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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 378 results
1

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
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

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
4

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

5

Cambridge Isotope Laboratories N-Propanol (D8 98%) 1 g

N-Propanol (D8 98%) 1 g

ENCOMPASS
6

WELLINGTON LABORATORIES LLC ISOTOPE PERFORMANCE STANDARD P
SDP

NC2588562 ISOTOPE PERFORMANCE STANDARD P

ENCOMPASS
7

Cerilliant Corporation COCAETHYLENE-D8(BENZOYLECG,1ML

Cocaethylene-D8 (Benzoylecgonine ethyl ester-D8), 100 μg/mL

ENCOMPASS
8

Sigma Organic Chemistry SIGMA ORGANIC CHEMISTRY

NC4042888 EPINEPHRINE-D6 SOLUTION 1ML

ENCOMPASS_PREFERRED
9

Cerilliant Corporation MIDAZOLAM-D4 MALEATE 1ML

Midazolam-D4 maleate | Mol Wt: 445.86 | 1ml

ENCOMPASS
10

Sigma Aldrich Fine Chemicals Biosciences 1,2-Propanediol-d8 98 atom % D | 80156-55-4 | MFCD00142484 | 5G

1,2-Propanediol-d8 98 atom % D | Purity: 99% (CP) | Mol Wt: 84.14 | 80156-55-4 | MFCD00142484 | 5G

ENCOMPASS
11

Cayman Chemical Leukotriene D4 methyl ester
SDP

A more lipid soluble formulation of LTD4

ENCOMPASS_PREFERRED
12

Sigma Aldrich Fine Chemicals Biosciences Nitazoxanide >=98% (HPLC) | 55981-09-4 | MFCD00416599 | 50MG

Nitazoxanide >=98% (HPLC) | Purity: >=98% (HPLC) | Mol Wt: 307.28 | 55981-09-4 | MFCD00416599 | 50MG

ENCOMPASS
13

Cayman Chemical Leukotriene A4d5 methyl ester
SDP

An internal standard for the quantification of LTA4 methyl ester by GC- or LC-MS

ENCOMPASS_PREFERRED
14

Sigma Aldrich Fine Chemicals Biosciences Enalaprilat dihydrate European Pharmacopoeia (EP) Reference Standard | 84680-54-6 | MFCD00941393 |

Enalaprilat dihydrate European Pharmacopoeia (EP) Reference Standard | Mol Wt: 384.42 | 84680-54-6 | MFCD00941393 |

ENCOMPASS
15

Sigma Aldrich Fine Chemicals Biosciences Benzoyl chloride-d5 99 atom % D | 43019-90-5 | MFCD00134309 | 1G

Benzoyl chloride-d5 99 atom % D | Purity: 99% (CP) | Mol Wt: 145.6 | 43019-90-5 | MFCD00134309 | 1G

ENCOMPASS