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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

S-Mirtazapine chemical structure

CAS: 61337-87-9
Formula: C₁₇H₁₉N₃
MW: 265.35 g/mol

VQ-035146

Reference Standard

S-Modafinil chemical structure

CAS: 112111-47-4
Formula: C₁₅H₁₅NO₂S
MW: 273.4 g/mol

VQ-043779

Reference Standard

S-Nimodipine chemical structure

CAS: 77940-93-3
Formula: C₂₁H₂₆N₂O₇
MW: 418.4 g/mol

VQ-032164

Reference Standard

S-Norepinephrine chemical structure

S-Norepinephrine

CAS: 2349414-30-6
Formula: C₉H₁₃NO₃
MW: 183.2 g/mol

VQ-032206

Reference Standard

S-Pantoprazole sodium chemical structure

S-Pantoprazole sodium

CAS: 160488-53-9
Formula: C₁₆H₁₄F₂N₃NaO₄S
MW: 405.4 g/mol

VQ-041318

Reference Standard

S-Propyl-2-thiobarbituric Acid chemical structure

S-Propyl-2-thiobarbituric Acid

CAS: 145783-12-6
Formula: C₇H₁₀N₂O₂S
MW: 186.23 g/mol

VQ-023896

Reference Standard

S-Propyl-5-nitro-2-thiobarbituric Acid chemical structure

S-Propyl-5-nitro-2-thiobarbituric Acid

CAS: 145783-13-7
Formula: C₇H₉N₃O₄S
MW: 231.23 g/mol

VQ-028368

Reference Standard

S-Ramosetron chemical structure

CAS: 132036-90-9
Formula: C₁₇H₁₇N₃O
MW: 279.34 g/mol

VQ-043773

Reference Standard

S-Tetrahydrobiopterin Dihydrochloride chemical structure

S-Tetrahydrobiopterin Dihydrochloride

CAS: 69056-39-9
Formula: C₉H₁₇Cl₂N₅O₃
MW: 314.17 g/mol

VQ-027981

Reference Standard

S-Thioctic Acid Tromethamine chemical structure

S-Thioctic Acid Tromethamine

CAS: 248914-06-9
Formula: C₁₂H₂₅NO₅S₂
MW: 327.5 g/mol

VQ-031592

Reference Standard

S-Tovorafenib chemical structure

CAS: 1096708-73-4
Formula: C₁₇H₁₂Cl₂F₃N₇O₂S
MW: 506.3 g/mol

VQ-028472

Reference Standard

S-Triazolo [3,4-a] phthalazine chemical structure

S-Triazolo [3,4-a] phthalazine

CAS: 234-80-0
Formula: C₉H₆N₄
MW: 170.17 g/mol

VQ-022792

Reference Standard

s,s-endo-Lurasidone Hydrochloride chemical structure

s,s-endo-Lurasidone Hydrochloride

CAS: 1318074-27-9
Formula: C₂₈H₃₆N₄O₂S
MW: 492.7 g/mol

VQ-031693

Reference Standard

S,S-Labetalol chemical structure

CAS: 83167-24-2
Formula: C₁₉H₂₄N₂O₃
MW: 328.4 g/mol

VQ-035028

Reference Standard

S,S'-((3Z,3'Z)-((Hydroxyphosphoryl)bis(oxy))bis(4-(N-((4-amino-2-methylpyrimidin-5-yl)methyl)formamido)pent-3-ene-1,3-diyl)) Dibenzothioate

S,S'-((3Z,3'Z)-((Hydroxyphosphoryl)bis(oxy))bis(4-(N-((4-amino-2-methylpyrimidin-5-yl)methyl)formamido)pent-3-ene-1,3-diyl)) Dibenzothioate

CAS: 3027322-14-8
Formula: C₃₈H₄₃N₈O₈PS₂
MW: 834.9 g/mol

VQ-047548

Reference Standard

S(-)-N,N-Dimethyl-3-hydroxy-3-(2-thienyl)-1-propanamine chemical structure

S(-)-N,N-Dimethyl-3-hydroxy-3-(2-thienyl)-1-propanamine

CAS: 132335-44-5
Formula: C₉H₁₅NOS
MW: 185.29 g/mol

VQ-025441

Reference Standard

S(+)-Hydroxy Chloroquine chemical structure

S(+)-Hydroxy Chloroquine

CAS: 137433-24-0
Formula: C₁₈H₂₆ClN₃O
MW: 335.9 g/mol

VQ-031107

Reference Standard

Sabinene chemical structure

CAS: 3387-41-5
Formula: C₁₀H₁₆
MW: 136.23 g/mol

VQ-042052

Reference Standard

Saccharin Sodium Hydrate chemical structure

Saccharin Sodium Hydrate

CAS: 82385-42-0
Formula: C₇H₆NNaO₄S
MW: 223.18 g/mol

VQ-042053

Reference Standard

Sacubitril (2R,4R) Isomer chemical structure

Sacubitril (2R,4R) Isomer

CAS: 2259708-00-2
Formula: C₂₄H₂₉NO₅
MW: 411.5 g/mol

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Reference Standard

Sacubitril (2R,4R) Isomer Calcium Salt

Sacubitril (2R,4R) Isomer Calcium Salt

CAS: 3081732-59-1
Formula: C₂₄H₂₉NO_5.1/2Ca
MW: 431.53 g/mol

VQ-005853

Reference Standard

Sacubitril (3R,5S)-Pyrrolidinone Impurity chemical structure

Sacubitril (3R,5S)-Pyrrolidinone Impurity

CAS: 1038924-70-7
Formula: C₁₈H₁₉NO
MW: 265.3 g/mol

VQ-023706

Reference Standard

Sacubitril Amino Acid Impurity chemical structure

Sacubitril Amino Acid Impurity

CAS: 1038924-71-8
Formula: C₁₈H₂₂ClNO₂
MW: 319.8 g/mol

VQ-005854

Reference Standard

Sacubitril Butyl Ester Impurity of Stage II

Sacubitril Butyl Ester Impurity of Stage II

Formula: C₂₆H₃₃NO₅
MW: 439.54 g/mol

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