Impurity Reference Standards

Stable Isotope Labelled Standards (Deuterated, 13C, 15N)

Deuterated, 13C and 15N labelled APIs, metabolites and impurities for use as internal standards in LC-MS bioanalysis and trace testing.

976 productsCOA + SDS with every lot

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Tiotropium bromide

CAS: 136310-93-5
Formula: C₁₉H₂₂BrNO₄S₂
MW: 472.4 g/mol

ZX-022915

Tolfenamic acid-13C6

CAS: 1420043-61-3
Formula: C₁₄H₁₂ClNO₂
MW: 267.66 g/mol

ZX-046620

Toluene-d3

CAS: 1124-18-1
Formula: C₇H₈
MW: 95.16 g/mol

ZX-045989

Toluene-d5

CAS: 1603-99-2
Formula: C₇H₈
MW: 97.17 g/mol

ZX-043277

Toluene-d8

CAS: 2037-26-5
Formula: C₇H₈
MW: 100.19 g/mol

ZX-036094

Topiramate 13C6

CAS: 1217455-55-4
Formula: C₁₂H₂₁NO₈S
MW: 339.36 g/mol

ZX-036311

Topiramate-d12

CAS: 1279037-95-4
Formula: C₁₂H₂₁NO₈S
MW: 351.44 g/mol

ZX-036310

Trans-Cinnamic acid-Beta,2,3,4,5,6-d6

CAS: 91453-04-2
Formula: C₉H₈O₂
MW: 154.19 g/mol

ZX-044032

trans-Diethyl-1,1,1',1'-stilbestrol-3,3',5,5'-d8

CAS: 91318-10-4
Formula: C₁₈H₂₀O₂
MW: 276.4 g/mol

ZX-033308

Trans-Hydroxy Praziquantel

CAS: 134924-71-3
Formula: C₁₉H₂₄N₂O₃
MW: 328.4 g/mol

ZX-026492

Trazodone-d6 Hydrochloride

CAS: 1181578-71-1
Formula: C₁₉H₂₃Cl₂N₅O
MW: 414.4 g/mol

ZX-032694

Tributyltin Chloride-d27

CAS: 1257647-76-9
Formula: C₁₂H₂₇ClSn
MW: 352.67 g/mol

ZX-040234

Trichloroacetic acid-2-13C

CAS: 32479-99-5
Formula: C₂HCl₃O₂
MW: 164.38 g/mol

ZX-042285

Triethyl Phosphate-d15

CAS: 135942-11-9
Formula: C₆H₁₅O₄P
MW: 197.25 g/mol

ZX-042291

Trifluoroacetic acid-d

CAS: 599-00-8
Formula: C₂HF₃O₂
MW: 115.03 g/mol

ZX-035903

Trihydro(tetrahydrofuran)boron-d3

CAS: 96220-57-4
Formula: C₄H₁₁BO
MW: 88.96 g/mol

ZX-046027

Trimethoprim-d9

CAS: 1189460-62-5
Formula: C₁₄H₁₈N₄O₃
MW: 299.37 g/mol

ZX-036335

Trimethylamine D9 Hydrochloride

CAS: 18856-86-5
Formula: C₃H₁₀ClN
MW: 104.63 g/mol

ZX-043280

Trimethylamine-D9 N-Oxide

CAS: 1161070-49-0
Formula: C₃H₉NO
MW: 84.16 g/mol

ZX-042631

Trimipramine-D3 Major Maleate Salt

CAS: 1185245-93-5
Formula: C₂₄H₃₀N₂O₄
MW: 413.5 g/mol

ZX-036338

Triphenyl Phosphate-d15

CAS: 1173020-30-8
Formula: C₁₈H₁₅O₄P
MW: 341.4 g/mol

ZX-036341

Trofinetide

CAS: 853400-76-7
Formula: C₁₃H₂₁N₃O₆
MW: 315.32 g/mol

ZX-027438

Tulobuterol-d9 Hydrochloride

CAS: 1325559-14-5
Formula: C₁₂H₁₉Cl₂NO
MW: 273.24 g/mol

ZX-036347

Ursodeoxycholic Acid-d4

CAS: 347841-46-7
Formula: C₂₄H₄₀O₄
MW: 396.6 g/mol

ZX-036359

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