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API Labeled Standards
Venkatasai is a leading provider of pharmaceutical reference standards, specializing in the supply of high-purity API Labeled Standards reference materials. Our portfolio includes both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamine derivatives (N-NO products). These reference standards play a crucial role in pharmaceutical R&D, aiding in formulation development, ANDA/DMF submissions, quality control, method validation, stability studies, and impurity profiling—including the identification and assessment of potentially genotoxic impurities.
Each API Labeled Standards-related product is rigorously characterized and delivered with a detailed Certificate of Analysis (COA) and comprehensive analytical data to ensure regulatory compliance. Upon request, we also offer EP/USP traceable standards. To maintain the highest quality standards, all materials are subject to periodic re-testing and continuous quality monitoring.
Abiraterone acetate-D3
CAT No: VS-A186000
CAS No: 2122245-10-5
Mol.F.: C26H30D3NO2
Mol.Wt.: 394.57
Status: In Stock
Acenocoumarol-D5
CAT No: VS-A186001
CAS No: 1185071-64-0
Mol.F.: C19H10D5NO6
Mol.Wt.: 358.36
Status: In Stock
Afatinib D6
CAT No: VS-A186003
CAS No: 1313874-96-2
Mol.F.: C24H19D6ClFN5O3
Mol.Wt.: 492.0
Status: In Stock
Agomelatine-d3
CAT No: VS-A186004
CAS No: 1079389-38-0
Mol.F.: C15H14D3NO2
Mol.Wt.: 246.3
Status: In Stock
Agomelatine D6
CAT No: VS-A186005
CAS No: 1079389-42-6
Mol.F.: C15H11D6NO2
Mol.Wt.: 249.3
Status: In Stock
Albendazole D3
CAT No: VS-A186006
CAS No: 1353867-92-1
Mol.F.: C12H12D3N3O2S
Mol.Wt.: 268.4
Status: In Stock
Alcaftadine-d3
CAT No: VS-A186007
CAS No: 1794775-80-6
Mol.F.: C19H18D3N3O
Mol.Wt.: 310.41
Status: In Stock
Alfuzosin D6
CAT No: VS-A186008
CAS No: 1006717-31-2
Mol.F.: C19H21D6N5O4
Mol.Wt.: 395.49
Status: In Stock
Alvimopan-d5
CAT No: VS-A186009
CAS No: 1217616-62-0
Mol.F.: C25H27D5N2O4
Mol.Wt.: 429.56
Status: In Stock
Ambrisentan D3
CAT No: VS-A186010
CAS No: 1046116-26-0
Mol.F.: C22H19D3N2O4
Mol.Wt.: 381.5
Status: In Stock
Atazanavir-D6
CAT No: VS-A186012
CAS No: 1092540-50-5
Mol.F.: C38H46D6N6O7
Mol.Wt.: 710.89
Status: In Stock
Avobenzone D3
CAT No: VS-A186013
CAS No: 2518100-58-6
Mol.F.: C20H19D3O3
Mol.Wt.: 313.41
Status: In Stock
Axitinib-d3
CAT No: VS-A186014
CAS No: 1126623-89-9
Mol.F.: C22H15D3N4OS
Mol.Wt.: 389.49
Status: In Stock
Baclofen-d4
