L-Histidine
EP
CAS #:
71-00-1
Molecular Formula:
C6H9N3O2
Synonym:
L-2-Amino-3-(1H-imidazol-4-yl)propionic Acid ; L-alpha-Amino-4(or 5)-imidazolepropionic Acid;
Molecular Weight:
155.2 g/mol
Overview
L-Histidine, also known as 2-Amino-3-(1H-imidazol-4-yl)propanoic acid, is an essential amino acid with an imidazole functional group. It is a precursor for carnosine biosynthesis and histamine.
| Characters | Unit | Specification |
|---|---|---|
| Identity A, B, C, D | Correlates to test | |
| Appearance of solution | Correlates to test | |
| Ninhydrin-positive substances | Correlates to test | |
| Specific optical rotation (USP) | o | 11.4 - 12.4 |
| Heavy Metals (as Pb) | % | ≤ 0.0010 |
| Chlorides | % | ≤ 0.0200 |
| Sulphates | % | ≤ 0.0300 |
| Ammonium | % | ≤ 0.02 |
| Iron | % | ≤ 0.0010 |
| Loss on drying | % | ≤ 0.5 |
| Sulphated ash | % | ≤ 0.1 |
| Assay | % | 98.5 - 101.0 |
Shelf Life/Retest Date: L-Histidine can be kept for at least 2 years if stored in a cool and dry place under recommended conditions.
Storage/Shipping Conditions:
- Keep container tightly closed in a cool, well-ventilated place.
- Store at room temperature in the original container.
- Store away from incompatible materials.
Pack Sizes: 5 Kg
