subst. (NH4 (570 nm)):≤ 0.02 %
- Ninhydrin-positive substances (total):≤ 0.5 %
- Cl (Chloride):≤ 200 ppm
- SO4 (Sulphate):≤ 300 ppm
- Fe (Iron):≤ 20 ppm
:
:204.23 g/mol
:12,09929
:290 °C
:1,34 g/cm³ (20 °C)
:Ambient
:200-795-6
:73-22-3
:C₁₁H₁₂N₂O₂
:MFCD00064340