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Isotope Standards

Compounds (solids, liquids, gasses) with well-defined isotopic compositions that act as the ultimate sources of accuracy in mass spectrometric measurements of isotope ratios.
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1 – 15 of 236 results
1

Lithium 6 Isotope Standard For ICP/MS, SPEX CertiPrep™
SDP

CAS: 7439-93-2 Molecular Formula: Li Molecular Weight (g/mol): 6.94 MDL Number: MFCD00134051 InChI Key: WHXSMMKQMYFTQS-UHFFFAOYSA-N PubChem CID: 3028194 ChEBI: CHEBI:30145 IUPAC Name: lithium SMILES: [Li]

PubChem CID 3028194
CAS 7439-93-2
Molecular Weight (g/mol) 6.94
ChEBI CHEBI:30145
MDL Number MFCD00134051
SMILES [Li]
IUPAC Name lithium
InChI Key WHXSMMKQMYFTQS-UHFFFAOYSA-N
Molecular Formula Li
2

Boron 11 Isotope Standard For ICP/MS, 10μg/mL in H20, SPEX CertiPrep™
SDP

CAS: 7440-42-8 Molecular Formula: B Molecular Weight (g/mol): 10.81 MDL Number: MFCD00134034 MFCD00151272 InChI Key: ZOXJGFHDIHLPTG-UHFFFAOYSA-N PubChem CID: 5462311 ChEBI: CHEBI:27560 IUPAC Name: boron SMILES: [B]

PubChem CID 5462311
CAS 7440-42-8
Molecular Weight (g/mol) 10.81
ChEBI CHEBI:27560
MDL Number MFCD00134034 MFCD00151272
SMILES [B]
IUPAC Name boron
InChI Key ZOXJGFHDIHLPTG-UHFFFAOYSA-N
Molecular Formula B
3

Lead 207 Isotope Standard for ICP/MS, SPEX CertiPrep™
SDP

4

Lead 206 Isotope Standard For ICP/MS, SPEX CertiPrep™
SDP

CAS: 7439-92-1 Molecular Formula: Pb Molecular Weight (g/mol): 207.20 MDL Number: MFCD00134050 InChI Key: WABPQHHGFIMREM-UHFFFAOYSA-N PubChem CID: 5352425 ChEBI: CHEBI:27889 IUPAC Name: lead SMILES: [Pb]

PubChem CID 5352425
CAS 7439-92-1
Molecular Weight (g/mol) 207.20
ChEBI CHEBI:27889
MDL Number MFCD00134050
SMILES [Pb]
IUPAC Name lead
InChI Key WABPQHHGFIMREM-UHFFFAOYSA-N
Molecular Formula Pb
5

WELLINGTON LABORATORIES LLC ISOTOPE PERFORMANCE STANDARD P

NC2588562 ISOTOPE PERFORMANCE STANDARD P

ENCOMPASS
6

Sigma Aldrich Fine Chemicals Biosciences Isotopic standard for bromine NIST(R) SRM(R) 977 | 7647-15-6 | MFCD00003475 |

Isotopic standard for bromine NIST(R) SRM(R) 977 | Mol Wt: 102.89 | 7647-15-6 | MFCD00003475 |

ENCOMPASS
7

Cerilliant Corporation A-HYDROXYMIDAZOLAM-D4 1ML

a-Hydroxymidazolam-D4 | Mol Wt: 345.79 | 1ml

ENCOMPASS
8

eMolecules​ Medchem Express / Dibenzo[bd]furan-d8 / 50mg / 785215581 / HY-W017086S / / 93952-04-6 / MFCD00151584 / 176.244 / C12H8O

Medchem Express / Dibenzo[bd]furan-d8 / 50mg / 785215581 / HY-W017086S / / 93952-04-6 / MFCD00151584 / 176.244 / C12H8O

ENCOMPASS_PREFERRED
9

Medchemexpress LLC HY-16346S 1mg Medchemexpress, Netupitant D6 CAS: Purity:>98%

Medchemexpress, HY-16346S 1mg Netupitant D6 CAS: Purity:>98% Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.

ENCOMPASS_PREFERRED
10

Sigma Aldrich Fine Chemicals Biosciences 2,2'-Dipyridyl-d8 98 atom % D | 32190-42-4 | MFCD00190432 | 1G

2,2'-Dipyridyl-d8 98 atom % D | Mol Wt: 164.23 | 32190-42-4 | MFCD00190432 | 1G

ENCOMPASS
11

Medchemexpress LLC HY-15236S 1mg Medchemexpress, PSI-6206 13CD3 CAS:1256490-42-2 Purity:>98%

Medchemexpress, HY-15236S 1mg PSI-6206 13CD3 CAS:1256490-42-2 PSI-6206 13CD3 is the deuterium labeled PSI-6206. PSI-6206 is the deaminated derivative of PSI-6130, which is a potent and selective inhibitor of HCV NS5B polymerase. PSI-6206 low potently inhibits HCV replicon with EC 90 of >100 μM. Purity:>98% Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.

ENCOMPASS_PREFERRED
12

Cambridge Isotope Laboratories Endosulfan II (D4 97%) 5 mg

Endosulfan II (D4 97%) 5 mg

ENCOMPASS
13

Medchemexpress LLC Axitinib-13C,d3 | 1261432-00-1 | 97.8% | 390.48 g·mol⁻1 | C2113CH15D3N4OS | 1 MG

Axitinib-13C,d3 is an isotopically labeled reference standard of axitinib, containing carbon-13 and three deuterium labels. It is intended for use as an internal standard, tracer, and reference material in analytical, metabolic, and pharmacokinetic studies, and is supplied as characterized, high-purity material with supporting documentation.

  • Isotopically labeled with 13C and d3 for tracer and internal standard use.
  • Purity 97.8% as reported by manufacturer.
  • Molecular weight 390.48 g·mol⁻1.
  • Provided as small-quantity reference material suitable for LC-MS workflows.
  • Supplied with batch-specific certificate of analysis for traceability.

ENCOMPASS_PREFERRED
14

Thermo Scientific STRAIGHT CONNECTOR D4/D8

NC2398863 STRAIGHT CONNECTOR D4/D8

ENCOMPASS_PREFERRED
15

CAMBRIDGE ISOTOPE LABORATORIES IMIDACLOPRID 4 4 55-D 98

NC2822808 IMIDACLOPRID 4 4 55-D 98

ENCOMPASS