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Impurity Reference Standards

Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.

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Tetradecanoic Acid 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4-oxo-4H-pyrido[1,2a]pyrimidin-9-yl ester

CAS: 1172995-11-7
Formula: C₃₇H₅₃FN₄O₄
MW: 636.8 g/mol

ZX-026291

Tetraethyl Dithiodisuccinate (TDDS)

CAS: 2090-25-7
Formula: C₁₆H₂₆O₈S₂
MW: 410.5 g/mol

ZX-025483

Tetraethyl Enepentamine

CAS: 112-57-2
Formula: C₈H₂₃N₅
MW: 189.3 g/mol

ZX-034135

Tetrahydro Curcumin

CAS: 36062-04-1
Formula: C₂₁H₂₄O₆
MW: 372.4 g/mol

ZX-024067

Tetrahydrocannabinol

CAS: 1972-08-3
Formula: C₂₁H₃₀O₂
MW: 314.5 g/mol

ZX-047957

Tetrahydrocannabivarin

CAS: 31262-37-0
Formula: C₁₉H₂₆O₂
MW: 286.4 g/mol

ZX-033143

Tetrahydrocinacalcet Hydrochloride

CAS: 1229225-43-7
Formula: C₂₂H₂₇ClF₃N
MW: 397.9 g/mol

ZX-028612

Tetrahydrocortisone 3-Glucuronide

CAS: 26312-91-4
Formula: C₂₇H₄₀O₁₁
MW: 540.6 g/mol

ZX-042796

Tetrahydrofuran D8

CAS: 1693-74-9
Formula: C₄H₈O
MW: 80.15 g/mol

ZX-035872

Tetrahydrogestrinone

CAS: 618903-56-3
Formula: C₂₁H₂₈O₂
MW: 312.4 g/mol

ZX-045276

Tetrahydropiperine

CAS: 23434-88-0
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

ZX-031394

Tetrahydrothebaine

CAS: 41714-53-8
Formula: C₁₉H₂₅NO₃
MW: 315.4 g/mol

ZX-047859

Tetrahydrozoline

CAS: 84-22-0
Formula: C₁₃H₁₆N₂
MW: 200.28 g/mol

ZX-044583

Tetrahydrozoline Hydrochloride

CAS: 522-48-5
Formula: C₁₃H₁₇ClN₂
MW: 236.74 g/mol

ZX-027210

TetraiSopropyl (chloromethylene)bis(phosphonate)

CAS: 20107-67-9
Formula: C₁₃H₂₉ClO₆P₂
MW: 378.76 g/mol

ZX-031451

Tetrakis(acetonitrile)copper(I) hexafluorophosphate

CAS: 64443-05-6
Formula: C₈H₁₂CuF₆N₄P
MW: 372.72 g/mol

ZX-046405

Tetramethyluric Acid

CAS: 2309-49-1
Formula: C₉H₁₂N₄O₃
MW: 224.22 g/mol

ZX-031458

Tetramisole Hydrochloride

CAS: 5086-74-8
Formula: C₁₁H₁₃ClN₂S
MW: 240.75 g/mol

ZX-036277

Tetramisole-d5 Hydrochloride

CAS: 1173021-85-6
Formula: C₁₁H₁₃ClN₂S
MW: 245.78 g/mol

ZX-043192

Tetrapropyltin

CAS: 2176-98-9
Formula: C₁₂H₂₈Sn
MW: 291.06 g/mol

ZX-035147

Tetraxetan USP Related Compound A

CAS: 2101625-18-5
Formula: C₁₈H₃₂N₄O₈
MW: 432.5 g/mol

ZX-006033

Tetraxetan USP Related Compound A (TFA Salt)

CAS: 2101625-18-5
Formula: C₁₈H₃₂N₄O₈
MW: 432.5 g/mol

ZX-006034

Tetrazepam EP impurity C

CAS: 1784-78-7
Formula: C₁₆H₁₉ClN₂O
MW: 290.79 g/mol

ZX-047860

Tetrazepam EP Impurity E

CAS: 10379-11-0
Formula: C₁₅H₁₅ClN₂O
MW: 274.74 g/mol

ZX-047962

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