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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 377 results
1

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

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
2

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

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
4

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

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
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
9

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
10

Medchemexpress LLC IMIDACLOPRID-UREA 50 mg
SDP

IMIDACLOPRID-UREA 50MG

ENCOMPASS_PREFERRED
11

Medchemexpress LLC IMIDACLOPRID-UREA 25 mg
SDP

IMIDACLOPRID-UREA 25MG

ENCOMPASS_PREFERRED
12

Medchemexpress LLC Simazine | 122-34-9 | 99.4% | 100 MG
SDP

Simazine is a triazine herbicide widely used in agriculture, potted plant, and tree production. It can induce apoptosis of immune cells in the spleen of mice and inhibit the proliferation of B cells and T cells in mice.

  • Triazine herbicide
  • Can inhibit maturation, disrupt spindle morphology, affect mitochondrial function, increase ROS levels, and induce DNA damage and early apoptosis of mouse oocytes
  • Can lead to immunosuppression and immunotoxicity in mice
  • Reduced proliferation of both spleen T and B cells in mice
  • Decreased the number of spleen CD4+ T lymphocytes, while CD8+ T cells remained unchanged in mice
  • Reduced immune function, higher intracellular [Ca2+], and oxidative stress in mice
  • Induced spleen immune cell apoptosis by reducing Bcl-2, while increasing Fas and Caspase-3 levels in mice
  • Appearance: Solid, white to off-white

ENCOMPASS_PREFERRED
13

Medchemexpress LLC Deruxtecan-d5 | 1599440-13-7 | 98.4% | 1039.08 | 1 MG
SDP

Deruxtecan-d5 is a deuterium-labeled Deruxtecan. It is an ADC drug-linker conjugate made of an DX-8951 derivative and a maleimide-GGFG peptide linker, used for synthesizing DS-8201 and U3-1402.

  • Can be used as a tracer.
  • Can be used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
  • Stable heavy isotopes have been incorporated into drug molecules for quantitation during drug development.
  • Deuteration can affect the pharmacokinetic and metabolic profiles of drugs.

ENCOMPASS_PREFERRED
14

Avanti Polar Lipids ZYMOSTEROL-D5
SDP

NC3367543 ZYMOSTEROL-D5

ENCOMPASS
15

eMolecules​ 764661-24-7 | Medchem Express | NNK-d4 | 1mg | 784543856 | HY-126477S | MFCD01861565 | 211.257 | C10H13N3O2

Medchem Express | NNK-d4 | 1mg | 784543856 | HY-126477S | 764661-24-7 | MFCD01861565 | 211.257 | C10H13N3O2

ENCOMPASS_PREFERRED