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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Carbazole, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Carbazole 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 Carbazole-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.

Carbazole Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-(phenyl-2,3,4,5,6-d5)-9H-Carbazole Stable Isotopes CS-O-42172 2375066-12-7 Enquire
3-​(phenyl-​2,​3,​4,​5,​6-​d5)​-9H-​Carbazole Stable Isotopes CS-O-42170 1628788-85-1 Enquire
3-Benzyloxy-4-oxiranylmethyl-d5-9H-carbazole N-Carboxylic Ac... Stable Isotopes CS-T-100782 Not Available Enquire
3-Bromocarbazole-d7 Stable Isotopes CS-O-54382 2764814-81-3 Enquire
4-(2,3-Epoxypropoxy-d5)carbazole Stable Isotopes CS-T-100353 51997-51-4 (Unlabelled) Enquire
4,4'-[9H-Carbazole-3,6-diyldi-(1E)-2,1-ethenediyl]bis[1-meth... Stable Isotopes CS-T-100686 647859-37-8(unlabeled) Enquire
5-([1,1'-biphenyl]-3-yl-d9)-5,8-dihydroindolo[2,3-c]carbazol... Stable Isotopes CS-O-53715 ---- Enquire
9-(3-bromophenyl-2,4,5,6-d4)-9H-3,9'-bicarbazole-1,1',2,2',3... Stable Isotopes CS-O-60196 3060999-45-0 Enquire
9-(4-(3H-carbazol-9(4H)-yl)phenyl)-9H-carbazole - D20 Stable Isotopes CS-O-51609 Not Available Enquire
9-[4-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenyl]-N3,N3,N6,N6-te... Stable Isotopes CS-O-51606 1613074-59-1(Unlabelled) Enquire
Carbazole-d7 Stable Isotopes CS-O-45901 86-74-8 (Unlabelled) In Stock
N-Phenylcarbazole-d13 Stable Isotopes CS-O-53544 2847910-31-8 In Stock
9-Methyl-3-(oxiran-2-ylmethoxy)-9H-carbazole-d3 Stable Isotopes CS-T-80426 1346602-04-7 Enquire
rac-6-Cyano-3-N-methylamino-1,2,3,4-tetrahydrocarbazole-d3 Stable Isotopes CS-T-91939 1794979-58-0 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-[4-(4,6-Diphenyl-1,3,5-triazin-2-yl)phenyl]-N3,N3,N6,N6-te... API CS-O-51603 1613074-59-1 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxy Carbazole Metabolite CS-O-31211 52602-39-8 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxy-9-methyl Carbazole Impurity CS-O-56555 247096-42-0 Enquire
6-Carboxamido-3-phthalimido-1,2,3,4-tetrahydrocarbazole Impurity CS-O-43269 147009-23-2 Enquire
(R)-(-)-4-(2,3-Epoxypropoxy)carbazole Impurity CS-T-54117 95093-96-2 Enquire
(S)-(+)-4-(2,3-Epoxypropoxy)carbazole Impurity CS-T-21824 95093-95-1 Enquire
1,4-Dimethyl-9H-carbazole-3-carbaldehyde Impurity CS-M-47129 14501-66-7 Enquire
2-Acetylcarbazole Impurity CS-T-00356 23592-74-7 Enquire
3-Methyl-2,3,4,9-tetrahydro-1H-carbazole Impurity CS-M-47494 6933-54-6 Enquire
5,11-Dihydro-2,10-dihydroxyindolo[3,2-b]carbazole-6-carboxal... Impurity CS-T-53038 549548-28-9 Enquire
5,11-Dihydro-2,8-dihydroxyindolo[3,2-b]carbazole-6-carboxald... Impurity CS-T-53037 549548-29-0 Enquire
5,11-Dihydro-2-hydroxyindolo[3,2-b]carbazole-6-carboxaldehyd... Impurity CS-T-53100 549548-26-7 Enquire
5,11-Dihydro-4,8-dihydroxyindolo[3,2-b]carbazole-6-carboxald... Impurity CS-T-53039 549548-27-8 Enquire
5,11-Dihydro-8-hydroxyindolo[3,2-b]carbazole-6-carboxaldehyd... Impurity CS-T-53101 549548-25-6 Enquire
5,12-dihydro-5-phenyl-Indolo[3,2-a]carbazole Impurity CS-DV-02965 1247053-55-9 Enquire