CAT No: VS-A186015
CAS No: 1189938-30-4
Mol.F.: C10H8D4ClNO2
Mol.Wt.: 217.69
Status: In Stock
Binimetinib-D3
CAT No: VS-A186016
CAS No: NA
Mol.F.: C17H12D3BrF2N4O3
Mol.Wt.: 444.25
Status: In Stock
Biopterin-d3
CAT No: VS-A186017
CAS No: 1217838-71-5
Mol.F.: C9H8D3N5O3
Mol.Wt.: 240.23
Status: In Stock
Bosentan-D4
CAT No: VS-A186018
CAS No: 1065472-77-6
Mol.F.: C27H25D4N5O6S
Mol.Wt.: 555.64
Status: In Stock
Brexpiprazole-d8
CAT No: VS-A186019
CAS No: 1427049-19-1
Mol.F.: C25H19D8N3O2S
Mol.Wt.: 441.62
Status: In Stock
Bupropion-d9
CAT No: VS-A186022
CAS No: 150988-80-0
Mol.F.: C13H9D9ClNO
Mol.Wt.: 248.8
Status: In Stock
Buspirone-D8
CAT No: VS-A186023
CAS No: 204395-49-3
Mol.F.: C21H23D8N5O2
Mol.Wt.: 393.56
Status: In Stock
Candesartan-d5
CAT No: VS-A186024
CAS No: 1189650-58-5
Mol.F.: C24H15D5N6O3
Mol.Wt.: 445.48
Status: In Stock
7-Amino Clonazepam D4
CAT No: VS-A186159
CAS No: 1215070-96-4
Mol.F.: C15H8D4ClN3O
Mol.Wt.: 289.8
Status: In Stock
Cabotegravir D3
CAT No: VS-A186164
CAS No: NA
Mol.F.: C19H14D3F2N3O5
Mol.Wt.: 408.4
Status: In Stock
Atorvastatin-d5
CAT No: VS-A186175
CAS No: 749193-45-1
Mol.F.: C33H30D5FN2O5
Mol.Wt.: 563.7
Status: In Stock
Acetylsalicylic Acid-D4
CAT No: VS-A186178
CAS No: 97781-16-3
Mol.F.: C9H4O4D4
Mol.Wt.: 184.2
Status: In Stock
Beta-Methylcholine Chloride D3
CAT No: VS-A186188
CAS No: NA
Mol.F.: C6H13D3ClNO
Mol.Wt.: 156.67
Status: Custom Synthesis
Bisoprolol D5
CAT No: VS-A186189
CAS No: 1189881-87-5
Mol.F.: C18H26D5NO4
Mol.Wt.: 330.5
Status: Custom Synthesis
Azithromycin-d3
CAT No: VS-A186197
CAS No: 163921-65-1
Mol.F.: C38H69D3N2O12
Mol.Wt.: 752
Status: Custom Synthesis
Bilastine D6
CAT No: VS-A186200
CAS No: 1215358-58-9
Mol.F.: C28H31D6N3O3
Mol.Wt.: 469.65
Status: Custom Synthesis
Bromhexine D3 Hydrochloride
CAT No: VS-A186202
CAS No: NA
Mol.F.: C14H17D3Br2N2 : HCl
Mol.Wt.: 379.15 : 36.5
Status: Custom Synthesis
Bictegravir-D4
CAT No: VS-A186217
CAS No: 2714436-47-0
Mol.F.: C21H14D4F3N3O5
Mol.Wt.: 453.41
Status: Custom Synthesis
Bictegravir-D4 Sodium
CAT No: VS-A186218
CAS No: NA
Mol.F.: C21H13D4F3N3NaO5
Mol.Wt.: 475.39
Status: Custom Synthesis
6-Hydroxy Benzbromarone-D5 (major)
CAT No: VS-A186221
CAS No: NA
Mol.F.: C17H7D5Br2O4
Mol.Wt.: 445.11
Status: Custom Synthesis
Cabotegravir-D3 Sodium
CAT No: VS-A186229
CAS No: NA
Mol.F.: C19H13D3F2N3NaO5
Mol.Wt.: 430.35
Status: Custom Synthesis
Amoxicillin-D4
CAT No: VS-A186274
CAS No: 2673270-36-3
Mol.F.: C16H15N3O5SD4
