608572
Deuterium oxide-18O
99 atom % D, 95 atom % 18O
Synonym(s):
Doubly Labeled Water, Heavy water-d2,18O, Unnormalized water-18O
About This Item
isotopic purity
95 atom % 18O
99 atom % D
bp
101.4 °C (lit.)
mp
3.8 °C (lit.)
density
1.216 g/mL at 25 °C
mass shift
M+4
SMILES string
[2H][18O][2H]
InChI
1S/H2O/h1H2/i1+2/hD2
InChI key
XLYOFNOQVPJJNP-LAPWFLRPSA-N
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Packaging
Storage Class
10 - Combustible liquids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
Certificates of Analysis (COA)
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Articles
By first labeling molecular oxygen and then body water with 18O in a rat, Lifson measured the 18O abundance in expired CO2 and found the oxygens in CO2 exchanged with the oxygen in water. Indeed, these two oxygen containing species were in rapid isotopic equilibrium due to the actions of what we now know is carbonic anhydrase (Lifson, 1966)
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