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L(-)-Tryptophan ≥99% for biochemistry
L(-)-Tryptophan ≥99% for biochemistry
Catalog # 28821.131
Supplier:  VWR Chemicals
CAS Number:  
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L(-)-Tryptophan ≥99% for biochemistry
Catalog # 28821.131
Supplier:  VWR Chemicals
CAS Number:  

Specifications

  • Pack type:
    Plastic bottle for solids
  • Pk:
    25 g
  • Seq:
    3308
  • Environmentally Preferable:

Specifications

Specification Test Results

  • 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

Specification Test Results

About this item

Synonyms: L-Tryptophan, Tryptophan, L-α-Amino-3-indolepropionic acid, (S)-2-Amino-3-(3-indolyl)propionic acid, H-Trp-OH
 :
 :204.23 g/mol
Merck Index:12,09929
Melting Pt:290 °C
Density:1,34 g/cm³ (20 °C)
Storage Temperature:Ambient
EINECS:200-795-6
CAS Number:73-22-3
Formula:C₁₁H₁₂N₂O₂
MDL Number:MFCD00064340