Nitrosamines -API'S Related Products 
Venkatasai is a leading innovator in the field of pharmaceutical reference standards, offering high-quality Reference Standards of Abacavir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamines (N-NO products). Our Abacavir impurity reference standards play a vital role in pharmaceutical research, supporting product development, ANDA and DMF filings, quality control (QC), method validation, and stability studies. They are also instrumental in identifying unknown impurities and evaluating genotoxic potential. All Abacavir-related products are thoroughly characterized and supplied with comprehensive Certificates of Analysis (COA) and analytical data that comply with regulatory standards. EP/USP traceable standards can also be provided upon request. Furthermore, all supplied products undergo periodic re-testing to ensure continued quality and reliability.
Abemaciclib Nitroso Metabolites M2
CAT No: VS-N091240
CAS No: NA
Mol.F.: C25H27F2N9O
Mol.Wt.: 507.5
Status: In Stock
Acalabrutinib Nitroso Impurity 1
CAT No: VS-N091155
CAS No: NA
Mol.F.: C22H20N8O2
Mol.Wt.: 428.5
Status: In Stock
Aceclofenac Nitroso Impurity 1
CAT No: VS-N091162
CAS No: NA
Mol.F.: C16H12Cl2N2O5
Mol.Wt.: 383.2
Status: In Stock
Alogliptin Benzoate Dimer Nitroso Impurity
CAT No: VS-N091210
CAS No: NA
Mol.F.: C31H29N9O5
Mol.Wt.: 607.6
Status: In Stock
Bilastine Nitroso Impurity 2
CAT No: VS-N091208
CAS No: NA
Mol.F.: C16H22N4O2
Mol.Wt.: 302.4
Status: In Stock
Bilastine Nitrosoamine Impurity 1
CAT No: VS-N091007
CAS No: N/A
Mol.F.: C12H14N4O
Mol.Wt.: 230.27
Status: In Stock
Brexpiprazole Nitroso Impurity 2
CAT No: VS-N091207
CAS No: NA
Mol.F.: C17H22N4O3
Mol.Wt.: 330.4
Status: In Stock
Buspirone Nitroso Impurity 1
CAT No: VS-N091006
CAS No: 872826-80-7
Mol.F.: C8H11N5O
Mol.Wt.: 193.2
Status: In Stock
Carvedilol Nitroso Impurity 2
CAT No: VS-N091114
CAS No: N/A
Mol.F.: C24H25N3O5
Mol.Wt.: 435.5
Status: In Stock
Clonixin Nitroso Impurity 1
CAT No: VS-N091271
CAS No: NA
Mol.F.: C13H11N3O3
Mol.Wt.: 257.2
Status: Custom Synthesis
Clopidogrel Nitroso Impurity
CAT No: VS-N091243
CAS No: 2460755-43-3
Mol.F.: C7H8N2OS
Mol.Wt.: 168.2
Status: In Stock
Crizotinib Nitroso Impurity
CAT No: VS-N091179
CAS No: NA
Mol.F.: C21H21Cl2FN6O2
Mol.Wt.: 479.3
Status: In Stock
Dabigatran Amide Nitroso Impurity
CAT No: VS-N091021
CAS No: N/A
Mol.F.: C34H39N7O7
