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

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