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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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2

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
3

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
4

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
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

MEDCHEMEXPRESS LLC 25-HYDROXY VD2-D6 5MG
SDP

501873191 25-HYDROXY VD2-D6 5MG

ENCOMPASS_PREFERRED
11

MEDCHEMEXPRESS LLC MAXACALCITOL-D6 1MG
SDP

501873192 MAXACALCITOL-D6 1MG

ENCOMPASS_PREFERRED
12

MEDCHEMEXPRESS LLC VD2-D3 1MG
SDP

501873193 VD2-D3 1MG

ENCOMPASS_PREFERRED
13

MEDCHEMEXPRESS LLC BANOXANTRONE D12 DIHYDROCHLOR
SDP

501872913 BANOXANTRONE D12 DIHYDROCHLOR

ENCOMPASS_PREFERRED
14

MEDCHEMEXPRESS LLC PARICALCITOL-D6 5MG
SDP

501873958 PARICALCITOL-D6 5MG

ENCOMPASS_PREFERRED
15

Medchemexpress LLC Midostaurin-d5 | 00-00-0 | 98.0% | 575.67 g/mol | C35H25D5N4O4 | 1 MG
SDP

Midostaurin-d5 is a deuterium-labeled analogue of midostaurin supplied as a powder for analytical and biochemical research. It is intended primarily as an isotopically labeled internal standard for pharmacokinetic, metabolic, and bioanalytical assays.

  • Deuterium-labeled internal standard for midostaurin studies.
  • Molecular formula C35H25D5N4O4; molecular weight 575.67 g/mol.
  • Purity 98.0% as supplied.
  • Physical form: powder; typical package size 1 mg.
  • Storage: powder -20°C (up to 3 years) or 4°C (up to 2 years).
  • Solubility: DMSO ≈15 mg/mL; sonication and warming recommended.

ENCOMPASS_PREFERRED