L(-)-Tryptofan ≥99% for biokjemi
Leverandør: VWR Chemicals
28821.131EA
2025
NOK
28821.131
L(-)-Tryptofan ≥99% for biokjemi
L(-)-Tryptofan
Formel:
C₁₁H₁₂N₂O₂ MW: 204,23 g/mol Smeltepunkt: 290 °C Tetthet: 1,34 g/cm³ (20 °C) Lagringstemperatur: Romtemperatur |
MDL nummer:
MFCD00064340 CAS-nummer: 73-22-3 EINECS: 200-795-6 Merck Indeks: 12,09929 |
Spesifikasjon Testresultater
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 |
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