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Impurities

SynThink is a producer and supplier of a number of pharmaceutical Reference Standards (Impurity Standards) which are required for pharmaceutical companies to study quality, stability and biological safety of pharmaceutical products. Many API Impurities are available in our stock.

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Impurities, Rilpivirine

Rilpivirine amide 1 impurity

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In Stock

CAS No.

: 500288-66-4

Mol F.

: C22H20N6O

Mol W.

: 384.43

Cat No.

: SA25406

Impurities, Rilpivirine

Rilpivirine Chloro Impurity

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In Stock

CAS No.

: 244768-32-9

Mol F.

: C11H7ClN4

Mol W.

: 230.65

Cat No.

: SA25410

Impurities, Rilpivirine

Rilpivirine Desmethyl Impurity

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In Stock

CAS No.

: 500292-48-8

Mol F.

: C21H16N6

Mol W.

: 352.4

Cat No.

: SA25420

Impurities, Nitrosamine

Rilpivirine Hydrochloride nitrosamine impurity

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C22H17N7O

Mol W.

: 395.4

Cat No.

: SA44607

Impurities, Rilpivirine

Rilpivirine Hydroxy Impurity

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In Stock

CAS No.

: 189956-45-4

Mol F.

: C11H8N4O

Mol W.

: 212.21

Cat No.

: SA25409

Impurities, Rilpivirine

Rilpivirine Nitrile Impurity

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In Stock

CAS No.

: NA

Mol F.

: C11H12N2

Mol W.

: 172.23

Cat No.

: SA25414

Ezetimibe, Impurities

Ring opened ezetimibe impurity

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In Stock

CAS No.

: 1197811-72-5

Mol F.

: C24H23F2NO3

Mol W.

: 411.44

Cat No.

: SA14847

Impurities, Rivaroxaban

RIV1-dimer-R Isomer

$100.00 25 mg

In Stock

CAS No.

: 1643354-27-1

Mol F.

: C32H30N4O8

Mol W.

: 598.61

Cat No.

: SA18624

Impurities, Rivaroxaban

RIV1-dimer-S Isomer

$100.00 25 mg

In Stock

CAS No.

Mol F.

: C32H30N4O8

Mol W.

: 598.6

Cat No.

: SA18627

Impurities, Rivaroxaban

Rivaroxaban 3-Chloro Isomer

$195.00 25 mg

In Stock

CAS No.

Mol F.

: C19H18ClN3O5S

Mol W.

: 435.88

Cat No.

: SA18608

Impurities, Rivaroxaban

Rivaroxaban Amine Impurity

$80.00 25 mg

In Stock

CAS No.

: 446292-10-0 (base); 898543-06-1 (HCl salt)

Mol F.

: C₁₄H₁₈ClN₃O₄

Mol W.

: 327.76

Cat No.

: SA18602

Impurities, Rivaroxaban

Rivaroxaban Degradation Product 1

$150.00 25 mg

In Stock

CAS No.

: 1816946-19-6

Mol F.

: C13H19N3O2

Mol W.

: 449.31

Cat No.

: SA18615

Impurities, Rivaroxaban

Rivaroxaban Descarbanyl Bisthiphene Impurity

$295.00 25 mg

In Stock

CAS No.

: 1838133-00-8

Mol F.

: C23H21Cl2N3O5S2

Mol W.

: 554.47

Cat No.

: SA18619

Impurities, Rivaroxaban

Rivaroxaban Descarbony Open-ring Impurity; Rivaroxaban-RVXRC-11

$395.00 25 mg

In Stock

CAS No.

Mol F.

: C18H23Cl2N3O5S

Mol W.

: 427.902●72.92

Cat No.

: SA18612

Impurities, Rivaroxaban

Rivaroxaban Descarbonyl Impurity

$195.00 25 mg

In Stock

CAS No.

: 721401-53-2; 482305-98-6

Mol F.

: C18H20ClN3O4S

Mol W.

: 409.89

Cat No.

: SA18611

Impurities, Rivaroxaban

Rivaroxaban Diol

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In Stock

CAS No.

: 1160170-00-2

Mol F.

: C₁₉H₂₀ClN₃O₆S

Mol W.

: 453.9

Cat No.

: SA18607

Impurities, Rivaroxaban

Rivaroxaban EP Impurity I

$250.00 25 mg

In Stock

CAS No.

: 1151893-81-0

Mol F.

: C24H21Cl2N3O7S2

Mol W.

: 598.48

Cat No.

: SA18620

Impurities, Rivaroxaban

Rivaroxaban Impurity B

$100.00 25 mg

In Stock

CAS No.

Mol F.

