The method to determine isotopic purity is Mass Spectrometry. This product is an M-Clarity level 200 item. The analytical methods are considered proprietary. Please see the link below to a sample Certificate of Analysis that notes they method:
https://www.sigmaaldrich.com/certificates/COFA/48/487090/487090-BULK_______MBBC8728__.pdf
487090
Eau-18O
99 atom % 18O
Synonyme(s) :
18O Labeled water
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About This Item
Formule linéaire :
H218O
Numéro CAS:
Poids moléculaire :
20.02
Numéro MDL:
Code UNSPSC :
12142200
ID de substance PubChem :
Nomenclature NACRES :
NA.12
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Description
Normalized with respect to hydrogen
Niveau de qualité
Pureté isotopique
99 atom % 18O
Forme
liquid
pb
100 °C (lit.)
Pf
0 °C (lit.)
Densité
1.11 g/mL at 20 °C (lit.)
Changement de masse
M+2
Température de stockage
room temp
Chaîne SMILES
[18OH2]
InChI
1S/H2O/h1H2/i1+2
Clé InChI
XLYOFNOQVPJJNP-NJFSPNSNSA-N
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Catégories apparentées
Description générale
H2180 is isotopically modified compound consisting of two hydrogen atoms covalently bonded to oxygen-18. It is most convenient to store, transport and use Oxygen-18 in the form of water enriched with this isotope.
Application
O-18 enriched water is used in Positron-Emission Tomography (PET), a nuclear imaging technique that is used to observe metabolic processes in the body as an aid to the diagnosis of disease such as tumors, staging of cancer, metastasis, dementia, etc. H2180 is currently the only potential universal bacterial substrate suitable for stable isotope probing (SIP). It has been used in the quantification of population-specific growth dynamics in benthic bacterial communities in response to changing redox conditions.
Code de la classe de stockage
10 - Combustible liquids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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Les clients ont également consulté
H H Coenen et al.
Nuclear medicine and biology, 37(7), 727-740 (2010-09-28)
Positron emission tomography (PET) is a rapidly expanding clinical modality worldwide thanks to the availability of compact medical cyclotrons and automated chemistry for the production of radiopharmaceuticals. There is an armamentarium of fluorine-18 ((18)F) tracers that can be used for
Ömer K Coskun et al.
The ISME journal, 13(6), 1546-1559 (2019-02-21)
The benthos in estuarine environments often experiences periods of regularly occurring hypoxic and anoxic conditions, dramatically impacting biogeochemical cycles. How oxygen depletion affects the growth of specific uncultivated microbial populations within these diverse benthic communities, however, remains poorly understood. Here
Elizabeth A Rettedal et al.
MicrobiologyOpen, 4(2), 208-219 (2015-02-05)
Current limitations in culture-based methods have lead to a reliance on culture-independent approaches, based principally on the comparative analysis of primary semantides such as ribosomal gene sequences. DNA can be remarkably stable in some environments, so its presence does not
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