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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 188 results
1

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

2

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

CAS: 7732-18-5,7697-37-2,7439-93-2 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 7732-18-5,7697-37-2,7439-93-2
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
3

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

CAS: 7697-37-2 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 7697-37-2
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
4

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

CAS: 14797-71-8,7732-18-5 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 14797-71-8,7732-18-5
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
5

WELLINGTON LABORATORIES LLC ISOTOPE PERFORMANCE STANDARD P

NC2588562 ISOTOPE PERFORMANCE STANDARD P

ENCOMPASS
6

THERMO ASHEVILLE 3P STRAIGHT CONNECTOR D4/D8

NC2398863 STRAIGHT CONNECTOR D4/D8

ENCOMPASS_PREFERRED
7

Cambridge Isotope Laboratories BENZOIC ACID CALIBRANT FOR QNMR 15mM BENZOIC ACID IN DMSO-D6 (120 UL FILL VOLUME), 1 3MM TUBE

BENZOIC ACID CALIBRANT FOR QNMR 15mM BENZOIC ACID IN DMSO-D6 (120 UL FILL VOLUME), 1 3MM TUBE

ENCOMPASS_PREFERRED
8

Cambridge Isotope Laboratories 1-METHYLIMIDAZOLE (D6, 98%), 0.5 G

1-METHYLIMIDAZOLE (D6, 98%), 0.5 G

ENCOMPASS_PREFERRED
9

Cambridge Isotope Laboratories LABELED AMINO ACID STANDARDS SET A1, 10 VIALS

LABELED AMINO ACID STANDARDS SET A1, 10 VIALS

ENCOMPASS_PREFERRED
10

Apexbio Technology LLC Imidacloprid 138261-41-3 200mg

Imidacloprid is a small-molecule modulator targeting nicotinic acetylcholine receptors (nAChRs) in insect nervous systems It is designed to selectively bind to nAChRs thereby disrupting cholinergic neurotransmission and neuronal signaling Imidacloprid exerts its biological activity primarily through interference with normal synaptic transmission by binding to nAChRs and causing abnormal neuronal signaling Based on these pharmacological properties Imidacloprid holds research potential in investigating cholinergic neurotransmission pathways receptor-ligand interactions neuronal signaling dysfunction neurotoxicity mechanisms and insecticide resistance It is also used as a comparative or reference molecule when characterizing the pharmacological or neurotoxicological profiles of candidate neuroactive compounds and insecticidal agents

ENCOMPASS_PREFERRED
11

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
12

Sigma Aldrich Fine Chemicals Biosciences Hydrazine-d4 monodeuterate 98 atom % D | 102096-80-0 | MFCD01074336 | 20G

Hydrazine-d4 monodeuterate 98 atom % D | Mol Wt: 56.1 | 102096-80-0 | MFCD01074336 | 20G

ENCOMPASS
13

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
14

Sigma Aldrich Fine Chemicals Biosciences 1,3-Butadiene-d6 >=98 atom % D, >=98% (CP), contains hydroquinone as stabilizer | 1441-56-1 | MFCD00142516 | 1L

1,3-Butadiene-d6 >=98 atom % D, >=98% (CP), contains hydroquinone as stabilizer | Purity: >=98% (CP) | Mol Wt: 60.13 | 1441-56-1 | MFCD00142516 | 1L

ENCOMPASS
15

Sigma Aldrich Fine Chemicals Biosciences Acenaphthylene-d8 >=98 atom % D, 98% (CP) | 93951-97-4 | MFCD00143527 | 100MG

Acenaphthylene-d8 >=98 atom % D, 98% (CP) | Purity: 98% (CP) | Mol Wt: 160.24 | 93951-97-4 | MFCD00143527 | 100MG

ENCOMPASS