Bulk Compounds

Following compounds are available in bulk quantity, apart from their standard pack sizes. We have a bulk manufacturing capacity of producing minimum daily quantity of 10kg and upwards.

Recently Searched Impurities

Cetirizine Methyl Ester Dihydrochloride

CAS No.: 83881-48-5
Molecular Formula: C₂₂H₂₉Cl₃N₂O₃
Molecular Weight: 475.84
CAT No.: CS-T-69222
Stock: In-stock

Chlorphenesin Carbamate

CAS No.: 886-74-8
Molecular Formula: C₁₀H₁₂ClNO₄
Molecular Weight: 245.66
CAT No.: CS-CT-00001
Stock: In-stock


CAS No.: 180288-69-1
Molecular Formula: --
Molecular Weight: --
CAT No.: CS-O-14471
Stock: In-stock

trans-p-Coumaric Acid

CAS No.: 501-98-4
Molecular Formula: C₉H₈0₃
Molecular Weight: 164.16
CAT No.: CS-T-13394
Stock: In-stock

Tenofovir Disoproxil Dimer

CAS No.: 1093279-76-5
Molecular Formula: C₃₉H₆₀N₁₀O₂₀P₂
Molecular Weight: 1050.90
CAT No.: CS-T-61643
Stock: In-stock


CAS No.: 52329-60-9
Molecular Formula: C₁₄H₁₁N₃O
Molecular Weight: 237.26
CAT No.: CS-W-00069
Stock: In-stock

Bepotastine N-butyl ester

CAS No.: 1807606-59-2
Molecular Formula: C₂₅H₃₃ClN₂O₃
Molecular Weight: 444.99
CAT No.: CS-O-16622
Stock: In-stock


CAS No.: 7458-08-4
Molecular Formula: C₁₄H₁₂N₂O
Molecular Weight: 224.26
CAT No.: CS-EO-00969
Stock: In-stock

Hydroxyzine pamoate

CAS No.: 10246-75-0
Molecular Formula: C₄₄H₄₃ClN₂O₈
Molecular Weight: 763.27
CAT No.: CS-O-01638
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N-Nitroso Aceclofenac

CAS No.: --
Molecular Formula: C16H12Cl2N2O5
Molecular Weight: 383.18
CAT No.: CS-O-38885
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Levothyroxine EP Impurity F

CAS No.: 911661-90-0
Molecular Formula: C₂₁H₁₃I₆NO₅
Molecular Weight: 1120.76
CAT No.: CS-T-62058
Stock: In-stock


CAS No.: 114311-32-9
Molecular Formula: C₁₅H₁₉N₃O₄
Molecular Weight: 305.33
CAT No.: CS-O-03463
Stock: In-stock

Quercetin 4'-Glucoside

CAS No.: 20229-56-5
Molecular Formula: C₂₁H₂₀O₁₂
Molecular Weight: 464.38
CAT No.: CS-T-61003
Stock: In-stock

Calcipotriol EP Impurity H

CAS No.: --
Molecular Formula: C₅₄H₇₈O₅
Molecular Weight: 807.19
CAT No.: CS-O-11930
Stock: In-stock

N-nitroso Quinapril

CAS No.: --
Molecular Formula: C₂₅H₂₉N₃O₆
Molecular Weight: 467.51 g/mol
CAT No.: CS-O-39063
Stock: In-stock

Pregabalin Impurity 4

CAS No.: 1477840-24-6
Molecular Formula: --
Molecular Weight: --
CAT No.: CS-O-14717
Stock: In-stock

Estrone-3-sulphate sodium

CAS No.: 438-67-5
Molecular Formula: C₁₈H₂₂NaO₅S
Molecular Weight: 373.42
CAT No.: CS-O-11642
Stock: In-stock

Moxifloxacin Related Compound F

CAS No.: 1179992-99-4
Molecular Formula: C₂₂H₂₆FN₃O₄
Molecular Weight: 415.46
CAT No.: CS-O-39590
Stock: In-stock

Orlistat open ring epimer

CAS No.: 130793-28-1
Molecular Formula: C₂₉H₅₅NO₆
Molecular Weight: 513.75
CAT No.: CS-T-55042
Stock: In-stock

Droxidopa Impurity M

CAS No.: 90044-46-5
Molecular Formula: C₁₆H₁₅NO₄
Molecular Weight: 285.29
CAT No.: CS-O-34012
Stock: In-stock