Mol.Wt.: 369.4
Status: Custom Synthesis
Atovaquone-d4
CAT No: VS-A186275
CAS No: 2070015-14-2
Mol.F.: C22H15ClO3D4
Mol.Wt.: 370.9
Status: Custom Synthesis
7α-Methylthio Spironolactone-D3
CAT No: VS-A186280
CAS No: NA
Mol.F.: C23H29D3O3S
Mol.Wt.: 391.56
Status: Custom Synthesis
Budesonide D8
CAT No: VS-A186289
CAS No: 1105542-94-6
Mol.F.: C25H26D8O6
Mol.Wt.: 438.6
Status: Custom Synthesis
5α/6α-Hydroxy Lurasidone-D8
CAT No: VS-A186295
CAS No: NA
Mol.F.: C28H28D8N4O3S
Mol.Wt.: 516.73
Status: Custom Synthesis
6α-Methylprednisolone-17-Propionate-D6
CAT No: VS-A186297
CAS No: NA
Mol.F.: C25H28D6O6
Mol.Wt.: 436.58
Status: Custom Synthesis
Betamethasone-17-propionate-D4
CAT No: VS-A186302
CAS No: NA
Mol.F.: C25H29D4FO6
Mol.Wt.: 452.52
Status: Custom Synthesis
Bempedoic Acid-D5
CAT No: VS-A186309
CAS No: 2408131-71-3
Mol.F.: C19H31D5O5
Mol.Wt.: 349.5
Status: Custom Synthesis
Budesonide Impurity 1-d8
CAT No: VS-A186310
CAS No: NA
Mol.F.: C25H24D8O7
Mol.Wt.: 452.57
Status: Custom Synthesis
6α-Methylprednisolone-21-Acetate-D6
CAT No: VS-A186313
CAS No: NA
Mol.F.: C24H26D6O6
Mol.Wt.: 422.55
Status: Custom Synthesis
Canrenone-D7
CAT No: VS-A186314
CAS No: NA
Mol.F.: C22H21D7O3
Mol.Wt.: 347.51
Status: Custom Synthesis
6α-Methylprednisolone-D6
CAT No: VS-A186315
CAS No: NA
Mol.F.: C22H24D6O5
Mol.Wt.: 380.51
Status: Custom Synthesis
Amlodipine-D4
CAT No: VS-A186322
CAS No: 1185246-14-3
Mol.F.: C20H21D4ClN2O5
Mol.Wt.: 412.9
Status: Custom Synthesis
Betamethasone D4
CAT No: VS-A186323
CAS No: NA
Mol.F.: C22H25D4FO5
Mol.Wt.: 396.5
Status: Custom Synthesis
Amlodipine-D4 Maleate
CAT No: VS-A186366
CAS No: 1185246-15-4
Mol.F.: C24H25D4ClN2O9
Mol.Wt.: 528.97
Status: Custom Synthesis
Bupropion D9 Hydrochloride
CAT No: VS-A186379
CAS No: 1189725-26-5
Mol.F.: C13H9D9ClNO : HCl
Mol.Wt.: 248.8 : 36.5
Status: Custom Synthesis
7-Hydroxy Loxapine D8
CAT No: VS-A186390
CAS No: NA
Mol.F.: C18H10D8ClN3O2
Mol.Wt.: 351.86
Status: Custom Synthesis
8-Hydroxy Loxapine D8
CAT No: VS-A186391
CAS No: NA
Mol.F.: C18H10D8ClN3O2
Mol.Wt.: 351.86
Status: Custom Synthesis
Benzene D6
CAT No: VS-A186392
CAS No: 1076-43-3
Mol.F.: C6D6
Mol.Wt.: 84.15
Status: Custom Synthesis
Bromobenzene D5
CAT No: VS-A186393
CAS No: 4165-57-5
Mol.F.: C6D5Br
Mol.Wt.: 162.04
Status: Custom Synthesis
Anthracene-D10
CAT No: VS-A186410
CAS No: 1719-06-8
Mol.F.: C14D10
Mol.Wt.: 188.3
Status: Custom Synthesis
9-Bromoanthracene-d9
CAT No: VS-A186411
