Home / Products / Impurities / Page 45

Impurities

SynThink is a trusted producer and supplier of Pharmaceutical Reference Standards, including Impurity Standards. These materials are essential for pharmaceutical companies conducting research into the quality, stability, and biological safety of drug products. We maintain a robust inventory of API impurities, ready to support your development and regulatory needs.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Impurities, Vildagliptin

Vildagliptin Chloroacetyl Amide (S)-Isomer

$135.00 25 mg

In Stock

CAS No.

: 214398-99-9

Mol F.

: C7H11ClN2O2

Mol W.

: 190.63

Cat No.

: SA23900

Impurities, Vildagliptin

Vildagliptin Chloroacetyl Nitrile (R)-Isomer

$145.00 25 mg

In Stock

CAS No.

: 565452-98-4

Mol F.

: C7H9ClN2O

Mol W.

: 172.61

Cat No.

: SA23901

Impurities, Vildagliptin

Vildagliptin Chloroacetyl Nitrile (S)-Isomer

$135.00 25 mg

In Stock

CAS No.

: 207557-35-5

Mol F.

: C7H9ClN2O

Mol W.

: 172.61

Cat No.

: SA23903

Impurities, Vildagliptin

Vildagliptin Deshydroxy Impurity

$155.00 25 mg

In Stock

CAS No.

: 741657-02-3

Mol F.

: C17H25N3O

Mol W.

: 287.4

Cat No.

: SA23915

Vildagliptin

Vildagliptin Dimer Impurity

$155.00 25 mg

In Stock

CAS No.

: 1036959-23-5

Mol F.

: C24H33N5O3

Mol W.

: 439.55

Cat No.

: SA23912

Impurities, Nitrosamine, Vildagliptin

Vildagliptin N-Nitroso-L-Prolinaminde

Please enquire for price & pack size

In Stock

CAS No.

: 79108-51-3

Mol F.

: C5H9N3O2

Mol W.

: 143.1

Cat No.

: SA23919

Vortioxetine

Vortioxetine Sulfoxide Impurity

$155.00 50 mg

In Stock

CAS No.

: 1429908-35-9

Mol F.

: C18H22N2OS

Mol W.

: 314.45

Cat No.

: SA50301

Impurities, Zidovudine

Zidovudine EP Impurity A

$75.00 25 mg

In Stock

CAS No.

: 3056-17-5

Mol F.

: C10H12N2O4

Mol W.

: 224.21

Cat No.

: SA12604

Impurities, Zidovudine

Zidovudine EP Impurity B

$155.00 25 mg

In Stock

CAS No.

: 25526-94-7

Mol F.

: C10H13ClN2O4

Mol W.

: 260.67

Cat No.

: SA12602

Impurities, Zidovudine

Zidovudine EP Impurity C

$70.00 25 mg

In Stock

CAS No.

: 65-71-4

Mol F.

: C5H6N2O2

Mol W.

: 126.11

Cat No.

: SA12605

Impurities, Zolmitriptan

Zolmitriptan EP impurity C | CAS : 1350928-05-0

$295.00 5 mg

In Stock

CAS No.

: 1350928-05-0

Mol F.

Mol W.

Cat No.

: SA11910

Impurities, Zolmitriptan

Zolmitriptan Hydroxymethyl Impurity (USP)

$150.00 10 mg

In Stock

CAS No.

Mol F.

: C17H23N3O3

Mol W.

: 317.4

Cat No.

: SA11909

Impurities, Zolmitriptan

Zolmitriptan N-Oxide

$195.00 25 mg

In Stock

CAS No.

: 251451-30-6

Mol F.

: C16H21N3O3

Mol W.

: 303.36

Cat No.

: SA11903

Impurities, Zolmitriptan

Zolmitriptan R-Isomer

$255.00 50 mg

In Stock

CAS No.

: 139264-24-7

Mol F.

: C16H21N3O2

Mol W.

: 287.36

Cat No.

: SA11901

Impurities, Zolmitriptan

Zolmitriptan USP Related Compound A

$100.00 10 mg

In Stock

CAS No.

: 139264-35-0

Mol F.

: C15H19N3O2

Mol W.

: 273.33

Cat No.

: SA11904

Impurities, Zolmitriptan

Zolmitriptan USP Related Compound B; Zolmitriptan EP Impurity F

$295.00 50 mg

In Stock

CAS No.

: 139264-69-0

Mol F.

: C15H23N3O

Mol W.

: 261.36

Cat No.