CAS No.: 799773-67-4
Molecular Formula: C₂₆H₃₄N₂O₄
Molecular Weight: 438.56 g/mol
CAT No.: CS-T-91099
Stock: In-stock

Metformin EP impurity C

CAS No.: 1985-46-2
Molecular Formula: C₅H₁₀N₆
Molecular Weight: 154.17
CAT No.: CS-T-20336
Stock: In-stock

Salicylic Acid EP Impurity A (Aspirin Impurity-A)

CAS No.: 99-96-7
Molecular Formula: C₇H₆O₃
Molecular Weight: 138.12
CAT No.: CS-T-42069
Stock: In-stock

Brexpiprazole Impurity 19

CAS No.: 616227-75-9
Molecular Formula: --
Molecular Weight: --
CAT No.: CS-P-07261
Stock: In-stock

N-formyl gatifloxacin

CAS No.: --
Molecular Formula: C20H22FN3O5
Molecular Weight: 403.40 g/mol
CAT No.: CS-O-39440
Stock: In-stock

Salbutamol Impurity N Acetate Salt

CAS No.: 149222-15-1 (Freebase)
Molecular Formula: C₂₈H₄₄N₂O₇
Molecular Weight: 520.66
CAT No.: CS-O-16529
Stock: In-stock

Ziprasidone open ring impurity

CAS No.: 1159977-64-6
Molecular Formula: C₂₁H₂₃ClN₄O₂S
Molecular Weight: 430.95
CAT No.: CS-O-05612
Stock: In-stock

Miconazole EP impurity G

CAS No.: 909277-72-1
Molecular Formula: C₁₈H₁₅Cl₄N₃O₄
Molecular Weight: 479.14
CAT No.: CS-O-07925
Stock: In-stock

Axitinib Dimer (Asymmetric Impurity)

CAS No.: 1428728-84-0
Molecular Formula: C₄₄H₃₆N₈O₂S₂
Molecular Weight: 772.94
CAT No.: CS-T-93579
Stock: In-stock

Erucic Acid Methyl Ester

CAS No.: 1120-34-9
Molecular Formula: C₂₃H₄₄O₂
Molecular Weight: 352.59
CAT No.: CS-T-92167
Stock: In-stock

Enzalutamide Impurity I

CAS No.: 915087-16-0
Molecular Formula: C₂₁H₁₇F₃N₄O₂S
Molecular Weight: 446.45
CAT No.: CS-O-14638
Stock: In-stock

Salbutamol Impurity O

CAS No.: 2387728-91-6
Molecular Formula: C₁₅H₂₅NO₃
Molecular Weight: 267.36
CAT No.: CS-O-14743
Stock: In-stock

Thioridazine EP Impurity D

CAS No.: 53926-89-9
Molecular Formula: C₂₁H₂₆N₂O₂S₂
Molecular Weight: 402.57
CAT No.: CS-EO-00380
Stock: In-stock

Cyclopentolate impurity A

CAS No.: 25209-52-3
Molecular Formula: C₁₃H₁₆O₃
Molecular Weight: 220.26
CAT No.: CS-K-00224
Stock: In-stock

Lisinopril EP Impurity G

CAS No.: 1356839-89-8
Molecular Formula: C₄₂H₆₀N₆O₉
Molecular Weight: 792.96
CAT No.: CS-O-12025
Stock: In-stock

N-(1-Benzylpiperidin-4-yl)-N-phenylpropanamide Hydrochloride

CAS No.: 5156-58-1
Molecular Formula: C₂₁H₂₇ClN₂O
Molecular Weight: 358.90
CAT No.: CS-CR-00009
Stock: In-stock

Brimonidine Impurity E

CAS No.: 168329-48-4
Molecular Formula: C₉H₈BrN₅
Molecular Weight: 266.10
CAT No.: CS-O-14706
Stock: In-stock

Cetirizine 3-Chloro Impurity

CAS No.: 1232460-29-5
Molecular Formula: C₂₁H₂₇Cl₃N₂O₃
Molecular Weight: --
CAT No.: CS-O-07594
Stock: In-stock

Orphenadrine citrate USP Impurity B

CAS No.: 93940-17-1
Molecular Formula: C₂₀H₂₈ClNO
Molecular Weight: 333.90
CAT No.: CS-EN-00075
Stock: In-stock

Ciprofibrate EP Impurity D

CAS No.: 130232-51-8
Molecular Formula: C₁₄H₁₆Cl₂O₃
Molecular Weight: 303.18g/mol
CAT No.: CS-O-14154
Stock: In-stock

