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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, Methylprednisolone

Methylprednisolone EP Impurity A

$125.00 25 mg

In Stock

CAS No.

: 91523-05-6

Mol F.

: C22H28O5

Mol W.

: 372.45

Cat No.

: SA14402

Impurities, Methylprednisolone

Methylprednisolone EP Impurity C

$175.00 25 mg

In Stock

CAS No.

: 61919-52-6

Mol F.

: C20H26O3

Mol W.

: 314.42

Cat No.

: SA14403

Impurities, Methylprednisolone

Methylprednisolone EP Impurity D

$125.00 25 mg

In Stock

CAS No.

: 1338549-02-2

Mol F.

: C22H28O4

Mol W.

: 356.46

Cat No.

: SA14404

Impurities, Methylprednisolone

Methylprednisolone EP Impurity E

$255.00 25 mg

In Stock

CAS No.

: 229019-44-7

Mol F.

: C21H28O4

Mol W.

: 344.44

Cat No.

: SA14406

Impurities, Methylprednisolone

Methylprednisolone EP Impurity G

$125.00 25 mg

In Stock

CAS No.

: 93269-35-3

Mol F.

: C22H28O4

Mol W.

: 356.46

Cat No.

: SA14408

Impurities, Methylprednisolone

Methylprednisolone EP Impurity J

$95.00 25 mg

In Stock

CAS No.

: 53-36-1

Mol F.

: C24H32O6

Mol W.

: 416.51

Cat No.

: SA14410

Impurities, Methylprednisolone

Methylprednisolone EP Impurity L

$355.00 25 mg

In Stock

CAS No.

: 6870-94-6

Mol F.

: C22H30O4

Mol W.

: 358.47

Cat No.

: SA14412

Impurities, Methylprednisolone

Methylprednisolone-17-propionate-11, 21 diacetate (Impurity E)

$125.00 25 mg

In Stock

CAS No.

Mol F.

: C29H38O8

Mol W.

: 514.6

Cat No.

: SA14423

Impurities, Mexiletine

Mexiletine Intermediate

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C16H18O2

Mol W.

: 242.31

Cat No.

: SA50201

Impurities, Miconazole

Miconazole

Please enquire for price & pack size

In Stock

CAS No.

: 22916-47-8

Mol F.

: C18H14Cl4N2O

Mol W.

: 416.13

Cat No.

: SA51500

Impurities, Miconazole

Miconazole EP Impurity B; Econazole

Please enquire for price & pack size

In Stock

CAS No.

: 27220-47-9

Mol F.

: C18H15Cl3N2O

Mol W.

: 381.68

Cat No.

: SA51506

Impurities, Miconazole

Miconazole EP Impurity F

Please enquire for price & pack size

In Stock

CAS No.

: 47447-55-2

Mol F.

: C18H14Cl4N2O

Mol W.

: 416.13

Cat No.

: SA51501

Impurities, Miconazole

Miconazole EP Impurity G; Miconazole 2,5-Isomer

Please enquire for price & pack size

In Stock

CAS No.

: 909277-71-0

Mol F.

: C18H14Cl4N2O

Mol W.

: 416.13

Cat No.

: SA51504

Impurities, Miconazole

Miconazole EP Impurity H

Please enquire for price & pack size

In Stock

CAS No.

: 181931-30-6

Mol F.

: C18H16Cl2N2O

Mol W.

: 347.24

Cat No.

: SA51507

Impurities, Miconazole

Miconazole Impurity H nitarte salt

Please enquire for price & pack size

In Stock

CAS No.

: 203264-09-9

Mol F.

: C18H17Cl2N3O4

Mol W.

: 410.25

Cat No.

: SA51502

Impurities, Miconazole

Miconazole Related Compound A; Econazole EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 24155-42-8

Mol F.

: C11H10Cl2N2O

Mol W.

: 257.11

Cat No.

: SA51503

Impurities, Miconazole

Miconazole Related Compound I

Please enquire for price & pack size

In Stock

CAS No.