Mol.Wt.: 657.73
Status: In Stock
Dabigatran Nitrosamine Impurity
CAT No: VS-N091020
CAS No: N/A
Mol.F.: C18H21N5O4
Mol.Wt.: 371.39
Status: In Stock
DABIGATRAN NITROSO IMPURITY 18
CAT No: VS-N091013
CAS No: N/A
Mol.F.: C18H19N5O6
Mol.Wt.: 401.4
Status: In Stock
Dabigatran Nitroso Impurity 3
CAT No: VS-N091015
CAS No: N/A
Mol.F.: C10H13N3O3
Mol.Wt.: 223.2
Status: In Stock
Dabigatran Nitroso Impurity 7
CAT No: VS-N091014
CAS No: N/A
Mol.F.: C27H25N7O4
Mol.Wt.: 511.5
Status: In Stock
Diclofenac Desacetate Nitroso Impurity
CAT No: VS-N091245
CAS No: NA
Mol.F.: C12H8Cl2N2O
Mol.Wt.: 267.1
Status: In Stock
Dinitroso Ethambutol
CAT No: VS-N091031
CAS No: 52322-22-2
Mol.F.: C10H22N4O4
Mol.Wt.: 262.3
Status: In Stock
Duloxetine Nitroso Impurity 2
CAT No: VS-N091022
CAS No: 2680527-91-5
Mol.F.: C18H18N2O2S
Mol.Wt.: 326.4
Status: In Stock
Elagolix Ethyl Ester Nitroso Impurity
CAT No: VS-N091026
CAS No: N/A
Mol.F.: C34H33F5N4O6
Mol.Wt.: 688.7
Status: In Stock
Elagolix Nitroso Impurity
CAT No: VS-N091027
CAS No: N/A
Mol.F.: C32H29F5N4O6
Mol.Wt.: 660.6
Status: In Stock
Elagolix N-Nitroso S-Isomer
CAT No: VS-N091249
CAS No: NA
Mol.F.: C32H29F5N4O6
Mol.Wt.: 660.6
Status: In Stock
Esmolol Acid Nitroso Impurity
CAT No: VS-N091224
CAS No: NA
Mol.F.: C15H22N2O5
Mol.Wt.: 310.4
Status: In Stock
Esmolol Isopropyl Amine Nitroso Impurity
CAT No: VS-N091225
CAS No: NA
Mol.F.: C18H29N3O4
Mol.Wt.: 351.4
Status: In Stock
Esmolol Nitroso Impurity 1
CAT No: VS-N091230
CAS No: NA
Mol.F.: C31H45N3O8
Mol.Wt.: 587.7
Status: In Stock
Etomidate intermediate Nitroso impurity
CAT No: VS-N091024
CAS No: 2765007-50-7
Mol.F.: C12H16N2O3
Mol.Wt.: 236.27
Status: In Stock
Finerenone Nitroso Impurity
CAT No: VS-N091033
CAS No: N/A
Mol.F.: C21H21N5O4
Mol.Wt.: 407.4
Status: In Stock
Flecainide Nitroso Impurity
CAT No: VS-N091160
CAS No: 2901109-58-6
Mol.F.: C17H19F6N3O4
Mol.Wt.: 443.35
Status: In Stock
Fluoxetine Nitroso EP Impurity A
CAT No: VS-N091288
CAS No: 2659259-65-9
Mol.F.: C10H14N2O2
Mol.Wt.: 194.2
Status: Custom Synthesis
Fluoxetine Nitroso EP Impurity B
CAT No: VS-N091289
CAS No: 259547-00-7
Mol.F.: C10H14N2O
Mol.Wt.: 178.2
Status: Custom Synthesis
Formoterol intermediate nitroso impurity
CAT No: VS-N091101
CAS No: N/A
Mol.F.: C17H20N2O2
Mol.Wt.: 284.36
Status: In Stock
Hydralazine Nitroso Impurity
CAT No: VS-N091133
CAS No: N/A
Mol.F.: C8H7N5O
Mol.Wt.: 189.18
Status: In Stock
