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

Quinone Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Anthraquinonesulfonic Acid Sodium Salt-d7 Stable Isotopes CS-T-99379 Not Available Enquire
5,6-Orthoquinone Primaquine-d6 Hydrobromide (Major) (~85%) Stable Isotopes CS-T-99923 Not Available Enquire
5-Methoxy-2-methyl-1,4-naphthoquinone-d3 Stable Isotopes CS-T-101145 22266-99-5(Unlabelled) Enquire
Menaquinone 4-d7(Mixture of cis-trans isomers) Stable Isotopes CS-T-95475 1233937-25-1 Enquire
Menaquinone 7-d7 2,3-Epoxide Stable Isotopes CS-T-101157 Not Available Enquire
Menaquinone-4-[13C6] (MK4-[13C6]) Stable Isotopes CS-I-00437 Not Available Enquire
Menaquinone-7-[13C6] (MK7-[13C6]) Stable Isotopes CS-I-00438 Not Available Enquire
Menaquinone-9-[13C6] (MK-9-[13C6]) Stable Isotopes CS-I-00439 Not Available Enquire
Menaquinone-9-[d7] (MK9-[d7]) Stable Isotopes CS-I-00440 Not Available Enquire
Mitoquinone-d15 Mesylate Stable Isotopes CS-T-102208 Not Available Enquire
N-Acetyl-4-benzoquinone Imine-D3 Stable Isotopes CS-T-94753 50700-49-7(Unlabelled) Enquire
p-Benzoquinone-13C6 Stable Isotopes CS-T-95658 153001-29-7 Enquire
Phylloquinone-d3 Stable Isotopes CS-B-00351 84-80-0 (unlabeled) Enquire
Thymoquinone-13C,d3 Stable Isotopes CS-T-103796 490-91-5(unlabelled) Enquire
[U-Ring-13C6]-Hydroquinone Stable Isotopes CS-EK-00557 123-31-9 unlabeled Enquire
1,4-Naphthoquinone-d6 Stable Isotopes CS-T-95407 26473-08-5 Enquire
1,8-Dihydroxyanthraquinone-d6 Stable Isotopes CS-T-89385 1246816-27-2 Enquire
6PPD-quinone-D5 Stable Isotopes CS-T-95313 Not Available Enquire
Anthraquinone D8 Stable Isotopes CS-T-48285 10439-39-1 Enquire
Hydroquinone D6 Stable Isotopes CS-CX-00496 71589-26-9 Enquire
Menaquinone 4-d7 2,3-Epoxide Stable Isotopes CS-T-80127 1233937-43-3 Enquire
Menaquinone 6-d7 Stable Isotopes CS-T-82214 1233937-29-5 Enquire
Menaquinone 7-d7 Stable Isotopes CS-T-57477 1233937-31-9 Enquire
Menaquinone 9-d7 (~90%) Stable Isotopes CS-T-95476 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Hydroquinone API CS-T-26487 123-31-9 In Stock
Menaquinone 9 API CS-T-57478 523-39-7 In Stock
Menaquinone-7 API CS-T-57476 2124-57-4 In Stock
Thymoquinone API CS-T-44330 490-91-5 In Stock
Anthraquinone API CS-T-03970 84-65-1 Enquire
Dopaquinone API CS-T-53971 25520-73-4 Enquire
Dopaquinone (Racemic) API CS-O-42530 4430-97-1 Enquire
Dopaquinone Lactone API CS-T-21324 255829-51-7 Enquire
Dopaquinone Sulphate API CS-O-45964 1797832-49-5 Enquire
Menaquinone 10 API CS-T-31769 523-40-0 Enquire
Menaquinone 8 API CS-T-31767 523-38-6 Enquire
Mitoquinone mesylate API CS-AV-00071 845959-50-4 Enquire
Thionaphthenquinone API CS-T-44234 493-57-2 Enquire
Thymohydroquinone API CS-T-86715 2217-60-9 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,4-Diamino-2,3-dichloroanthraquinone Impurity CS-DE-01665 81-42-5 Enquire
Anthraquinone Impurity 8 Impurity CS-O-59924 518-83-2 Enquire
Diclofenac 2,5-Quinone Imine Impurity CS-P-07604 1254576-93-6 Enquire
Hydroquinone Impurity 1 Impurity CS-P-01766 2474-72-8 Enquire
Hydroquinone Impurity 9 Impurity CS-O-56851 2749982-54-3 Enquire
Pyrroloquinoline quinone Impurity CS-T-53014 72909-34-3 Enquire
Pyrroloquinoline Quinone Disodium Trihydrate Impurity CS-O-58889 1519046-70-8 Enquire
Rifapentine Quinone Impurity CS-EO-01925 ---- Enquire
Tigecycline (open C-ring D-ring) Quinone Impurity CS-T-62073 1268494-46-7 In Stock
1-(Isopropylamino)anthraquinone Impurity CS-T-29873 27354-18-3 Enquire
1,2-Naphtoquinone-4-sulfonic acid Potassium salt Impurity CS-BX-00573 5908-27-0 Enquire