Atovaquone Indene Isomer

CAS No.: --
Molecular Formula: C₂₂H₁₉ClO₃
Molecular Weight: 366.84
CAT No.: CS-O-15476
Stock: In-stock

Deschloroethyl bendamustine

CAS No.: 1219709-86-0
Molecular Formula: C₁₄H₁₈ClN₃O₂
Molecular Weight: 295.76
CAT No.: CS-ZH-14778
Stock: In-stock

N-Nitroso Venlafaxine Impurity H

CAS No.: --
Molecular Formula: C24H32N2O4
Molecular Weight: 412.52
CAT No.: CS-T-94237
Stock: In-stock

Osimertinib Impurity A

CAS No.: 1421373-98-9
Molecular Formula: C₂₇H₃₁N₇O₂
Molecular Weight: 485.58
CAT No.: CS-AV-00079
Stock: In-stock

Silodosin (S-ISOMER)

CAS No.: 2182279-45-2
Molecular Formula: C₂₅H₃₂F₃N₃O₄
Molecular Weight: 495.53
CAT No.: CS-O-14411
Stock: In-stock

Lansoprazole Sulfide Impurity

CAS No.: 103577-40-8
Molecular Formula: C₁₆H₁₄F₃N₃OS
Molecular Weight: 353.36
CAT No.: CS-O-31884
Stock: In-stock


CAS No.: 1255529-23-7
Molecular Formula: C₂₄H₃₀ClN₇O₄S
Molecular Weight: 548.06
CAT No.: CS-P-07796
Stock: In-stock

Ibuprofen impurity N

CAS No.: 3585-52-2
Molecular Formula: C₁₁H₁₄O₂
Molecular Weight: 178.23
CAT No.: CS-P-00419
Stock: In-stock

N-(4-Methoxy-3,5-dimethyl-2-pyridinyl)methyl Omeprazole

CAS No.: 1346599-85-6
Molecular Formula: C₂₆H₃₀N₄O₄S
Molecular Weight: 494.60
CAT No.: CS-T-80106
Stock: In-stock

Levetiracetam USP Related Compound A

CAS No.: 102767-31-7
Molecular Formula: C8H15ClN2O2
Molecular Weight: 206.7
CAT No.: CS-O-11011
Stock: In-stock

Dipyridamole EP Impurity C

CAS No.: 54093-92-4
Molecular Formula: C20H30ClN7O2
Molecular Weight: 435.95
CAT No.: CS-O-31099
Stock: In-stock

Trazodone Isobutyl Ether Analog

CAS No.: 2470436-00-9
Molecular Formula: C₁₇H₂₇ClN₂O
Molecular Weight: 310.86
CAT No.: CS-O-43348
Stock: In-stock

Anastrozole USP related Impurity e

CAS No.: 1338800-81-9
Molecular Formula: C₁₇H₂₁N₃O₄
Molecular Weight: 331.37
CAT No.: CS-EO-01054
Stock: In-stock

N-desmethyl Vancomycin

CAS No.: --
Molecular Formula: C₆₅H₇₃Cl₂N₉O₂₄
Molecular Weight: 1435.23
CAT No.: CS-T-62694
Stock: In-stock

Valsartan formyl impurity

CAS No.: 1418314-03-0
Molecular Formula: C20H21N5O3
Molecular Weight: 379.41
CAT No.: CS-O-34048
Stock: In-stock

Lifitegrast Impurity G

CAS No.: 2295862-29-0
Molecular Formula: C30H26Cl2N2O7S
Molecular Weight: 629.51
CAT No.: CS-O-40740
Stock: In-stock


CAS No.: 479035-75-1
Molecular Formula: C₃₂H₃₉NO₄
Molecular Weight: 501.66
CAT No.: CS-T-54703
Stock: In-stock

Gabapentin acid Impurity

CAS No.: 1281568-83-9
Molecular Formula: C13H23NO3
Molecular Weight: 241.33
CAT No.: CS-O-32644
Stock: In-stock

Fluconazole EP Impurity F

CAS No.: 118689-07-9
Molecular Formula: C11H11F2N3O2
Molecular Weight: 255.2
CAT No.: CS-T-52891
Stock: In-stock

Ondansetron Impurity D

CAS No.: 99614-64-9
Molecular Formula: C₁₄H₁₃NO
Molecular Weight: 211.26
CAT No.: CS-O-31137
Stock: In-stock