CAS No: 183486-02-4
Mol.F.: C14D9Br
Mol.Wt.: 266.18
Status: Custom Synthesis
9-(naphthalen-1-yl-d7)anthracene-1,2,3,4,5,6,7,8,10-d9
CAT No: VS-A186417
CAS No: 2414168-77-5
Mol.F.: C24D16
Mol.Wt.: 320.48
Status: Custom Synthesis
9-Bromo-10-(1-naphthalenyl-2,3,4,5,6,7,8-d7)anthracene-1,2,3,4,5,6,7,8-d8
CAT No: VS-A186418
CAS No: 2330770-73-3
Mol.F.: C24BrD15
Mol.Wt.: 398.37
Status: Custom Synthesis
Carbazole D8
CAT No: VS-A186419
CAS No: 38537-24-5
Mol.F.: C12HD8N
Mol.Wt.: 175.26
Status: Custom Synthesis
8-bromo-1-chlorodibenzo[b,d]furan-2,3,4,6,7,9-d6
![Picture of 8-bromo-1-chlorodibenzo[b,d]furan-2,3,4,6,7,9-d6](https://www.venkatasailifesciences.com/content/images/thumbs/0059456_8-bromo-1-chlorodibenzobdfuran-234679-d6_350.png "Show details for 8-bromo-1-chlorodibenzo[b,d]furan-2,3,4,6,7,9-d6")
CAT No: VS-A186427
CAS No: 2809996-22-1
Mol.F.: C12BrClD6O
Mol.Wt.: 287.57
Status: Custom Synthesis
9-(4-(tert-butyl)pyridin-2-yl)-9H-carbazol-5,6,7,8-d4-2-ol
CAT No: VS-A186437
CAS No: NA
Mol.F.: C21H16D4N2O
Mol.Wt.: 320.43
Status: Custom Synthesis
7-Methoxycoumarin-D3
CAT No: VS-A186452
CAS No: NA
Mol.F.: C12H7D3O5
Mol.Wt.: 237.22
Status: Custom Synthesis
Aripiprazole-D8
CAT No: VS-A186462
CAS No: 1089115-06-9
Mol.F.: C23H19D8Cl2N3O2
Mol.Wt.: 456.43
Status: Custom Synthesis
Carazolol D7
CAT No: VS-A186465
CAS No: 1173021-02-7
Mol.F.: C18H15D7N2O2
Mol.Wt.: 305.42
Status: Custom Synthesis
Atenolol D7
CAT No: VS-A186467
CAS No: 1202864-50-3
Mol.F.: C14H15D7N2O3
Mol.Wt.: 273.4
Status: Custom Synthesis
Caffeine-D9
CAT No: VS-A186471
CAS No: 72238-85-8
Mol.F.: C8HD9N4O2
Mol.Wt.: 203.25
Status: Custom Synthesis
Amisulpride D5
CAT No: VS-A186476
CAS No: 1216626-17-3
Mol.F.: C17H22D5N3O4S
Mol.Wt.: 374.5
Status: Custom Synthesis
Bisphenol A-D4
CAT No: VS-A186487
CAS No: 347841-41-2
Mol.F.: C15H12D4O2
Mol.Wt.: 232.31
Status: Custom Synthesis
Bisphenol-A D16
CAT No: VS-A186488
CAS No: 96210-87-6
Mol.F.: C15D16O2
Mol.Wt.: 244.39
Status: Custom Synthesis
Aniline-D5
CAT No: VS-A186497
CAS No: 4165-61-1
Mol.F.: C6H2D5N
Mol.Wt.: 98.16
Status: Custom Synthesis
Benzaldehyde-D5
CAT No: VS-A186498
CAS No: 14132-51-5
Mol.F.: C7HD5O
Mol.Wt.: 111.15
Status: Custom Synthesis
Bromoethane-D5
CAT No: VS-A186506
CAS No: 3675-63-6
Mol.F.: C2D5Br
Mol.Wt.: 114.0
Status: Custom Synthesis
Benzyl-2,3,4,5,6-d5-amine
CAT No: VS-A186507
CAS No: 1219802-81-9
Mol.F.: C7H9N
Mol.Wt.: 107.16
Status: Custom Synthesis
Benzyl-d5 Chloride
