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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Varenicline, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Varenicline impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Varenicline-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Varenicline Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso Varenicline 15N d2 Stable Isotopes CS-O-49260 Not Available Enquire
N-Nitroso Varenicline Impurity 17-d4 Stable Isotopes CS-O-59610 Not Available In Stock
N-Nitroso Varenicline-15N Stable Isotopes CS-O-39982 Not Available In Stock
N-nitrosovarenicline-d12 Stable Isotopes CS-O-40725 Not Available Enquire
Varenicline 13C15N Stable Isotopes CS-O-00654 249296-44-4 Enquire
Varenicline 13C2 15N2 Stable Isotopes CS-O-31047 2140265-12-7 Enquire
Varenicline Carbamoyl β-D-Glucuronide-d4 Stable Isotopes CS-T-101972 Not Available Enquire
Varenicline D4 Stable Isotopes CS-P-08216 2183239-01-0 Enquire
Varenicline Nitroso D4 Stable Isotopes CS-EO-02977 Not Available Enquire
Varenicline-d2,15N2 Dihydrochloride Stable Isotopes CS-T-101971 Not Available Enquire
Varenicline-d4 Dihydrochloride (Major) Stable Isotopes CS-T-93439 866823-63-4 (Unlabeled) Enquire
Varenicline-d4 Hydrochloride (Major) Stable Isotopes CS-T-93710 1185326-06-0 (Unlabeled) Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Varenicline API Standards CS-O-14487 249296-44-4 In Stock
Varenicline citrate API Standards CS-ED-41542 536696-70-5 Enquire
Varenicline Tartrate API Standards CS-O-31032 375815-87-5 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Formyl Varenicline Metabolites CS-O-05919 796865-82-2 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"Varenicline impurity, N-Hydroxy" Impurities CS-DN-00032 Not Available Enquire
(1S,5R)-Varenicline Impurity 14 Impurities CS-O-59351 Not Available Enquire
(6R,10R)-8-oxido-7,8,9,10-tetrahydro-6H-6,10-methanoazepino[... Impurities CS-O-57212 Not Available Enquire
(6R,10S)-Varenicline Impurity 20 Impurities CS-O-59349 Not Available Enquire
(6R,10S)-Varenicline Impurity 36 Impurities CS-O-59354 Not Available Enquire
(6R,10S)-Varenicline Impurity 37 Impurities CS-O-59356 Not Available Enquire
(6R,10S)-Varenicline N-Oxide Impurities CS-O-37887 Not Available Enquire
2,2,2-trifluoro-1-(1,2,4,5-tetrahydro-6,8-dinitro-1,5-methan... Impurities CS-O-16039 853946-18-6 In Stock
2,3,4,5-Tetrahydro-1,5-methano-1H-3-benzazepine-7,9-diamine Impurities CS-O-33139 950781-91-6 Enquire
2,3,4,5-Tetrahydro-1,5-methano-1H-3-benzazepine-7-amine Impurities CS-O-33137 357424-22-7 Enquire
2,3,4,5-Tetrahydro-3-(trifluoroacetyl)-1,5-methano-1H-3-benz... Impurities CS-O-33136 230615-56-2 Enquire
3-(Trifluoroacetyl)-8-nitro-2,3,4,5-Tetrahydro-1,5-methano-1... Impurities CS-O-33140 950781-89-2 Enquire
3-hydroxy-7,8,9,10-tetrahydro-6H-6,10-methanoazepino[4,5-g]q... Impurities CS-O-36015 2306217-11-6 Enquire
4,5-dihydro-1H-1,5-methanobenzo[d]azepine-3,7,8(2H)-triamine Impurities CS-O-36136 Not Available Enquire
4-Nitrobenzoyl Varenicline Impurities CS-T-83249 1329651-19-5 In Stock
bis(6,7,9,10-tetrahydro-8H-6,10-methanoazepino[4,5-g]quinoxa... Impurities CS-O-34823 Not Available Enquire
Depyrazine 6,8-Dinitro-3-nitroso Varenicline Impurities CS-O-44468 Not Available Enquire
Methyl Varenicline Impurities CS-T-82149 1333145-89-3 Enquire
Mono Nitroso Varenicline impurity Impurities CS-O-46079 Not Available In Stock
N-Acetyl Varenicline Impurities CS-O-33509 1213781-59-9 In Stock
N-nitroso Depyrazine 7,8-Dinitrophenyl Varenicline Impurities CS-O-36135 2803960-63-4 In Stock
N-Nitroso Varenicline Impurities CS-O-36107 2755871-02-2 In Stock
Varenicline 1-N-oxide Impurities CS-O-44780 2306217-12-7 In Stock
Varenicline Impurity Impurities CS-O-34534 Not Available Enquire
Varenicline Impurity 1 Impurities CS-O-14514 230615-53-9 In Stock
Varenicline Impurity 13 Hydrochloride Impurities CS-P-08621 1350219-74-7 Enquire
Varenicline Impurity 15 Impurities CS-EO-00932 2803960-64-5 In Stock
Varenicline Impurity 17 Impurities CS-EO-00931 Not Available In Stock
Varenicline Impurity 18 Impurities CS-EO-01913 2306217-15-0 In Stock
Varenicline Impurity 19 Impurities CS-O-59346 Not Available Enquire
Varenicline Impurity 2 Impurities CS-O-14515 357426-10-9 Enquire
Varenicline Impurity 25 Impurities CS-EO-01089 Not Available Enquire
Varenicline Impurity 3 Impurities CS-O-33141 357424-12-5 Enquire
Varenicline Impurity 3 Dihydrocloride Impurities CS-O-14516 Not Available Enquire
Varenicline Impurity 4 Impurities CS-O-14517 357424-21-6 Enquire
Varenicline Impurity 48 Impurities CS-EO-02272 Not Available Enquire
Varenicline Impurity 49 Impurities CS-EO-02271 Not Available Enquire
Varenicline Impurity 5 Impurities CS-O-14518 950781-87-0 Enquire
Varenicline Impurity 6 Impurities CS-O-14519 1026685-55-1 Enquire
Varenicline Maleate Adduct Impurities CS-O-57891 2272868-54-7 Enquire
Varenicline Metadiamino HCl impurity Impurities CS-DN-00038 Not Available Enquire
Varenicline Metadinitro Impurity Impurities CS-DN-00034 Not Available Enquire
Varenicline Monoamino Impurity Impurities CS-DN-00036 Not Available Enquire
Varenicline Mononitro Impurity/Impurity Impurities CS-DN-00035 Not Available Enquire
Varenicline N-dioxide Impurities CS-O-34679 Not Available Enquire
Varenicline N-dioxide HCl Impurities CS-O-44860 Not Available In Stock
Varenicline N-Methyl Impurity Impurities CS-DN-00037 328055-92-1 In Stock
Varenicline N-Oxide Impurities CS-O-14513 Not Available In Stock
Varenicline Tartrate Impurity C Impurities CS-O-35347 2724982-86-7 In Stock
Varenicline Tartrate Impurity-II Impurities CS-O-43821 Not Available Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-trifluoroacetyl Varenicline Intermediates CS-MM-12524 230615-70-0 In Stock
Varenicline Lactam Intermediates CS-T-62704 873302-30-8 Enquire
Varenicline N-Glucoside Intermediates CS-T-62703 873302-31-9 Enquire


Glucuronides

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Varenicline Carbamoyl-O-Beta-D-glucuronide Glucuronides CS-O-05713 535920-98-0 In Stock