6-Chloro-β,-β-dimethoxy-α-methyl-9H-carbazole... Impurity CS-T-50643 114041-35-9 Enquire
7H-Dibenzo[c,g]carbazole Impurity CS-T-52445 194-59-2 Enquire
9,9'-[[1,1'-Biphenyl]-4,4'-diyl]bis[3-ethenyl-9H-carbazole] Impurity CS-O-37291 908147-48-8 Enquire
9-[1,1-biphenyl]-3-yl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaboro... Impurity CS-DV-03417 1533406-38-0 Enquire
9-bromo-8-methoxy-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[... Impurity CS-DV-03423 1256579-03-9 Enquire
9-Ethyl-6,11-dihydro-8-hydroxy-6,6-dimethyl-11-oxo-5H-benzo[... Impurity CS-T-76222 1256584-52-7 Enquire
9-Ethyl-6,6-dimethyl-8-(4-morpholinopiperidin-1-yl)-11-oxo-6... Impurity CS-O-35982 Not Available Enquire
9H-Carbazole 3-Oxoacetic Acid Impurity CS-T-71014 1094264-08-0 Enquire
9H-Carbazole,9-[1,1-biphenyl]-4-yl-3-(4,4,5,5-tetramethyl-1,... Impurity CS-DV-03425 1391729-66-0 Enquire
9-Methyl-9H-carbazole-3-carbaldehyde Impurity CS-M-17813 21240-56-2 Enquire
9-Methyl-9H-carbazole-3-carboxylic acid Impurity CS-M-07337 89374-79-8 Enquire
Carvedilol 4-Hydroxy Carbazole Impurity Impurity CS-O-07541 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
12,12-dimethyl-11,12-dihydroindeno[2,1-a]carbazole Intermediate CS-BX-02640 1329054-41-2 Enquire
4-Hydroxy Carbazole Intermediate CS-M-34850 54989-33-2 In Stock
9-(2-Bromophenyl)-9H-carbazole Intermediate CS-DV-03401 902518-11-0 In Stock
Carbazole Intermediate CS-O-07543 86-74-8 In Stock
N3,N3,N6,N6-tetrakis(4-methoxyphenyl)-9H-carbazole-3,6-diami... Intermediate CS-O-47682 1630723-98-6 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-(tert-Butyl)-9H-carbazole Fine Chemicals CS-BL-00150 22401-74-7 Enquire
1-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-9H-carbazol... Fine Chemicals CS-O-34319 1219637-88-3 Enquire
2-chloro-9H-carbazole Fine Chemicals CS-DV-01654 10537-08-3 Enquire
3,6-Di-tert-butyl-9H-carbazole Fine Chemicals CS-DV-02066 37500-95-1 Enquire
3-Bromo-9-naphthalen-2-yl-9H-carbazole Fine Chemicals CS-H-00412 934545-80-9 Enquire
3-Bromo-9-p-tolyl-9H-carbazole Fine Chemicals CS-H-00388 731016-44-7 Enquire
3-Chloro-6,7,8,9-tetrahydro-5H-carbazole-4-carboxylic acid Fine Chemicals CS-MM-41610 876885-94-8 Enquire
3-cyano-2,3,4,9-tetrahydro-1H-carbazole Fine Chemicals CS-O-40375 897660-85-4 Enquire
4-methyl-2,3,4,9-tetrahydro-1H-carbazole Fine Chemicals CS-O-40377 19283-54-6 Enquire
6,7,8,9-tetrahydro-5H-carbazole-4-carboxylic acid Fine Chemicals CS-O-36420 784143-99-3 Enquire
9-Biphenyl-4-yl-3-bromo-9H-carbazole Fine Chemicals CS-H-00413 894791-46-9 Enquire
9-Vinylcarbazole Fine Chemicals CS-ZH-36074 1484-13-5 Enquire
Carbazole-3-boronic Acid Pinacol Ester Fine Chemicals CS-DJ-00696 855738-89-5 Enquire
N-Phenylcarbazole Fine Chemicals CS-O-38771 1150-62-5 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-Nitroso-4-(oxiran-2-ylmethoxy)-9H-carbazole Nitrosamine CS-O-48845 Not Available Enquire
Nitroso-4 -Hydroxy Carbazole Nitrosamine CS-O-45005 Not Available Enquire
N-Nitroso (carbazole) Carvedilol Nitrosamine CS-EO-01205 ---- In Stock
N-Nitroso Carbazole Nitrosamine CS-O-54771 2788-23-0 Enquire


