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Impurities & Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

578 pharmacopeial impurities (ep / usp / bp) with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

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427in stock

COA + SDSwith every lot

Reference Standard

Losartan EP Impurity F chemical structure

Losartan EP Impurity F

CAS: 1332713-64-0
Formula: C₂₅H₂₉ClN₆O
MW: 465 g/mol

VQ-026514

Reference Standard

Losartan EP Impurity H chemical structure

Losartan EP Impurity H

CAS: 133909-99-6
Formula: C₄₁H₃₇ClN₆O
MW: 665.2 g/mol

VQ-026515

Reference Standard

Losartan EP Impurity I chemical structure

Losartan EP Impurity I

CAS: 1006062-28-7
Formula: C₄₁H₃₇ClN₆O
MW: 665.2 g/mol

VQ-026516

Reference Standard

Losartan EP Impurity J chemical structure

Losartan EP Impurity J

CAS: 1006062-27-6
Formula: C₂₄H₂₅ClN₆O₂
MW: 464.9 g/mol

VQ-026517

Reference Standard

Losartan EP Impurity K chemical structure

Losartan EP Impurity K

CAS: 114798-36-6
Formula: C₂₂H₂₁ClN₆O
MW: 420.9 g/mol

VQ-026518

Reference Standard

Losartan EP Impurity L chemical structure

Losartan EP Impurity L

CAS: 230971-71-8
Formula: C₄₄H₄₄Cl₂N₁₂O
MW: 827.8 g/mol

VQ-026520

Reference Standard

Losartan EP Impurity M chemical structure

Losartan EP Impurity M

CAS: 230971-72-9
Formula: C₄₄H₄₄Cl₂N₁₂O
MW: 827.8 g/mol

VQ-026521

Reference Standard

Losartan Potassium EP Impurity C chemical structure

Losartan Potassium EP Impurity C

CAS: 860644-28-6
Formula: C₂₂H₂₂ClKN₆O
MW: 465 g/mol

VQ-031648

Reference Standard

Lovastatin EP Impurity A chemical structure

Lovastatin EP Impurity A

CAS: 73573-88-3
Formula: C₂₃H₃₄O₅
MW: 390.5 g/mol

VQ-023007

Reference Standard

Lovastatin EP Impurity B chemical structure

Lovastatin EP Impurity B

CAS: 75225-50-2
Formula: C₂₄H₃₇NaO₆
MW: 444.5 g/mol

VQ-023008

Reference Standard

Lovastatin EP Impurity B chemical structure

Lovastatin EP Impurity B

CAS: 75225-51-3
Formula: C₂₄H₃₈O₆
MW: 422.6 g/mol

VQ-048964

Reference Standard

Lovastatin EP Impurity C chemical structure

Lovastatin EP Impurity C

CAS: 109273-98-5
Formula: C₂₄H₃₄O₄
MW: 386.5 g/mol

VQ-026524

Reference Standard

Lovastatin EP Impurity D chemical structure

Lovastatin EP Impurity D

CAS: 149756-62-7
Formula: C₄₈H₇₂O₁₀
MW: 809.1 g/mol

VQ-031659

Reference Standard

Lovastatin EP Impurity E chemical structure

Lovastatin EP Impurity E

CAS: 77517-29-4
Formula: C₂₄H₃₈O₅
MW: 406.6 g/mol

VQ-026525

Reference Standard

Lovastatin EP Impurity F chemical structure

Lovastatin EP Impurity F

CAS: 1048973-04-1
Formula: C₂₄H₃₄O₅
MW: 402.5 g/mol

VQ-026527

Reference Standard

Lufenuron EP Impurity B chemical structure

Lufenuron EP Impurity B

CAS: 2767988-84-9
Formula: C₁₄H₈Cl₂F₂N₂O₃
MW: 361.1 g/mol

VQ-043507

Reference Standard

Lurasidone EP Impurity B chemical structure

Lurasidone EP Impurity B

CAS: 186204-36-4
Formula: C₁₉H₂₆N₃S⁺
MW: 328.5 g/mol

VQ-006495

Reference Standard

Lurasidone EP Impurity B (Methanesulfonate salt) chemical structure

Lurasidone EP Impurity B (Methanesulfonate salt)

CAS: 186204-37-5
Formula: C₂₀H₂₉N₃O₃S₂
MW: 423.6 g/mol

In stock

Reference Standard

Lymecycline EP Impurity B Hydrochloride

Lymecycline EP Impurity B Hydrochloride

CAS: 7322-80-7
Formula: C₂₃H₂₅NO₈.HCl
MW: 479.91 g/mol

VQ-048995

Reference Standard

Lynestrenol EP Impurity B chemical structure

Lynestrenol EP Impurity B

CAS: 58311-09-4
Formula: C₂₀H₂₈O
MW: 284.4 g/mol

VQ-038226

Reference Standard

Lynestrenol EP Impurity C chemical structure

Lynestrenol EP Impurity C

CAS: 5225-38-7
Formula: C₂₀H₃₀O
MW: 286.5 g/mol

VQ-031701

Reference Standard

Malathion EP Impurity C chemical structure

Malathion EP Impurity C

CAS: 33779-98-5
Formula: C₉H₁₇O₆PS₂
MW: 316.3 g/mol

VQ-044756

Reference Standard

Manidipine EP Impurity B Hydrochloride

Manidipine EP Impurity B Hydrochloride

CAS: 1332595-98-8
Formula: C₃₆H₄₁ClN₄O₆
MW: 661.2 g/mol

VQ-038253

Reference Standard

Maprotiline Ep impurity C chemical structure

Maprotiline Ep impurity C

CAS: 92202-51-2
Formula: C₁₉H₂₂ClN
MW: 299.8 g/mol

VQ-038255

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