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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

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Reference Standard

Lenalidomide Impurity-5

Lenalidomide Impurity-5

Formula: C₂₀H₁₅N₃O₆S
MW: 425.41 g/mol

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Reference Standard

Lenalidomide impurity-7 chemical structure

Lenalidomide impurity-7

CAS: 2197414-55-2
Formula: C₁₃H₁₆N₄O₃
MW: 276.29 g/mol

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Reference Standard

Lenalidomide Methyl Ester Impurity - 2 chemical structure

Lenalidomide Methyl Ester Impurity - 2

CAS: 1240215-87-5
Formula: C₁₄H₁₇N₃O₄
MW: 291.3 g/mol

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Reference Standard

Lenalidomide Methyl Ester Impurity - 3 chemical structure

Lenalidomide Methyl Ester Impurity - 3

CAS: 1198299-53-4
Formula: C₁₄H₁₇N₃O₄
MW: 291.3 g/mol

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Reference Standard

Lenalidomide N-(3-Aminopropanoyl) Hydrochloride chemical structure

Lenalidomide N-(3-Aminopropanoyl) Hydrochloride

CAS: 1407490-89-4
Formula: C₁₆H₁₉ClN₄O₄
MW: 366.8 g/mol

VQ-026400

Reference Standard

Lenalidomide N-Hydroxy Impurity chemical structure

Lenalidomide N-Hydroxy Impurity

CAS: 2717380-87-3
Formula: C₁₃H₁₃N₃O₄
MW: 275.26 g/mol

VQ-005157

Reference Standard

Lenalidomide-N-Formyl Impurity chemical structure

Lenalidomide-N-Formyl Impurity

CAS: 2197414-56-3
Formula: C₁₄H₁₃N₃O₄
MW: 287.27 g/mol

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Reference Standard

Lenvatinib 4-Chloro Impurity chemical structure

Lenvatinib 4-Chloro Impurity

CAS: 771464-30-3
Formula: C₁₁H₈ClNO₃
MW: 237.64 g/mol

VQ-026402

Reference Standard

Lenvatinib cyclopropylcarbamoyl impurity chemical structure

Lenvatinib cyclopropylcarbamoyl impurity

CAS: 2412398-76-4
Formula: C₂₅H₂₄ClN₅O₅
MW: 509.9 g/mol

VQ-037949

Reference Standard

lenvatinib Impurity (Stage-1)

lenvatinib Impurity (Stage-1)

Formula: C₂₃H₂₀ClN₃O₅
MW: 453.88 g/mol

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Reference Standard

Lenvatinib Impurity 11 (Dimer Impurity) chemical structure

Lenvatinib Impurity 11 (Dimer Impurity)

CAS: 2712530-40-8
Formula: C₄₅H₄₂Cl₂N₈O₈
MW: 893.8 g/mol

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Reference Standard

Lenvatinib Impurity 18 chemical structure

Lenvatinib Impurity 18

CAS: 2143930-75-8
Formula: C₃₅H₂₆Cl₂N₆O₇
MW: 713.5 g/mol

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Reference Standard

Lenvatinib Impurity 21 chemical structure

Lenvatinib Impurity 21

CAS: 2023826-82-4
Formula: C₁₂H₁₁NO₄
MW: 233.22 g/mol

VQ-037945

Reference Standard

Lenvatinib impurity 4 chemical structure

Lenvatinib impurity 4

CAS: 2380197-90-8
Formula: C₂₈H₂₂ClN₅O₅
MW: 544 g/mol

VQ-005162

Reference Standard

Lenvatinib Impurity 5 chemical structure

Lenvatinib Impurity 5

CAS: 2613141-84-5
Formula: C₃₁H₂₉ClN₆O₆
MW: 617 g/mol

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Reference Standard

Lenvatinib Impurity-1 chemical structure

Lenvatinib Impurity-1

CAS: 2250242-56-7
Formula: C₂₃H₁₉ClN₄O₄
MW: 450.9 g/mol

VQ-005164

Reference Standard

Lenvatinib N-Ethyl Impurity chemical structure

Lenvatinib N-Ethyl Impurity

CAS: 417719-46-1
Formula: C₂₀H₁₉ClN₄O₄
MW: 414.8 g/mol

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Reference Standard

Lenvatinib N-Ethyl Impurity methanesulfonate salt

Lenvatinib N-Ethyl Impurity methanesulfonate salt

CAS: 2991278-65-8
Formula: C₂₀H₁₉ClN₄O₄ : CH₄O₃S
MW: 510.95 g/mol

VQ-048835

Reference Standard

Lenvatinib Nitrile Impurity

Lenvatinib Nitrile Impurity

CAS: 2983068-19-3
Formula: C₂₄H₁₆ClN₃O₄
MW: 445.86 g/mol

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Reference Standard

Lenvatinib Phenoxy Quinoline Impurity chemical structure

Lenvatinib Phenoxy Quinoline Impurity

CAS: 417722-93-1
Formula: C₁₇H₁₄ClN₃O₃
MW: 343.8 g/mol

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Reference Standard

Lenvatinib Phenoxycarbonyl Impurity

Lenvatinib Phenoxycarbonyl Impurity

Formula: C₃₁H₂₂ClN₃O₇
MW: 583.98 g/mol

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Reference Standard

Lercanidipine Acid chemical structure

Lercanidipine Acid

CAS: 855592-30-2
Formula: C₃₅H₃₉N₃O₆
MW: 597.7 g/mol

VQ-031491

Reference Standard

Lercanidipine Dimethyl Ester Impurity chemical structure

Lercanidipine Dimethyl Ester Impurity

CAS: 21881-77-6
Formula: C₁₇H₁₈N₂O₆
MW: 346.3 g/mol

VQ-022949

Reference Standard

Lercanidipine Ethyl Impurity chemical structure

Lercanidipine Ethyl Impurity

CAS: 786625-22-7
Formula: C₃₇H₄₃N₃O₆
MW: 625.8 g/mol

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