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Isotope Standards

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 205 results
1

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

2

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

3

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

4

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
5

WELLINGTON LABORATORIES LLC ISOTOPE PERFORMANCE STANDARD P

NC2588562 ISOTOPE PERFORMANCE STANDARD P

ENCOMPASS
6

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
7

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

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

ENCOMPASS_PREFERRED
8

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

LABELED AMINO ACID STANDARDS SET A1, 10 VIALS

ENCOMPASS_PREFERRED
9

Sigma Aldrich Fine Chemicals Biosciences Cocaethylene-D8 solution 1

An analog of benzoylecgonine cocaethylene is a metabolite of cocaine formed in the presence of ethanol. This stable-labeled internal standard is suitable for quantitation of cocaethylene levels in urine blood and saliva by LC/MS or GC/MS for urine drug testing clinical toxicology forensic analysis or isotope dilution methods.

ENCOMPASS
10

eMolecules​ Medchem Express / Clozapine-d8 / 1mg / 742367722 / HY-14539S / / 1185053-50-2 / MFCD09752113 / 334.880 / C18H19ClN4

Medchem Express / Clozapine-d8 / 1mg / 742367722 / HY-14539S / / 1185053-50-2 / MFCD09752113 / 334.880 / C18H19ClN4

ENCOMPASS_PREFERRED
11

eMolecules​ Medchem Express / Robenidine-d8 (hydrochloride) / 5mg / 784544378 / HY-B2157S / / 1173097-77-2 / MFCD10567356 / 378.710 / C15H14Cl3N5

Medchem Express / Robenidine-d8 (hydrochloride) / 5mg / 784544378 / HY-B2157S / / 1173097-77-2 / MFCD10567356 / 378.710 / C15H14Cl3N5

ENCOMPASS_PREFERRED
12

eMolecules​ AstaTech / ANILINE-D5 / 0.25g / 721956294 / 41424 / 95.000 / 4165-61-1 / MFCD00044420 / 98.160 / C6H7N

AstaTech / ANILINE-D5 / 0.25g / 721956294 / 41424 / 95.000 / 4165-61-1 / MFCD00044420 / 98.160 / C6H7N

ENCOMPASS_PREFERRED
13

eMolecules​ AstaTech / ETHYL ACETATE-D8 / 0.1g / 593997436 / D99474 / 95.000 / 117121-81-0 / MFCD00190440 / 96.155 / C4H8O2

AstaTech / ETHYL ACETATE-D8 / 0.1g / 593997436 / D99474 / 95.000 / 117121-81-0 / MFCD00190440 / 96.155 / C4H8O2

ENCOMPASS_PREFERRED
14

eMolecules​ Medchem Express / DC-LC3in-D5 / 5mg / 721310190 / HY-141882 / / 2868312-73-4 / [null] / 397.300 / C19H22Cl2N2O3

Medchem Express / DC-LC3in-D5 / 5mg / 721310190 / HY-141882 / / 2868312-73-4 / [null] / 397.300 / C19H22Cl2N2O3

ENCOMPASS_PREFERRED
15

Cayman Chemical ImIdacloprId 25mg
SDP

An NMDA receptor antagonist (Ki 0.14 UM) binds to NMDA receptors containing GluN2A GluN2B GluN2C and GluN2D subunits (Kis 0.04 0.3 0.6 and 2 UM respectively) inhibits NMDA-induced depolarizations in isolated hemisected frog spinal cord (pA2 6.56) and NMDA-induced sodium efflux from rat brain slices (pA2 6.2) inhibits the clonic phase of sound-induced seizures in DBA/2 mice (ED50 65.8 Umol/kg) and the myoclonic phase of stroboscopic-induced seizures in P. papio photosensitive baboons (ED50 127 Umol/kg)

ENCOMPASS_PREFERRED