API Name : Labelled stable isotope standards-API'S & API Impurities

Labelled stable isotope standards-API'S & API Impurities

Venkatasai is a leading provider of pharmaceutical reference standards, specializing in the supply of high-purity Labelled stable isotope standards-API'S & API Impurities 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 Labelled stable isotope standards-API'S & API Impurities-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.

Adenine-2- D1

Picture of Adenine-2- D1
CAT No: VS-L102000
CAS No: 109923-52-6
Mol.F.: C5H4DN5
Mol.Wt.: 136.13
Status: In Stock

Adenosine-2 D1

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CAT No: VS-L102001
CAS No: 109923-50-4
Mol.F.: C10H12DN5O4
Mol.Wt.: 268.25
Status: In Stock

Cytidine-5,6 D2

Picture of Cytidine-5,6 D2
CAT No: VS-L102002
CAS No: 40632-25-5
Mol.F.: C9H11D2N3O5
Mol.Wt.: 245.23
Status: In Stock

Cytosine-5,6 D2

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CAT No: VS-L102003
CAS No: 106391-24-6
Mol.F.: C4H3D2N3O
Mol.Wt.: 113.12
Status: In Stock

2'-Deoxyuridine-13C,15N2

Picture of 2'-Deoxyuridine-13C,15N2
CAT No: VS-L102004
CAS No: 369656-76-8
Mol.F.: C813CH1215N2O5
Mol.Wt.: 231.18
Status: In Stock

2'-Deoxyuridine-5,6 D2

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CAT No: VS-L102005
CAS No: 40632-23-3
Mol.F.: C9H10D2N2O5
Mol.Wt.: 230.22
Status: In Stock

5,6-Dihydro Thymine-d6

Picture of 5,6-Dihydro Thymine-d6
CAT No: VS-L102006
CAS No: 334473-42-6
Mol.F.: C5H2D6N2O2
Mol.Wt.: 134.17
Status: In Stock

5,6-Dihydrouracil-5,5,6,6-d4

Picture of 5,6-Dihydrouracil-5,5,6,6-d4
CAT No: VS-L102007
CAS No: 334473-41-5
Mol.F.: C4H2D4N2O2
Mol.Wt.: 118.13
Status: In Stock

2′-Fluoro-2'-deoxyuridine-5,6-d2

Picture of 2′-Fluoro-2'-deoxyuridine-5,6-d2
CAT No: VS-L102008
CAS No: 362049-50-1
Mol.F.: C9H9D2FN2O5
Mol.Wt.: 248.21
Status: In Stock

5-Methyl-d3-cytosine-6-d1

Picture of 5-Methyl-d3-cytosine-6-d1
CAT No: VS-L102009
CAS No: 1219795-15-9
Mol.F.: C5H3D4N3O
Mol.Wt.: 129.16
Status: In Stock

5-Methyl Uridine-d4

Picture of 5-Methyl Uridine-d4
CAT No: VS-L102010
CAS No: 82845-85-0
Mol.F.: C10H10D4N2O6
Mol.Wt.: 262.25
Status: In Stock

Thymidine-alpha,alpha,alpha,6D4

Picture of Thymidine-alpha,alpha,alpha,6D4
CAT No: VS-L102011
CAS No: 347841-67-2
Mol.F.: C10H10D4N2O5
Mol.Wt.: 246.26
Status: In Stock

Thymine-alpha,alpha,alpha,6 D4

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CAT No: VS-L102012
CAS No: 156054-85-2
Mol.F.: C5H2D4N2O2
Mol.Wt.: 130.14
Status: In Stock

Uracil-5-d1

Picture of Uracil-5-d1
CAT No: VS-L102013
CAS No: 24897-50-5
Mol.F.: C4H3DN2O2
Mol.Wt.: 113.09
Status: In Stock

Uracil-6-d1

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CAT No: VS-L102014
CAS No: 24897-51-6
Mol.F.: C4H3DN2O2
Mol.Wt.: 113.09
Status: In Stock

Uracil-1,3-d2

Picture of Uracil-1,3-d2
CAT No: VS-L102015
CAS No: 20666-60-8
Mol.F.: C4H2D2N2O2
Mol.Wt.: 114.1
Status: In Stock

Uracil-5,6-d2

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CAT No: VS-L102016
CAS No: 24897-52-7
Mol.F.: C4H2D2N2O2
Mol.Wt.: 114.1
Status: In Stock

Uracil D4

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CAT No: VS-L102017
CAS No: 24897-55-0
Mol.F.: C4D4N2O2
Mol.Wt.: 116.11
Status: In Stock

Uridine-2-13C

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CAT No: VS-L102018
CAS No: 35803-42-0
Mol.F.: C813CH12N2O6
Mol.Wt.: 245.2
Status: In Stock

Uridine-5,6 D2

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CAT No: VS-L102019
CAS No: 40632-21-1
Mol.F.: C9H10D2N2O6
Mol.Wt.: 246.22
Status: In Stock

Efinaconazole 13CD2

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CAT No: VS-L102020
CAS No: NA
Mol.F.: C1713CH20D2F2N4O
Mol.Wt.: 351.4
Status: In Stock

Efinaconazole 13CD6

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CAT No: VS-L102021
CAS No: NA
Mol.F.: C1713CH16D6F2N4O
Mol.Wt.: 355.43
Status: In Stock

Ondansetron 13CD3

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CAT No: VS-L102022
CAS No: NA
Mol.F.: C1713CH16D3N3O
Mol.Wt.: 297.38
Status: In Stock