Ketoconazole Nitroso EP Impurity D
CAT No: VS-N091241
CAS No: NA
Mol.F.: C24H25Cl2N5O4
Mol.Wt.: 518.4
Status: In Stock
Lapatinib Nitroso Impurity 1
CAT No: VS-N091038
CAS No: N/A
Mol.F.: C29H25ClFN5O5S
Mol.Wt.: 610.1
Status: In Stock
Lenalidomide Nitroso Impurity
CAT No: VS-N091042
CAS No: N/A
Mol.F.: C13H11N3O4
Mol.Wt.: 273.2
Status: In Stock
Mononitroso Rilpivirine - I
CAT No: VS-N091075
CAS No: NA
Mol.F.: C22H17N7O
Mol.Wt.: 395.4
Status: In Stock
Mononitroso Rilpivirine - II
CAT No: VS-N091076
CAS No: NA
Mol.F.: C22H17N7O
Mol.Wt.: 395.4
Status: In Stock
Mono-Nitroso-Clonidine
CAT No: VS-N091009
CAS No: 148950-49-6
Mol.F.: C9H8Cl2N4O
Mol.Wt.: 259.1
Status: In Stock
N -Nitroso valsartan Impurity 1
CAT No: VS-N091094
CAS No: 2254485-68-0
Mol.F.: C19H20N6O3
Mol.Wt.: 380.4
Status: In Stock
N,C-Didesmethyl Doxylamine N-Nitroso
CAT No: VS-N091142
CAS No: NA
Mol.F.: C15H17N3O2
Mol.Wt.: 271.32
Status: In Stock
N-Desmethyl N-Nitroso Clindamycin Phosphate
CAT No: VS-N091291
CAS No: NA
Mol.F.: C17H31ClN3O9PS
Mol.Wt.: 519.9
Status: Custom Synthesis
N-Desmethyl N-Nitroso Relugolix impurity
CAT No: VS-N091286
CAS No: NA
Mol.F.: C28H24F2N8O6S
Mol.Wt.: 638.6
Status: Custom Synthesis
N-Desmethyl N-Nitroso Tapentadol
CAT No: VS-N091275
CAS No: NA
Mol.F.: C13H20N2O2
Mol.Wt.: 236.3
Status: Custom Synthesis
N-Desmethyl-N-Nitroso-Tetracycline
CAT No: VS-N091264
CAS No: NA
Mol.F.: C21H21N3O9
Mol.Wt.: 459.4
Status: In Stock
N-Dinitroso Almotriptan
CAT No: VS-N091278
CAS No: NA
Mol.F.: C16H21N5O4S
Mol.Wt.: 379.4
Status: Custom Synthesis
Nicardipine Nitroso Impurity
CAT No: VS-N091056
CAS No: NA
Mol.F.: C26H28N4O7
Mol.Wt.: 508.5
Status: In Stock
Nifedipine Nitroso Impurity
CAT No: VS-N091055
CAS No: NA
Mol.F.: C17H17N3O7
Mol.Wt.: 375.3
Status: In Stock
Nintedanib Nitroso Impurity 2
CAT No: VS-N091159
CAS No: 2490403-92-2
Mol.F.: C13H17N5O4
Mol.Wt.: 307.31
Status: In Stock
Nitroso Phthaloyl Amlodipine
CAT No: VS-N091001
CAS No: N/A
Mol.F.: C28H26ClN3O8
Mol.Wt.: 568
Status: In Stock
N-methyl-N-(2,3,4,5,6-pentahydroxyhexyl)nitrous amide
CAT No: VS-N091156
CAS No: 62137-31-9
Mol.F.: C7H16N2O6
Mol.Wt.: 224.21
Status: In Stock
N-Nitoso Alimemazine EP Impurity B
CAT No: VS-N091280
CAS No: NA
Mol.F.: C17H19N3OS
Mol.Wt.: 313.4
Status: Custom Synthesis
N-Nitoso Alimemazine EP Impurity C
CAT No: VS-N091281
CAS No: NA
Mol.F.: C12H8N2OS
Mol.Wt.: 228.27
Status: Custom Synthesis