: 47363-37-1

Mol F.

: C18H15Cl3N2O

Mol W.

: 381.7

Cat No.

: SA51508

Impurities, Midazolam

Midazolam EP Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 59467-86-6

Mol F.

: C18H14ClN3

Mol W.

: 307.77999999999997

Cat No.

: SA44306

Impurities, Midazolam

Midazolam Impurity E

Please enquire for price & pack size

In Stock

CAS No.

: 59467-64-0

Mol F.

: C16H15ClFN3

Mol W.

: 303.76

Cat No.

: SA44303

Impurities, Midazolam

Midazolam Nitromethylene Compound

Please enquire for price & pack size

In Stock

CAS No.

: 60656-76-0

Mol F.

: C16H11ClFN3O3

Mol W.

: 347.73

Cat No.

: SA44305

Impurities, Milnacipran

Milnacipran EP Impurity B

Please enquire for price & pack size

In Stock

CAS No.

: 85-41-6

Mol F.

: C₈H₅NO₂

Mol W.

: 147.13

Cat No.

: SA24301

Impurities, Milnacipran

Milnacipran EP Impurity C

Please enquire for price & pack size

In Stock

CAS No.

: 70209-83-5

Mol F.

: C11H12O3

Mol W.

: 192.21

Cat No.

: SA24302

Impurities, Milnacipran

Milnacipran EP Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 1353644-49-1

Mol F.

: C15H21NO2

Mol W.

: 247.33

Cat No.

: SA24306

Impurities, Milnacipran

Milnacipran EP Impurity H

Please enquire for price & pack size

In Stock

CAS No.

: 1575528-93-6

Mol F.

: C24H29N3O3

Mol W.

: 407.5

Cat No.

: SA24307

Impurities, Milnacipran

Milnacipran EP Impurity I

Please enquire for price & pack size

In Stock

CAS No.

: 1575528-97-0

Mol F.

: C23H26N2O4

Mol W.

: 394.46

Cat No.

: SA24308

Impurities, Milnacipran

Milnacipran EP Impurity J

Please enquire for price & pack size

In Stock

CAS No.

: 1100753-09-0

Mol F.

: C23H24N2O3

Mol W.

: 376.45

Cat No.

: SA24309

Impurities, Milnacipran

Milnacipran EP Impurity K

Please enquire for price & pack size

In Stock

CAS No.

: 1575529-05-3

Mol F.

: C38H46N4O4

Mol W.

: 622.79

Cat No.

: SA24310

Impurities, Milnacipran

Milnacipran EP Impurity L

Please enquire for price & pack size

In Stock

CAS No.

: 153275-06-0

Mol F.

: C₁₁H₁₁NO

Mol W.

: 173.21

Cat No.

: SA24311

Impurities, Molnupiravir

Molnupiravir Acetyl Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C11H15N3O7

Mol W.

: 301.3

Cat No.

: SA46211

Impurities, Molnupiravir

Molnupiravir Enantiomer

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C13H19N3O7

Mol W.

: 329.31

Cat No.

: SA46208

Impurities, Molnupiravir

Molnupiravir Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 2346620-55-9

Mol F.

: C16H23N3O7

Mol W.

: 369.37

Cat No.

: SA46202

Impurities, Molnupiravir

Molnupiravir Impurity F

Please enquire for price & pack size

In Stock

CAS No.

: 1686124-74-2

Mol F.

: C16H23N3O6

Mol W.

: 353.37

Cat No.

: SA46213

Impurities, Molnupiravir

Molnupiravir IP Impurity I

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C13H19N3O7

Mol W.

: 329.31

Cat No.

: SA46217

Impurities, Molnupiravir

Molnupiravir IP Impurity J

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C12H17N3O7

Mol W.

: 315.28

Cat No.

: SA46218

Impurities, Molnupiravir

Molnupiravir RC 9 (Uridines 5’- (2-methylpropanoate)

Please enquire for price & pack size

In Stock

CAS No.