CAS No.: 1094598-75-0
Molecular Formula: C₂₂H₃₀N₆O₅S
Molecular Weight: 490.58
CAT No.: CS-O-01446
Stock: In-stock

Neratinib Impurity 5

CAS No.: --
Molecular Formula: C₂₆H₂₀ClN₅O₅
Molecular Weight: 517.92
CAT No.: CS-P-01849
Stock: In-stock

Metformin EP Impurity A

CAS No.: 461-58-5
Molecular Formula: C₂H₄N₄
Molecular Weight: 84.08
CAT No.: CS-O-01162
Stock: In-stock

Mycophenolic Acid Lactone (EP Impurity H)

CAS No.: 79081-87-1
Molecular Formula: C₁₇H₂₀O₆
Molecular Weight: 320.34
CAT No.: CS-T-83349
Stock: In-stock

Esomeprazole EP Impurity B

CAS No.: 119141-89-8
Molecular Formula: C₁₇H₁₉N₃O₃S
Molecular Weight: 345.42
CAT No.: CS-T-38031
Stock: In-stock

Bupivacaine EP Impurity D

CAS No.: 1037184-07-8
Molecular Formula: C₁₄H₁₉Cl₂NO
Molecular Weight: 288.21
CAT No.: CS-T-17524
Stock: In-stock

Selexipag Impurity A

CAS No.: 475086-75-0
Molecular Formula: C₂₃H₂₇N₃O
Molecular Weight: 361.48
CAT No.: CS-AQ-00229
Stock: In-stock

Empagliflozin Acetyl impurity

CAS No.: 1079083-63-8
Molecular Formula: C₂₇H₂₉ClO₁₀
Molecular Weight: 548.97
CAT No.: CS-EO-00244
Stock: In-stock

Quetiapine Sulfone

CAS No.: 329216-65-1
Molecular Formula: C₂₁H₂₅N₃O₄S
Molecular Weight: 415.51
CAT No.: CS-O-10375
Stock: In-stock

Amoxicillin EP Impurity D Sodium Salt [Mixture of Isomers]

CAS No.: 68728-47-2
Molecular Formula: C₁₆H₂₀N₃O₆NaS
Molecular Weight: 405.40
CAT No.: CS-O-07190
Stock: In-stock

N-Nitroso Mefloquine

CAS No.: --
Molecular Formula: C₁₇H₁₅F₆N₃O₂
Molecular Weight: 407.31
CAT No.: CS-O-38639
Stock: In-stock

Empagliflozin Methoxy impurity

CAS No.: 872980-38-6
Molecular Formula: C28H31ClO10
Molecular Weight: 563
CAT No.: CS-EO-00245
Stock: In-stock

Betamethasone 17 -Propionate

CAS No.: 5534-13-4
Molecular Formula: C₂₅H₃₃FO₆
Molecular Weight: 448.52
CAT No.: CS-O-30546
Stock: In-stock

Granisetron USP Related Compound B

CAS No.: 107007-95-4
Molecular Formula: C₁₇H₂₂N₄O
Molecular Weight: 298.38
CAT No.: CS-K-00068
Stock: In-stock

Montelukast EP Impurity B

CAS No.: 918972-54-0
Molecular Formula: C₃₅H₃₄ClNO₂S
Molecular Weight: 568.17
CAT No.: CS-O-10009
Stock: In-stock


CAS No.: 525-61-1
Molecular Formula: C₁₅H₂₁N₃O
Molecular Weight: 259.39
CAT No.: CS-T-41354
Stock: In-stock

Ezetimibe Benzyl Diol Impurity

CAS No.: 1374250-06-2
Molecular Formula: C31H31F2NO3
Molecular Weight: 503.58
CAT No.: CS-O-33210
Stock: In-stock

Rosuvastatin Dihydrobenzoquinazoline (6S)-Isomer

CAS No.: 854898-53-6
Molecular Formula: C₂₂H₂₈FN₃O₆S
Molecular Weight: 481.5
CAT No.: CS-O-38626
Stock: In-stock


CAS No.: 73785-40-7
Molecular Formula: C₁₀H₁₅N₇OS
Molecular Weight: 281.34
CAT No.: CS-ED-01970
Stock: In-stock

Furosemide EP impurity D

CAS No.: 5046-19-5
Molecular Formula: C₁₇H₁₇N₃O₆S
Molecular Weight: 391.40
CAT No.: CS-O-07845
Stock: In-stock