: C16H19N3O6

Mol W.

: 349.34

Cat No.

: SA18617

Impurities, Rivaroxaban

Rivaroxaban Impurity C

$80.00 25 mg

In Stock

CAS No.

: 24065-33-6

Mol F.

: C₅H₃ClO₂S

Mol W.

: 162.59

Cat No.

: SA18603

Impurities, Rivaroxaban

Rivaroxaban Impurity E

$80.00 25 mg

In Stock

CAS No.

: 97799-98-9

Mol F.

: C₆H₆ClNOS

Mol W.

: 175.64

Cat No.

: SA18610

Impurities, Rivaroxaban

Rivaroxaban Impurity H

$100.00 25 mg

In Stock

CAS No.

: 1429334-00-8

Mol F.

: C16H19N3O5

Mol W.

: 333.34

Cat No.

: SA18613

Impurities, Rivaroxaban

Rivaroxaban Nitroso Impurity 1

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In Stock

CAS No.

: 25413-76-7

Mol F.

: C8H10N2O2

Mol W.

: 166.18

Cat No.

: SA18634

Impurities, Rivaroxaban

Rivaroxaban Nitroso Impurity 5

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In Stock

CAS No.

Mol F.

: C13H16ClN3O4

Mol W.

: 313.7

Cat No.

: SA18632

Impurities, Rivaroxaban

Rivaroxaban open ring dimer

$250.00 25 mg

In Stock

CAS No.

: 1632463-24-1

Mol F.

: C₃₈H₃₆Cl₂N₆O₁₀S₂

Mol W.

: 871.76

Cat No.

: SA18621

Impurities, Rivaroxaban

Rivaroxaban Open-Ring acid Impurity

$295.00 25 mg

In Stock

CAS No.

: 931204-39-6; 931117-61-2

Mol F.

: C19H20ClN3O6S

Mol W.

: 453.9

Cat No.

: SA18614

Impurities, Rivaroxaban

Rivaroxaban Phthalamide Dimer

$100.00 25 mg

In Stock

CAS No.

: 1365267-36-2

Mol F.

: C₃₆H₃₆N₆O₁₀

Mol W.

: 712.71

Cat No.

: SA18605

Impurities, Rivaroxaban

Rivaroxaban Phthalimido Descarbonyl Impurity

$80.00 25 mg

In Stock

CAS No.

: 446292-07-5

Mol F.

: C21H21N3O5

Mol W.

: 395.41

Cat No.

: SA18625

Impurities, Rivaroxaban

Rivaroxaban Phthalimido Descarbonyl Nitroso Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C21H20N4O6

Mol W.

: 424.41

Cat No.

: SA18633

Impurities, Rivaroxaban

Rivaroxaban Phthalimido Impurity

$80.00 25 mg

In Stock

CAS No.

: 446292-08-6

Mol F.

: C22H19N3O6

Mol W.

: 421.40

Cat No.

: SA18609

Impurities, Rivaroxaban

Rivaroxaban Related Compound H; 4,5-Dichlorothiophene Rivaroxaban

$165.00 25 mg

In Stock

CAS No.

: 1770812-37-7

Mol F.

: C19H17Cl2N3O5S

Mol W.

: 470.33

Cat No.

: SA18622

Impurities, Rivaroxaban

Rivaroxaban Urea Dimer

$100.00 25 mg

In Stock

CAS No.

: 1365267-35-1

Mol F.

: C₂₉H₃₂N₆O₉

Mol W.

: 608.6

Cat No.

: SA18604

Impurities, Rosuvastatin

Rosuvastatin (3R,5R)-Isomer t-Butyl Ester

$350.00 25 mg

In Stock

CAS No.

: 2162136-65-2

Mol F.

: C26H36FN3O6S

Mol W.

: 537.64

Cat No.

: SA12170

Impurities, Rosuvastatin

Rosuvastatin (4R,6R) acetonide t-Butyl Ester

$350.00 25 mg

In Stock

CAS No.

: 2758676-77-4

Mol F.

: C29H40FN3O6S

Mol W.

: 577.71

Cat No.

: SA121101

Impurities, Rosuvastatin

Rosuvastatin (4S,6S) Acetonide t-Butyl Ester

$350.00 25 mg

In Stock

CAS No.

: 1378943-63-5

Mol F.

: C29H40FN3O6S

Mol W.

: 577.71

Cat No.

: SA121102

Impurities, Rosuvastatin

Rosuvastatin (6R)-Isomer Sodium Salt

$250.00 25 mg

In Stock

CAS No.

: 854898-48-9 (Acid); 854898-49-0

Mol F.

