Oxygen-¹⁸O₂ - ≥99 atom% 18O,≥99% , CAS No.32767-18-3

CAS: 32767-18-3 Cat. No.: O474114 Molecular Weight: 36 EC Number: 620-572-0
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Synonyms
DTXSID80437936 | Oxygen-18O2 | Oxygen-18O2, 10 atom % 18O (random) | Oxygen-18O2, 50 atom % 18O (random) | Oxygen-18O2, 90 atom % 18O | Oxygen-18O2, 99 atom % 18O, 99% (CP) | 18O2 | Oxygen-18O2, 97 atom % 18O | Oxygen-18O2, 25 atom % 18O (random) | Oxygen
Storage
Room temperature
Size
Status
Price
Qty
500ml
O474114-500ml
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Why this grade

≥99 atom% 18O,≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Oxygen-18O2is a naturally occurring stable isotope of oxygen. Natural abundance of18O2containing at least 99 atom % O-18.18O2isotopic labelling was employed, in conjunction with time-of-flight secondary ion mass spectrometry, to characterize and elucidate the parts of the degradation mechanisms induced by molecular oxygen. Using18O2as a label, it is possible to study collagen degradation with this non-reutilized label and so avoid the large errors that are introduced by the recycling of other labels.

Specifications

Synonyms
DTXSID80437936 | Oxygen-18O2 | Oxygen-18O2, 10 atom % 18O (random) | Oxygen-18O2, 50 atom % 18O (random) | Oxygen-18O2, 90 atom % 18O | Oxygen-18O2, 99 atom % 18O, 99% (CP) | 18O2 | Oxygen-18O2, 97 atom % 18O | Oxygen-18O2, 25 atom % 18O (random) | Oxygen
Specifications & Purity
≥99 atom% 18O, ≥99%
Storage
Room temperature
Names and Identifiers
Canonical SmilesO=O
InChIKeyMYMOFIZGZYHOMD-XPULMUKRSA-N
INCHI1S/O2/c1-2/i1+2,2+2
Isomeric SMILES [18O]=[18O]
WGK Germany 3
Molecular Weight 36
Reaxy-Rn 9254326
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=9254326&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Documents & Articles
Citations of This Product
References
1. Shaofu Huang, Yuhui Liu, Lincong Ren, Lingyan Huang, Jiahuan Tang, Zhen Yu, Man Chen, Shungui Zhou.  (2025)  Direct Conversion of N2 to Nitric Acid via Contact Electrocatalysis.  ACS Sustainable Chemistry & Engineering,      [PMID:] [10.1021/acssuschemeng.5c02290]
Solution Calculators
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