Calcium pidolate

CAS No.: 31377-05-6
Molecular Formula: C₁₀H₁₂CaN₂O₆
Molecular Weight: 296.29
CAT No.: CS-O-01048
Stock: In-stock

Docetaxel Impurity B

CAS No.: 167074-97-7
Molecular Formula: C₄₃H₅₁NO₁₄
Molecular Weight: 805.86
CAT No.: CS-O-31070
Stock: In-stock

Mono-sulfoxide-Sugammadex Epimer II

CAS No.: 2412953-12-7
Molecular Formula: C₇₂H₁₁₂O₄₉S₈
Molecular Weight: 2018.15
CAT No.: CS-O-32913
Stock: In-stock

Pyropheophorbide A Methyl Ester

CAS No.: 6453-67-4
Molecular Formula: C₃₄H₃₆N₄O₃
Molecular Weight: 548.67
CAT No.: CS-T-85494
Stock: In-stock

Abemaciclib Impurity 2

CAS No.: 1231930-37-2
Molecular Formula: C₁₇H₂₄BFN₂O₂
Molecular Weight: 318.19
CAT No.: CS-O-32767
Stock: In-stock

N-Nitroso Dabigatran Etexilate

CAS No.: 2892260-29-4
Molecular Formula: C₃₄H₄₀N₈O₆
Molecular Weight: 656.53
CAT No.: CS-O-38916
Stock: In-stock

Bortezomib Impurity G

CAS No.: 289472-81-7
Molecular Formula: C₁₉H₂₄N₄O₃
Molecular Weight: t 356.42
CAT No.: CS-T-27112
Stock: In-stock

Clobazam impurity C

CAS No.: 22316-16-1
Molecular Formula: C₁₇H₁₅ClN₂O₂
Molecular Weight: 314.77
CAT No.: CS-T-33521
Stock: In-stock

Sitagliptin EP Impurity E

CAS No.: 936630-57-8
Molecular Formula: C₁₀H₁₀F₃NO₂
Molecular Weight: 233.19
CAT No.: CS-O-08191
Stock: In-stock

Moxifloxacin  EP Impurity A

CAS No.: 151213-15-9
Molecular Formula: C20H21F2N3O3
Molecular Weight: 389.4
CAT No.: CS-T-18380
Stock: In-stock


CAS No.: 104206-82-8
Molecular Formula: C₁₄H₁₃NO₇S
Molecular Weight: 339.32
CAT No.: CS-T-31886
Stock: In-stock

Tri Acetyl Azacitidine

CAS No.: 10302-78-0
Molecular Formula: C₁₄H₁₈N₄O₈
Molecular Weight: 370.31
CAT No.: CS-EO-00143
Stock: In-stock

Cetirizine EP Impurity E

CAS No.: 682323-77-9
Molecular Formula: C23H29ClN2O4
Molecular Weight: 432.94
CAT No.: CS-CB-00053
Stock: In-stock


CAS No.: --
Molecular Formula: C21H23FN4O5
Molecular Weight: 430.43
CAT No.: CS-O-38749
Stock: In-stock

Trimetazidine Impurity A

CAS No.: 52146-35-7
Molecular Formula: C₁₄H₂₂N₂O₃
Molecular Weight: 266.34
CAT No.: CS-M-21703
Stock: In-stock

Doxylamine 4-Pyridinyl Isomer

CAS No.: 873407-01-3
Molecular Formula: C₁₇H₂₂N₂O
Molecular Weight: 270.37
CAT No.: CS-T-21379
Stock: In-stock

Des-Proline dimer - I

CAS No.: --
Molecular Formula: C₃₇H₅₃N₅O₈
Molecular Weight: 695.85 mol/g
CAT No.: CS-P-08294
Stock: In-stock

Levofloxacin Related Compound F

CAS No.: 117620-85-6
Molecular Formula: C₁₈H₂₁N₃O₄
Molecular Weight: 343.38
CAT No.: CS-O-31097
Stock: In-stock

Omeprazole EP Impurity F

CAS No.: 125656-82-8
Molecular Formula: C₁₆H₁₃N₃O₂S
Molecular Weight: 311.36
CAT No.: CS-EO-00001
Stock: In-stock

Naltrexone 3-Methyl Ether

CAS No.: 16617-07-5
Molecular Formula: C₂₁H₂₅NO₄
Molecular Weight: 355.43
CAT No.: CS-T-93357
Stock: In-stock