: 886538-48-3

Mol F.

: C13H18N2O7

Mol W.

: 314.29

Cat No.

: SA46214

Impurities, Mometasone

Mometasone EP Impurity J

$695.00 25 mg

In Stock

CAS No.

: 1370190-55-8

Mol F.

: C28H32Cl2O6

Mol W.

: 535.45

Cat No.

: SA28714

Impurities, Mometasone

Mometasone EP Impurity M

$295.00 25 mg

In Stock

CAS No.

: 57780-86-6

Mol F.

: C22H29ClO4

Mol W.

: 392.91

Cat No.

: SA28716

Impurities, Mometasone

Mometasone EP Impurity N

$295.00 25 mg

In Stock

CAS No.

: 352315-75-4

Mol F.

: C‚ƒHƒClO‡S

Mol W.

: 487.01

Cat No.

: SA28722

Impurities, Mometasone

Mometasone EP Impurity O

$225.00 25 mg

In Stock

CAS No.

: 24916-91-4

Mol F.

: C24H31ClO6

Mol W.

: 450.95

Cat No.

: SA28717

Impurities, Mometasone

Mometasone EP Impurity Q; 17α-Hydroxy-21-chloro-9β,11β-epoxy-16α-methylpregna-1,4-diene-3,20-dione

$255.00 25 mg

In Stock

CAS No.

: 83881-08-7

Mol F.

: C22H27ClO4

Mol W.

: 390.90

Cat No.

: SA28719

Impurities, Mometasone

Mometasone EP Impurity T

$250.00 25 mg

In Stock

CAS No.

Mol F.

: C27H29Cl3O6

Mol W.

: 555.87

Cat No.

: SA28718

Impurities, Mometasone

Mometasone Furoate EP Impurity A

$355.00 25 mg

In Stock

CAS No.

: 83880-65-3

Mol F.

: C27H29ClO5

Mol W.

: 468.97

Cat No.

: SA28701

Impurities, Mometasone

Mometasone Furoate EP Impurity C

$345.00 25 mg

In Stock

CAS No.

: 1305334-31-9

Mol F.

: C27H29CIO6

Mol W.

: 484.97

Cat No.

: SA28703

Impurities, Mometasone

Mometasone Furoate EP Impurity D

$295.00 25 mg

In Stock

CAS No.

: 83881-09-8

Mol F.

: C₂₇H₂₉ClO₆

Mol W.

: 484.97

Cat No.

: SA28704

Impurities, Mometasone

Mometasone Furoate EP Impurity F

$195.00 25 mg

In Stock

CAS No.

: 1305334-30-8

Mol F.

: C₂₇H₂₈Cl₂O₇

Mol W.

: 535.41

Cat No.

: SA28706

Impurities, Mometasone

Mometasone Furoate EP Impurity G

$195.00 25 mg

In Stock

CAS No.

: 105102-22-5

Mol F.

: C22H28Cl2o4

Mol W.

: 427.36

Cat No.

: SA28707

Impurities, Mometasone

Mometasone Furoate EP Impurity H

$255.00 25 mg

In Stock

CAS No.

: 148596-90-1

Mol F.

: C27H31ClO7

Mol W.

: 502.98

Cat No.

: SA28708

Impurities, Mometasone

Mometasone Furoate EP Impurity K; Icometasone

$255.00 25 mg

In Stock

CAS No.

: 4647-20-5

Mol F.

: C22H29ClO5

Mol W.

: 408.91

Cat No.

: SA28721

Impurities, Mometasone

Mometasone Furoate EP Impurity P

$155.00 25 mg

In Stock

CAS No.

Mol F.

: C27H31ClO7

Mol W.

: 502.98

Cat No.

: SA28720

Impurities, Mometasone

Mometasone Furoate EP Impurity R

$395.00 25 mg

In Stock

CAS No.

: 1370190-08-1

Mol F.

: C28H33ClO9S

Mol W.

: 581.07

Cat No.

: SA28723