: C22H27FN3NaO6S

Mol W.

: 503.52

Cat No.

: SA12180

Impurities, Rosuvastatin

Rosuvastatin (6R)-Lactone Impurity

$400.00 25 mg

In Stock

CAS No.

: 854898-46-7

Mol F.

: C22H26FN3O5S

Mol W.

: 463.52

Cat No.

: SA12161

Impurities, Rosuvastatin

Rosuvastatin (6S)-Isomer (Sodium Salt)

$550.00 25 mg

In Stock

CAS No.

: 854898-53-6 (Acid); 854898-50-3

Mol F.

: C22H27FN3O6S.1/2Ca

Mol W.

: 503.52

Cat No.

: SA12164

Impurities, Rosuvastatin

Rosuvastatin (6S)-Isomer Methyl Ester

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C23H30FN3O6S

Mol W.

: 495.56

Cat No.

: SA12167

Impurities, Rosuvastatin

Rosuvastatin 2,3-Anhydro (5S)-Lactone

$200.00 25 mg

In Stock

CAS No.

: 1246665-85-9

Mol F.

: C22H24FN3O4S

Mol W.

: 445.51

Cat No.

: SA12116

Impurities, Rosuvastatin

Rosuvastatin 2,3-Anhydro Acid Calcium Salt

$350.00 25 mg

In Stock

CAS No.

: 1422954-12-8(Acid)

Mol F.

: C22H25FN3O5S.1/2Ca

Mol W.

: 482.51

Cat No.

: SA12123

Impurities, Rosuvastatin

Rosuvastatin 5-Oxo Acid t-Butyl Ester

$250.00 25 mg

In Stock

CAS No.

Mol F.

: C26H34FN3O6S

Mol W.

: 535.63

Cat No.

: SA12129

Impurities, Rosuvastatin

Rosuvastatin anti isomer

$200.00 25 mg

In Stock

CAS No.

: 1094100-06-7

Mol F.

: C22H27FN3O6S . 1/2 Ca

Mol W.

: 500.57

Cat No.

: SA121114

Impurities, Rosuvastatin

Rosuvastatin Calcium EP Impurity K

$350.00 25 mg

In Stock

CAS No.

: 1422954-12-8

Mol F.

: C22H26FN3O5S

Mol W.

: 463.5

Cat No.

: SA121100

Impurities, Rosuvastatin

Rosuvastatin D-5 Enatiomer Impurity

$350.00 25 mg

In Stock

CAS No.

: 2375865-91-9

Mol F.

: C15H26O6

Mol W.

: 302.4

Cat No.

: SA121110

Impurities, Rosuvastatin

Rosuvastatin Diphenylphosphine Oxide

$85.00 25 mg

In Stock

CAS No.

: 289042-10-0

Mol F.

: C28H29FN3O3PS

Mol W.

: 537.59

Cat No.

: SA12108

Impurities, Rosuvastatin

Rosuvastatin EP Impurity A (Acetone-adduct); Rosuvastatin Related compound A

$200.00 25 mg

In Stock

CAS No.

: 1715120-13-0 (Free acid); 1714147-47-3 (Calcium Salt); 1714147-50-8 (Sodium salt)

Mol F.

: C25H33FN3NaO7S

Mol W.

: 561.6

Cat No.

: SA12104

Impurities, Rosuvastatin

Rosuvastatin EP Impurity B

$300.00 25 mg

In Stock

CAS No.

: 1007871-86-4; 1094100-06-7 (acid)

Mol F.

: C22H27FN3O6S•1/2Ca

Mol W.

: 500.61

Cat No.

: SA12102

Impurities, Rosuvastatin

Rosuvastatin EP Impurity C; 5-Oxo Rosuvastatin; Rosuvastatin B2

$150.00 25 mg

In Stock

CAS No.

: 1422619-13-3 (acid);1422514-05-3 (calcium salt); 1620823-61-1 (sodium salt)

Mol F.

: C22H26FN3O6S

Mol W.

: 479.52

Cat No.

: SA12101

Impurities, Rosuvastatin

Rosuvastatin EP Impurity D; Rosuvastatin Lactone

$100.00 25 mg

In Stock

CAS No.

: 503610-43-3

Mol F.

: C22H26FN3O5S

Mol W.

: 463.52

Cat No.

: SA12103

Impurities, Rosuvastatin

Rosuvastatin EP Impurity E (Calcium Salt); Rosuvastatin Related compound B

$400.00 25 mg

In Stock

CAS No.

: 2226413-61-0 (acid)

Mol F.

: C38H45F2N6O9S2.1/2Ca

Mol W.

: 851.94

Cat No.

: SA12106