N-Nitoso Des-Ethyl Procainamide
CAT No: VS-N091254
CAS No: NA
Mol.F.: C11H16N4O 2
Mol.Wt.: 236.28
Status: In Stock
N-Nitoso Des-Ethyl Procainamide 1
CAT No: VS-N091253
CAS No: NA
Mol.F.: C11H14N4O 4
Mol.Wt.: 266.26
Status: In Stock
N-Nitroso (±)-Epinephrine
CAT No: VS-N091182
CAS No: NA
Mol.F.: C9H12N2O4
Mol.Wt.: 212.2
Status: In Stock
N-Nitroso (S) Tamsulosin
CAT No: VS-N091171
CAS No: NA
Mol.F.: C20H27N3O6S
Mol.Wt.: 437.51
Status: In Stock
N-Nitroso 4-Chlorophenothiazine
CAT No: VS-N091266
CAS No: NA
Mol.F.: C12H7ClN2OS
Mol.Wt.: 262.7
Status: In Stock
N-Nitroso Amiodarone EP Impurity B
CAT No: VS-N091147
CAS No: 678982-38-2
Mol.F.: C23H24I2N2O4
Mol.Wt.: 646.3
Status: In Stock
N-Nitroso Amoxicillin EP Impurity C
CAT No: VS-N091287
CAS No: NA
Mol.F.: C16H18N4O6S
Mol.Wt.: 394.4
Status: Custom Synthesis
N-Nitroso Ampicillin EP Impurity C
CAT No: VS-N091298
CAS No: NA
Mol.F.: C16H18N4O5S
Mol.Wt.: 378.4
Status: Custom Synthesis
N-Nitroso Atenolol EP Impurity G
CAT No: VS-N091226
CAS No: NA
Mol.F.: C14H20N2O5
Mol.Wt.: 296.3
Status: In Stock
N-Nitroso Atenolol-d5
CAT No: VS-N091002
CAS No: N/A
Mol.F.: C14H16D5N3O4
Mol.Wt.: 300.37
Status: In Stock
N-Nitroso Atropine EP Impurity B
CAT No: VS-N091152
CAS No: 55855-45-3
Mol.F.: C16H20N2O4
Mol.Wt.: 304.3
Status: In Stock
N-Nitroso Azithromycin EP Impurity I
CAT No: VS-N091238
CAS No: NA
Mol.F.: C37H69N3O13
Mol.Wt.: 764.0
Status: In Stock
N-Nitroso Betahistine EP Impurity C
CAT No: VS-N091211
CAS No: NA
Mol.F.: C14H16N4O
Mol.Wt.: 256.3
Status: In Stock
N-Nitroso Bumetanide
CAT No: VS-N091109
CAS No: 2490432-02-3
Mol.F.: C17H19N3O6S
Mol.Wt.: 393.4
Status: In Stock
N-Nitroso Bupropion
CAT No: VS-N091005
CAS No: 2763780-10-3
Mol.F.: C13H17ClN2O2
Mol.Wt.: 268.7
Status: In Stock
N-Nitroso Carbidopa
CAT No: VS-N091274
CAS No: NA
Mol.F.: C10H13N3O5
Mol.Wt.: 255.2
Status: Custom Synthesis
N-Nitroso Cariprazine
CAT No: VS-N091237
CAS No: NA
Mol.F.: C21H31Cl2N5O2
Mol.Wt.: 456.4
Status: In Stock
N-Nitroso Carvedilol
CAT No: VS-N091113
CAS No: 2248746-67-8
Mol.F.: C24H25N3O5
Mol.Wt.: 435.5
Status: In Stock
N-Nitroso Cinnarizine EP Impurity A
CAT No: VS-N091239
CAS No: 1698-25-5
Mol.F.: C17H19N3O
Mol.Wt.: 281.4
Status: In Stock
N-Nitroso Ciprofloxacin
CAT No: VS-N091010
CAS No: 864443-44-7
Mol.F.: C17H17FN4O4
Mol.Wt.: 360.3
Status: In Stock
N-Nitroso Ciprofloxacin EP Impurity F
CAT No: VS-N091150
CAS No: NA