: SA11905

Brivaracetam, Impurities

αR-Brivaracetam

$395.00 25 mg

In Stock

CAS No.

: 357337-00-9

Mol F.

: C11H20N2O2

Mol W.

: 212.3

Cat No.

: SA47304

Brivaracetam, Impurities

αR,4S-Brivaracetam

$395.00 25 mg

In Stock

CAS No.

: 357336-99-3

Mol F.

: C11H20N2O2

Mol W.

: 212.29

Cat No.

: SA47302

Impurities, Propranolol

β-Naphthol

Please enquire for price & pack size

In Stock

CAS No.

: 135-19-3

Mol F.

: C10H8O

Mol W.

: 144.173

Cat No.

: SA24614

Fluorometholone, Impurities

Δ-16(17)-Fluorometholone

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C22H27FO3

Mol W.

: 358.45

Cat No.

: SA38413

Fluorometholone, Impurities

Δ-9(11)-Fluorometholone

Please enquire for price & pack size

In Stock

CAS No.

: 110664-42-1

Mol F.

: C22H28O3

Mol W.

: 340.45

Cat No.

: SA38412

Hydrocortisone Valerate, Impurities

Δ9(11)-Hydrocortisone-17-valerate

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C26H36O5

Mol W.

: 428.56

Cat No.

: SA27306

Impurities, Lamivudine

(±)-Trans-lamivudine (Mixture of Diastereomers)

Please enquire for price & pack size

Limited Stock

CAS No.

: 141434-39-1

Mol F.

: C8H11N3O3S

Mol W.

: 229.3

Cat No.

: SA22322

Impurities, Tadalafil

(1S, 3S) Open Ring Tadalafil Impurity

Please enquire for price & pack size

Limited Stock

CAS No.

: 629652-42-2

Mol F.

: C₂₂H₁₉ClN₂O₅

Mol W.

: 426.85

Cat No.

: SA20904

Impurities, Lamivudine

(2R,5S)-L-Menthol-5-(4-amino-2-oxo-1(2H)-pyrimidinyl)-1,3-oxathiolane-2-carboxylate

Please enquire for price & pack size

Limited Stock

CAS No.

: 147027-10-9

Mol F.

: C₁₈H₂₇N₃O₄S

Mol W.

: 381.49

Cat No.

: SA22308

Impurities, Norethindrone

∆-5(10)-Norethindrone Acetate; Norethisterone Acetate EP Impurity B

Please enquire for price & pack size

Limited Stock

CAS No.

: 19637-28-6

Mol F.

: C22H28O3

Mol W.

: 340.46

Cat No.

: SA13401

Clotrimazole, Impurities

1-chloro-2-(dichloromethyl)benzene

Please enquire for price & pack size

Limited Stock

CAS No.

: 88-66-4

Mol F.

: C7H5Cl3

Mol W.

: 195.46

Cat No.

: SA11603

Fluorometholone, Impurities

1,2-dihydro Fluorometholone

Please enquire for price & pack size

Limited Stock

CAS No.

: 378-36-9

Mol F.

: C22H31FO4

Mol W.

: 378.48

Cat No.

: SA38410

Betamethasone Dipropionate, Impurities

1,2-Dihydro-Betamethasone

$195.00 25 mg

Limited Stock

CAS No.

: 560-34-9

Mol F.

: C22H31FO5

Mol W.

: 394.48

Cat No.

: SA14511

Impurities, Triamcinolone Acetonide

1,2-Dihydrotriamcinolone

$95.00 25 mg

Limited Stock

CAS No.

Mol F.

: C21H29FO6

Mol W.

: 396.45

Cat No.

: SA30215

Impurities, Oxcarbazepine

11-Keto Oxcarbazepine; Oxcarbazepine EP Impurity I

$395.00 25 mg

Limited Stock

CAS No.

: 537693-29-1

Mol F.

: C15H10N2O3

Mol W.

: 266.25

Cat No.

: SA12501

Triamcinolone Acetonide

11-Oxo Triamcinolone

$295.00 25 mg

In Stock

CAS No.

: 3107-69-5

Mol F.

: C₂₁H₂₅FO₆

Mol W.

: 392.42

Cat No.

: SA30212

Budesonide, Impurities

16-HPA Impurity N-2

$395.00 25 mg

Limited Stock

CAS No.

Mol F.

: C23H28O6

Mol W.

: 400.46

Cat No.

: SA14130

Impurities, Raloxifene

2-(4-Hydroxyphenyl)benzo[b]thiophen-6-ol Bimesylate

Please enquire for price & pack size

Limited Stock

CAS No.