Hydrochlorothiazide 15N2,13CD2

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CAT No: VS-L102023
CAS No: NA
Mol.F.: C613CH6D2ClN15N2O4S2
Mol.Wt.: 302.73
Status: In Stock

Tacrolimus-13C-D4

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CAT No: VS-L102024
CAS No: NA
Mol.F.: C4313CH65D4NO12
Mol.Wt.: 809.04
Status: In Stock

Riociguat-13C-d3

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CAT No: VS-L102025
CAS No: 2749393-44-8
Mol.F.: C1913CH16FN8O2D3 
Mol.Wt.: 426.4
Status: In Stock

Nintedanib-13CD3

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CAT No: VS-L102026
CAS No: NA
Mol.F.: C3013CH30D3N5O4
Mol.Wt.: 543.65
Status: In Stock

5-Methyluridine-1',2',3',4',5'-13C5

Picture of 5-Methyluridine-1',2',3',4',5'-13C5
CAT No: VS-L102027
CAS No: 159496-17-0
Mol.F.: C513C5H14N2O6
Mol.Wt.: 263.2
Status: Custom Synthesis

rac trans-4-Hydroxy Glyburide-13C,d3

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CAT No: VS-L102028
CAS No: 1217639-30-9
Mol.F.: C2213CH25D3ClN3O6S
Mol.Wt.: 514.01
Status: In Stock

rac cis-3-Hydroxy Glyburide-13C,d3

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CAT No: VS-L102029
CAS No: 1217848-91-3
Mol.F.: C2213CH25D3ClN3O6S
Mol.Wt.: 514.01
Status: In Stock

Pseudooxynicotine-d4 Nitroso Impurity

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CAT No: VS-L102030
CAS No: 764661-24-7
Mol.F.: C10H9D4N3O2
Mol.Wt.: 211.3
Status: Custom Synthesis

N-Nitrosonornicotine-D4

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CAT No: VS-L102031
CAS No: 66148-19-4
Mol.F.: C9H7D4N3O
Mol.Wt.: 181.2
Status: Custom Synthesis

4-(Trifluoromethyl)benzoic acid-13C6

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CAT No: VS-L102032
CAS No: 2731552-41-1
Mol.F.: C8H5F3O2
Mol.Wt.: 196.08
Status: Custom Synthesis

Tacrolimus-13C,D2

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CAT No: VS-L102033
CAS No: 1356841-89-8
Mol.F.: C4313CH67D2NO12
Mol.Wt.: 807.0
Status: Custom Synthesis

9-Aminoacridine-13C6

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CAT No: VS-L102034
CAS No: NA
Mol.F.: C713C6H10N2
Mol.Wt.: 200.19
Status: Custom Synthesis

Apalutamide 13CD3

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CAT No: VS-L102035
CAS No: NA
Mol.F.: C2013CH12D3F4N5O2S
Mol.Wt.: 481.45
Status: Custom Synthesis

Axitinib-13CD3

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CAT No: VS-L102036
CAS No: 1261432-00-1
Mol.F.: C2113CH15D3N4OS
Mol.Wt.: 390.5
Status: Custom Synthesis

Desacetyl Triflusal-13C6

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CAT No: VS-L102037
CAS No: 1246817-12-8
Mol.F.: C213C6H5F3O3
Mol.Wt.: 212.07
Status: Custom Synthesis

Triflusal-13C6

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CAT No: VS-L102038
CAS No: 1276355-35-1
Mol.F.: C413C6H7F3O4
Mol.Wt.: 254.11
Status: Custom Synthesis

24-Methylenecholesterol-13C,D2

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CAT No: VS-L102039
CAS No: NA
Mol.F.: C27 13CH44D2O
Mol.Wt.: 401.67
Status: Custom Synthesis

Omeprazole-13C,D3

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CAT No: VS-L102040
CAS No: 1261395-28-1
Mol.F.: C1613CH16D3N3O3S
Mol.Wt.: 349.4
Status: Custom Synthesis

Omeprazole-13C,D3 Sulfone N-Oxide

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CAT No: VS-L102041
CAS No: NA
Mol.F.: C1613CH16D3N3O5S
Mol.Wt.: 381.43
Status: Custom Synthesis

Omeprazole Sulfide-13C,D3

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CAT No: VS-L102042
CAS No: NA
Mol.F.: C1613CH16D3N3O2S
Mol.Wt.: 333.43
Status: Custom Synthesis

Omeprazole-13C,D3 Sulfone

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CAT No: VS-L102043
CAS No: 1261393-28-5
Mol.F.: C1613CH16D3N3O4S   
Mol.Wt.:  365.43
Status: Custom Synthesis

Exemestane-13CD4

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CAT No: VS-L102044
CAS No: NA
Mol.F.: C1913CH20D4O2
Mol.Wt.: 301.42
Status: Custom Synthesis

Erdosteine-13C4

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CAT No: VS-L102045
CAS No: 2748548-92-5
Mol.F.: C413C4H11NO4S2
Mol.Wt.: 253.27
Status: Custom Synthesis

Tiopronin-13C,D3

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CAT No: VS-L102046
CAS No: 1189695-13-3
Mol.F.: C413CH6D3NO3S
Mol.Wt.: 167.2
Status: Custom Synthesis

Sacubitril-13C4 Calcium

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CAT No: VS-L102047
CAS No: NA
Mol.F.: C2013C4H28NO5.1/2Ca
Mol.Wt.: 434.5
Status: Custom Synthesis

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