Mol.F.: C17H18N4O5
Mol.Wt.: 358.13
Status: In Stock
N-Nitroso Clopidogrel EP Impurity F
CAT No: VS-N091149
CAS No: NA
Mol.F.: C15H15ClN2O3S
Mol.Wt.: 338.8
Status: In Stock
N-Nitroso Clozapine
CAT No: VS-N091124
CAS No: 156632-03-0
Mol.F.: C18H18ClN5O
Mol.Wt.: 355.8
Status: In Stock
N-Nitroso Cyclobenzaprine USP Related Compound B
CAT No: VS-N091134
CAS No: N/A
Mol.F.: C19H18N2O
Mol.Wt.: 290.37
Status: Custom Synthesis
N-Nitroso Cyclophosphamide
CAT No: VS-N091151
CAS No: NA
Mol.F.: C7H14Cl2N3O3P
Mol.Wt.: 290.08
Status: In Stock
N-Nitroso Cyproheptadine
CAT No: VS-N091219
CAS No: NA
Mol.F.: C20H18N2O
Mol.Wt.: 302.38
Status: In Stock
N-Nitroso Dabigatran Etexilate
CAT No: VS-N091012
CAS No: 2892260-29-4
Mol.F.: C34H40N8O6
Mol.Wt.: 656.7
Status: In Stock
N-Nitroso Decyl aminoquat
CAT No: VS-N091017
CAS No: N/A
Mol.F.: C19H42N3O
Mol.Wt.: 328.6
Status: In Stock
N-Nitroso Des-ethyl Clomiphene
CAT No: VS-N091212
CAS No: NA
Mol.F.: C24H23ClN2O2
Mol.Wt.: 406.9
Status: In Stock
N-Nitroso Desipramine
CAT No: VS-N091188
CAS No: 57164-17-7
Mol.F.: C18H21N3O
Mol.Wt.: 295.4
Status: In Stock
N-Nitroso Desmethyl Azelastine
CAT No: VS-N091146
CAS No: NA
Mol.F.: C21H21ClN4O2
Mol.Wt.: 396.9
Status: In Stock
N-Nitroso Desmethyl Brompheniramine
CAT No: VS-N091202
CAS No: NA
Mol.F.: C15H16BrN3O
Mol.Wt.: 334.2
Status: In Stock
N-Nitroso Desmethyl Carbinoxamine
CAT No: VS-N091189
CAS No: NA
Mol.F.: C15H16ClN3O2
Mol.Wt.: 305.8
Status: In Stock
N-Nitroso Desmethyl Cis-Doxepin
CAT No: VS-N091190
CAS No: NA
Mol.F.: C18H18N2O2
Mol.Wt.: 294.4
Status: In Stock
N-Nitroso Desmethyl Edoxaban
CAT No: VS-N091131
CAS No: N/A
Mol.F.: C23H27ClN8O5S
Mol.Wt.: 563.03
Status: In Stock
N-nitroso desmethyl levomepromazine
CAT No: VS-N091223
CAS No: NA
Mol.F.: C17H19N3O2S
Mol.Wt.: 329.42
Status: In Stock
N-Nitroso Desmethyl Orphenadrine
CAT No: VS-N091181
CAS No: NA
Mol.F.: C17H20N2O2
Mol.Wt.: 284.4
Status: In Stock
N-Nitroso Desmethyl Pimavanserin
CAT No: VS-N091293
CAS No: NA
Mol.F.: C24H31FN4O3
Mol.Wt.: 442.5
Status: Custom Synthesis
N-Nitroso Desmethyl Prochlorperazine
CAT No: VS-N091154
CAS No: 109095-35-4
Mol.F.: C19H21ClN4OS
Mol.Wt.: 388.91
Status: In Stock
N-Nitroso Desmethyl S-Chlorpheniramine
CAT No: VS-N091192
CAS No: NA
Mol.F.: C15H16ClN3O
Mol.Wt.: 289.8
Status: In Stock
N-Nitroso desmethyl Zopiclone
CAT No: VS-N091153
CAS No: NA
Mol.F.: C₁₆H₁₄ClN₇O₄
Mol.Wt.: 403.78
Status: In Stock