: 84449-65-0

Mol F.

: C16H14O6S3

Mol W.

: 398.47

Cat No.

: SA24923

Emtricitabine, Impurities

2-epi-Emtricitabine; Emtricitabine 2-Epimer

$245.00 5 mg

Limited Stock

CAS No.

: 145416-34-8

Mol F.

: C₈H₁₀FN₃O₃S

Mol W.

: 247.25

Cat No.

: SA22903

Etravirine, Impurities

3-Amino bromo Impurity

Please enquire for price & pack size

Limited Stock

CAS No.

: 1398507-09-9

Mol F.

: C11H7BrClN5

Mol W.

: 324.56

Cat No.

: SA26109

Aspirin, Impurities

4-Hydroxyisophthalic Acid

Please enquire for price & pack size

Limited Stock

CAS No.

: 636-46-4

Mol F.

: C8H6O5

Mol W.

: 182.13

Cat No.

: SA28511

Impurities, Uracil

5-Methoxypyrimidine-4,6-diol

Please enquire for price & pack size

Limited Stock

CAS No.

: 5193-84-0

Mol F.

: C5H6N2O3

Mol W.

: 142.11

Cat No.

: SA45301

Exemestane, Impurities

6 beta-methoxymethyl exemestane imp

Please enquire for price & pack size

Limited Stock

CAS No.

: NA

Mol F.

: C21H26O3

Mol W.

: 326.43

Cat No.

: SA19128

Estradiol, Impurities

6-Dehydro Estradiol 17-Valerate; Estradiol Valerate Impurity G

Please enquire for price & pack size

Limited Stock

CAS No.

: 1313382-25-0

Mol F.

: C₂₃H₃₀O₃

Mol W.

: 354.48

Cat No.

: SA13209

Exemestane, Impurities

6-Formyl-17α-hydroxy Exemestane Impurity

Please enquire for price & pack size

Limited Stock

CAS No.

Mol F.

: C20H24O3

Mol W.

: 312.4

Cat No.

: SA19112

Impurities, Testosterone

6-Keto-testosterone Cypionate

Please enquire for price & pack size

Limited Stock

CAS No.

Mol F.

: C27H38O4

Mol W.

: 426.59

Cat No.

: SA16213

Hydrocortisone Valerate, Impurities

6-αβ-hydroxyhydrocorti-21-Valerate

Please enquire for price & pack size

Limited Stock

CAS No.

: NA

Mol F.

: C26H38O7

Mol W.

: 462.57

Cat No.

: SA27314

Hydrocortisone Valerate, Impurities

6(α/β)-Hydroxy-hydrocortisone-17-valerate

Please enquire for price & pack size

Limited Stock

CAS No.

: NA

Mol F.

: C26H38O7

Mol W.

: 462.57

Cat No.

: SA27308

Bromfenac, Impurities

7-(4-Bromobenzoyl)-3,3-dibromo-1,3-dihydro-2H-indol-2-one

Please enquire for price & pack size

Limited Stock

CAS No.

: 1797880-03-5

Mol F.

: C15H8Br3NO2

Mol W.

: 473.94

Cat No.

: SA18912

Impurities, Prazosin

7-O-Desmethyl Prazosin

Please enquire for price & pack size

Limited Stock

CAS No.

: 60548-06-3

Mol F.

: C18H19N5O4

Mol W.

: 369.37

Cat No.

: SA24209

Aciclovir, Impurities

Aciclovir EP Impurity K

$255.00 5 mg

Limited Stock

CAS No.

: 1797131-64-6

Mol F.

: C17H22N10O6

Mol W.

: 462.42

Cat No.

: SA21418

Amoxicillin, Impurities

Amoxicillin EP Impurity F

Please enquire for price & pack size

Limited Stock

CAS No.

: 126247-63-0

Mol F.

: C10H8N2O2

Mol W.

: 188.2

Cat No.

: SA15316

Azathioprine, Impurities

Azathioprine EP Impurity A

Please enquire for price & pack size

Limited Stock

CAS No.

: 4531-54-8

Mol F.

: C4H6N4O2

Mol W.

: 142.12

Cat No.

: SA17902

Betamethasone Dipropionate, Impurities

Betamethasone Dipropionate EP Impurity F

$145.00 25 mg

Limited Stock

CAS No.

: 66917-44-0

Mol F.

: C28H36O7

Mol W.

: 484.58

Cat No.

: SA14509