Description
L-Tryptophane is an essential aromatic amino acid offered at a minimum purity of 98,5 % in Ph.Eur. quality for biochemistry. It carries the empirical formula C₁₁H₁₂N₂O₂, a molar mass of 204,23 g/mol, CAS number 73-22-3 and EG number 200-795-6. This specification supports analytical and preparative work in life-science and food laboratories, including nitrogen determination according to Kjeldahl and related food-analysis protocols where a defined amino-acid standard is required. The compound is Physical and identity data align with the stated molar mass and molecular formula, enabling straightforward integration into existing SOPs and reagent inventories. Sourced from manufacturer Carl ROTH, the material is positioned for research and quality-control environments that specify Ph.Eur.-grade L-tryptophan. Clear labelling of CAS, EG number and pack format helps laboratories maintain traceable reagent records across analytical chemistry and biochemistry workflows.
This article is part of Amino acids & peptides, in Organic chemicals & synthesis reagents.
Key features
- Appearance: white to off-white, cryst. or amorphic powder
- Assay: 98.5-101.0 %
- Appearance of solution: complies
- Specific rotation [α]20D (dry substance): -33.0° to -30.0°
- Foreign amino acids: complies
- Loss on drying: ≤0.5 %
- Sulphated ash: ≤0.1 %
- Chloride (Cl): ≤0.02 %
- Sulphate (SO4): ≤0.03 %
- Ammonium (NH4): ≤0.02 %
- CAS number: 73-22-3
- Pack sizes: 10 g, 100 g, 1 kg, 250 g
- EG nr.: 200-795-6
- Purity: min. 98,5 %, Ph.Eur.
- Molar mass: 204,23 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about L-Tryptophane, min. 98,5 %, Ph.Eur., for biochemistry, 10 g, glass
What is this article?
L-Tryptophane, min. 98,5 %, Ph.Eur., for biochemistry, 10 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Amino acids & peptides, inside Organic chemicals & synthesis reagents, in Lab chemicals.
An amino acid or a peptide is specified by the sequence or the residue, the chirality, and for a peptide the purity and the salt form. L and D forms are different compounds. A trifluoroacetate salt and a hydrochloride salt weigh differently per mole of peptide.
An organic chemical is built on carbon. In this category it is a building block or a reagent for making another molecule: a starting material, a coupling agent, a polymer, a PEG. Purity is a specification of which impurities remain. The structure, the CAS number and the grade decide whether two bottles are the same substance. Structures and properties are on PubChem. Nomenclature is IUPAC. Classification follows ECHA and the CLP Regulation.
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The category is Organic chemicals & synthesis reagents. The sub-category is Amino acids & peptides. The catalogue is Lab chemicals.
Shelves beside this one are Organic building blocks & synthesis reagents, Polymers, PEGs & silicones and Click chemistry, bioconjugation & synthesis reagents.
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