L(-)-Tryptophan ≥99% for biochemistry

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28821.131EA 127 EUR
28821.131
L(-)-Tryptophan ≥99% for biochemistry
L(-)-Tryptophan
Formule: C₁₁H₁₂N₂O₂
MW: 204,23 g/mol
Smeltpunt: 290 °C
Dichtheid: 1,34 g/cm³ (20 °C)
Opslagtemperatuur: Kamertemperatuur
MDL-nummer: MFCD00064340
CAS-nummer: 73-22-3
EINECS: 200-795-6
Merck Index: 12,09929

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Specificaties testresultaten

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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