OLED

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl-2,4... OLED CS-O-59809 ---- Enquire


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Methyl 3-carbazolecarboxylate Pesticide Standards CS-BT-00437 97931-41-4 Enquire


Polymers

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Poly(N-vinyl carbazole) Polymers CS-PM-00190 25067-59-8 Enquire
Poly(styrene–co–9-vinyl carbazole), (a-hydroxy, w-TEMPO)-ter... Polymers CS-PM-01401 Not Available Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-(9-Carbazolyl)Carbazole-d15 Stable Isotope Reagent CS-O-47321 2778147-40-1 In Stock
1-bromo carbazole-D7 Stable Isotope Reagent CS-O-48803 2964481-45-4 Enquire
3,6-dibromo-9H-carbazole-D6 Stable Isotope Reagent CS-O-50189 2844363-58-0 Enquire
3,6-Di-tert-butylcarbazole D24 Stable Isotope Reagent CS-O-52274 2468036-20-4 Enquire
3,9′-Bi-9H-carbazole D15 Stable Isotope Reagent CS-O-53446 2778147-33-2 Enquire
3-Iodocarbazole-d7 Stable Isotope Reagent CS-O-50592 2991941-39-8 In Stock
6-Bromo-9H-Carbazole-d7 Stable Isotope Reagent CS-O-50129 2764814-81-3 In Stock
9-(2-Borophenyl)-9H-Carbazole-d8 Stable Isotope Reagent CS-O-52496 2739675-49-9 In Stock
9-(2-Bromophenyl)-9H-Carbazole-d12 Stable Isotope Reagent CS-O-48595 2778147-30-9 In Stock
9-(2-Bromophenyl)-9H-Carbazole-d8 Stable Isotope Reagent CS-O-52359 902518-11-0 (Unlabelled) In Stock
9-(2-fluorophenyl)-9H-carbazole-d12 Stable Isotope Reagent CS-O-48593 2778147-41-2 Enquire
9-(5,9-dioxa-13b-boranaphtho[3,2,1-de]anthracen-7-yl)-9H-1,9... Stable Isotope Reagent CS-O-48590 2778145-64-3 Enquire
9-(Biphenyl-d9)-3-bromo-(9H-carbazole-d7) Stable Isotope Reagent CS-O-59932 3076811-59-8 Enquire
9,9'-(6-chloro-1,3,5-triazine-2,4-diyl)bis(9H-carbazole)-d16 Stable Isotope Reagent CS-O-48592 2778147-34-3 Enquire
9-[2-(4-Chloro-6-phenyl-1,3,5-triazin-2-yl)phenyl]-9H-carbaz... Stable Isotope Reagent CS-O-52624 2019977-51-4 (Unlabelled) Enquire
9-[2-(4-Chloro-6-phenyl-1,3,5-triazin-2-yl)phenyl]-9H-carbaz... Stable Isotope Reagent CS-O-52623 2019977-51-4 (Unlabelled) Enquire
9H-Carbazole-1,2,3,4,5,7,8-d7,6-bromo-9-phenyl-d5 Stable Isotope Reagent CS-O-59931 2939770-43-9 Enquire
9-(phenyl-2,3,4,5,6-d5)-3-(4,4,5,5-tetramethyl-1,3,2-dioxabo... Stable Isotope Reagent CS-O-42179 1345614-95-0 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-(2-Fluorophenyl)-9H-carbazole Building Blocks CS-O-48786 1801146-47-3 Enquire
9H-4,9'-Bicarbazole Building Blocks CS-O-48745 1226810-17-8 Enquire
6-Bromo-2,3,4,4a,9,9a-hexahydro-1H-carbazole Building Blocks CS-O-47644 859805-93-9 Enquire
9-(9-Heptadecanyl)-9H-carbazole-2,7-diboronic acid bis(pinac... Building Blocks CS-O-47632 958261-51-3 Enquire


Catalyst

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
9-[2-(Dicyclohexylphosphino)phenyl]-9H-carbazole Catalyst CS-BX-01268 1308652-64-3 Enquire
9-[2-(Diphenylphosphino)phenyl]-9H-carbazole (Ph PhenCar-Pho... Catalyst CS-BX-01222 1308652-67-6 Enquire


Deuterated Reagents

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Carbazole D8 Deuterated Reagents CS-T-93880 38537-24-5 In Stock
Carbazole-d8 (d-atom 80-90%) Deuterated Reagents CS-O-52003 38537-24-5 Enquire