CAT No: VS-A186509
CAS No: 68661-11-0
Mol.F.: C7H2D5Cl
Mol.Wt.: 131.61
Status: Custom Synthesis
Benzyl bromide-d7
CAT No: VS-A186510
CAS No: 35656-93-0
Mol.F.: C7D7Br
Mol.Wt.: 178.08
Status: Custom Synthesis
Benzyl bromide-alpha,alpha-d2
CAT No: VS-A186511
CAS No: 51271-29-5
Mol.F.: C7H5BrD2
Mol.Wt.: 173.05
Status: Custom Synthesis
Anisole D8
CAT No: VS-A186521
CAS No: 54887-54-6
Mol.F.: C7D8O
Mol.Wt.: 116.19
Status: Custom Synthesis
Carbaryl-D3
CAT No: VS-A186523
CAS No: 1433961-56-8
Mol.F.: C12H8D3NO2
Mol.Wt.: 204.24
Status: Custom Synthesis
Benzthiazuron-D3
CAT No: VS-A186542
CAS No: NA
Mol.F.: C9H6D3N3OS
Mol.Wt.: 210.27
Status: Custom Synthesis
Bromuron-D6
CAT No: VS-A186550
CAS No: 2030182-53-5
Mol.F.: C9H5D6BrN2O
Mol.Wt.: 249.14
Status: Custom Synthesis
Bifenox-d3
CAT No: VS-A186558
CAS No: NA
Mol.F.: C14H6D3Cl2NO5
Mol.Wt.: 345.15
Status: Custom Synthesis
Acetamiprid-D3
CAT No: VS-A186560
CAS No: 1353869-35-8
Mol.F.: C10H8D3ClN4
Mol.Wt.: 225.69
Status: Custom Synthesis
Carbendazim D3
CAT No: VS-A186561
CAS No: 1255507-88-0
Mol.F.: C9H6D3N3O2
Mol.Wt.: 194.21
Status: Custom Synthesis
Benomyl-D3
CAT No: VS-A186577
CAS No: NA
Mol.F.: C14H15D3N4O3
Mol.Wt.: 293.34
Status: Custom Synthesis
6-Benzylaminopurine-d5
CAT No: VS-A186578
CAS No: 2322358-20-1
Mol.F.: C12H6D5N5
Mol.Wt.: 230.28
Status: Custom Synthesis
Azoxystrobin-d3
CAT No: VS-A186579
CAS No: NA
Mol.F.: C22H14D3N3O5
Mol.Wt.: 406.41
Status: Custom Synthesis
Azamethiphos-d6
CAT No: VS-A186586
CAS No: 1189894-02-7
Mol.F.: C9H4D6ClN2O5PS
Mol.Wt.: 330.71
Status: Custom Synthesis
Bis(2-ethylhexyl) Phthalate-d4
CAT No: VS-A186594
CAS No: 93951-87-2
Mol.F.: C24H34D4O4
Mol.Wt.: 394.58
Status: Custom Synthesis
Albuterol-D2
CAT No: VS-A186635
CAS No: NA
Mol.F.: C13H19D2NO3
Mol.Wt.: 241.32
Status: Custom Synthesis
Albuterol-D3
CAT No: VS-A186636
CAS No: 1219798-60-3
Mol.F.: C13H18D3NO3
Mol.Wt.: 242.33
Status: Custom Synthesis
AMOZ-D5
CAT No: VS-A186642
CAS No: 1017793-94-0
Mol.F.: C8H10D5N3O3
Mol.Wt.: 206.25
Status: Custom Synthesis
Carbadox-D3
CAT No: VS-A186670
CAS No: 1185240-06-5
Mol.F.: C11H7D3N4O4
Mol.Wt.: 265.24
Status: Custom Synthesis
Albendazole Sulfoxide D3
CAT No: VS-A186687
CAS No: 1448346-38-0
Mol.F.: C12H12D3N3O3S
Mol.Wt.: 284.4
Status: Custom Synthesis
Albendazole Sulfone D3
CAT No: VS-A186688
CAS No: 1448345-60-5
Mol.F.: C12H12D3N3O4S
Mol.Wt.: 300.4
Status: Custom Synthesis
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