1.04506
L-Hydroxyproline
for biochemistry
Synonym(s):
L-Hydroxyproline, L(-)-4-Hydroxypyrrolidine-2-carboxylic acid, Hyp
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About This Item
Empirical Formula (Hill Notation):
C5H9NO3
CAS Number:
Molecular Weight:
131.13
UNSPSC Code:
12352209
EC Index Number:
200-091-9
Recommended Products
Quality Level
form
solid
pH
5.5-6.5 (20 °C, 50 g/L in H2O)
mp
274 °C
solubility
500 g/L
bulk density
610 kg/m3
InChI
1S/C5H9NO3/c7-3-1-4(5(8)9)6-2-3/h3-4,6-7H,1-2H2,(H,8,9)
InChI key
PMMYEEVYMWASQN-UHFFFAOYSA-N
Analysis Note
Assay (perchloric acid titration, calculated on dried substance): ≥ 99.0 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, crystalline powder or colorless crystals
Appearance of solution (100 g/l, water): clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): -47.5 to -46.0
Heavy metals (as Pb): ≤ 0.001 %
NH₄ (Ammonium): ≤ 0.01 %
Foreign amino acids: ≤ 0.3 %
Other ninhydrine positive substances(as Glycine): ≤ 0.1 %
Methanol (GC): ≤ 0.3 %
Loss on drying (105 °C; 3 h): ≤ 0.4 %
Identity (IR-spectrum): passes test
Appearance: white to almost white, crystalline powder or colorless crystals
Appearance of solution (100 g/l, water): clear and colorless
Spec. rotation (α 20/D, 50 g/l, hydrochloric acid 1 mol/l, calc. on dried substance): -47.5 to -46.0
Heavy metals (as Pb): ≤ 0.001 %
NH₄ (Ammonium): ≤ 0.01 %
Foreign amino acids: ≤ 0.3 %
Other ninhydrine positive substances(as Glycine): ≤ 0.1 %
Methanol (GC): ≤ 0.3 %
Loss on drying (105 °C; 3 h): ≤ 0.4 %
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
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