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53319 Sigma

L-Histidine

BioUltra, ≥99.5% (NT)

Synonym: (S)-2-Amino-3-(4-imidazolyl)propionic acid, NSC 137773

  • CAS Number 71-00-1

  • Empirical Formula (Hill Notation) C6H9N3O2

  • Molecular Weight 155.15

  •  Beilstein Registry Number 84088

  •  EC Number 200-745-3

  •  MDL number MFCD00064315

  •  PubChem Substance ID 57651378

  •  eCl@ss 32160406

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Properties

Related Categories Allium cepa (Onion), Allium sativum (Garlic), Aloe Vera, Amino Acids, Amino acids,
InChI Key   HNDVDQJCIGZPNO-YFKPBYRVSA-N
product line   BioUltra
assay   ≥99.5% (NT)
optical activity   [α]20/D −39±1°, c = 2% in H2O
impurities   insoluble matter, passes filter test
  ≤0.5% foreign amino acids
ign. residue   ≤0.1% (as SO4)
loss   ≤0.5% loss on drying, 110 °C
pH   7.0-8.0 (25 °C, 0.1 M in H2O)
mp   282 °C (dec.)(lit.)
  ~285 °C (dec.)
solubility   H2O: soluble0.1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤100 mg/kg
  sulfate (SO42-): ≤100 mg/kg
cation traces   Al: ≤5 mg/kg
  As: ≤0.1 mg/kg
  Ba: ≤5 mg/kg
  Bi: ≤5 mg/kg
  Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤50 mg/kg
  Li: ≤5 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Mo: ≤5 mg/kg
  NH4+: ≤500 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
λ   0.1 M in H2O
UV absorption   λ: 260 nm Amax: 0.05
  λ: 280 nm Amax: 0.05
Gene Information   human ... CA1(759), CA2(760)

Description

Biochem/physiol Actions

Precursor of histamine by action of histidine decarboxylase.

Other Notes

Amino acid spacing in isotachophoresis on polyacrylamide gels - a critical evaluation; Prevents circular DNA strand cleavage in a xanthine-xanthine oxidase system; Growth requirement of various microorganisms.

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
MS3070000

Documents

Certificate of Analysis

Protocols & Articles

Related Content

Amino Acids Reference Chart

The hydrophobicity index is a measure of the relative hydrophobicity, or how soluble an amino acid is in water. In a protein, hydrophobic amino acids are likely to be found in the interior, whereas h...

Peer-Reviewed Papers
15

References

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