1,4-Benzoquinone Monoguanylhydrazone Impurity CS-T-05076 7316-92-9 Enquire
1,4-Diaminoanthraquinone Impurity CS-T-16821 128-95-0 Enquire
2,3,6,7-Tetramethoxyanthraquinone Impurity CS-M-08386 5629-55-0 Enquire
2,3-Dimethoxy-5-methyl-1,4-hydroquinone Impurity CS-T-18547 3066-90-8 Enquire
2,5-Diphenyl-P- Benzoquinone Impurity CS-CJ-00096 844-51-8 Enquire
2,6-Dimethoxy-1,4-benzoquinone Impurity CS-BT-00071 530-55-2 Enquire
2-Hydroxy-3-methylanthraquinone Impurity CS-T-27806 17241-40-6 Enquire
Adrenaline-quinone Impurity CS-O-35618 62358-01-4 Enquire
Anthraquinone Related Compound 1 Impurity CS-P-00637 17062-54-3 Enquire
Anthraquinone Related Compound 2 Impurity CS-P-00638 Not Available Enquire
Anthraquinone-2,6-disulfonic acid disodium salt Impurity CS-DL-00937 853-68-9 Enquire
Benzopyrene Related Compound 7 (Benzo[a]pyrene-3, 6- Quinone... Impurity CS-P-07320 64133-78-4 Enquire
Benzopyrene Related Compound 8 (Benzo[a]pyrene-1, 6- Quinone... Impurity CS-P-07321 64133-79-5 Enquire
Bromoaminic acid 1-Amino-4-bromoanthraquinone-2-sulfonic aci... Impurity CS-CD-00127 116-81-4 Enquire
Cannabidiol hydroxyquinone Impurity CS-O-40796 137252-25-6 Enquire
Cis Menaquinone 7 Impurity CS-O-42243 ---- Enquire
Desacetyl Rifampicin Quinone Impurity CS-T-51641 65110-92-1 Enquire
Etoposide 3',4'-Quinone Impurity CS-T-54635 105016-65-7 Enquire
Hydroquinone Impurity II Impurity CS-P-01767 Not Available Enquire
Hydroquinone Impurity III Impurity CS-P-01768 Not Available Enquire
Hydroquinone Impurity IV Impurity CS-P-01769 Not Available Enquire
Hydroquinone Impurity V Impurity CS-P-01770 Not Available Enquire
Hydroquinone Impurity VI Impurity CS-P-01771 Not Available Enquire
Hydroquinone Impurity VII Impurity CS-P-01772 Not Available Enquire
Hydroquinone Impurity VIII Impurity CS-P-01773 Not Available Enquire
Menaquinone 4 2,3-Epoxide Impurity CS-T-31773 72908-86-2 Enquire
trans-2-Methyl-3-(5’-carboxy-3’-methyl-2’-pentenyl)-1,4-naph... Impurity CS-T-81218 34185-71-2 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-(Chloromethyl)anthraquinone Intermediate CS-ED-42178 6374-87-4 Enquire
2,5-Di-tert-butylhydroquinone Intermediate CS-M-57344 88-58-4 In Stock
2-Amino-3-chloro-1,4-naphthoquinone Intermediate CS-T-65737 2797-51-5 In Stock
4-bromo-1-hydroxyanthraquinone-2-carboxylic acid Intermediate CS-ED-42177 320576-21-4 Enquire
Sodium 1,2-Napthoquinone-4-sulfonate Intermediate CS-T-42495 521-24-4 In Stock
1,5-Dihydroxy-4,8-dinitroanthraquinone Intermediate CS-ED-42311 128-91-6 Enquire


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Pyronaridine Quinoneimine (M3) Glucuronide CS-O-59730 808135-31-1 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,2-Benzoquinone Fine Chemicals CS-BX-02867 583-63-1 Enquire
1-Amino-2-bromo-4-hydroxyanthraquinone Fine Chemicals CS-ED-42179 116-82-5 Enquire
2,3,5,6-Tetrachlorobenzo-1,4-quinone Fine Chemicals CS-M-43052 118-75-2 In Stock
2,3-Dichlorohydroquinone Fine Chemicals CS-O-59937 608-44-6 Enquire
2,6-Di-Tert-Butyl-p-Benzoquinone Fine Chemicals CS-T-17352 719-22-2 In Stock
2,7-Dimethoxy-1,4-naphthoquinone Fine Chemicals CS-O-57797 6223-34-3 Enquire
2-Chloro-1,4-naphthoquinone Fine Chemicals CS-O-10911 1010-60-2 In Stock
2-Hydroxy-1,4-naphthoquinone Fine Chemicals CS-DV-01731 83-72-7 In Stock
2-Methyl-5-methoxy-6-hydroxy-1,4-naphthoquinone Fine Chemicals CS-O-57598 7539-90-4 Enquire
2-Methyl-6-phytylhydroquinone Fine Chemicals CS-BL-00108 54432-31-4 Enquire
Dibromothymoquinone Fine Chemicals CS-ED-00437 29096-93-3 Enquire
Phenyl-1,4-benzoquinone Fine Chemicals CS-O-37697 363-03-1 In Stock
Phytyl trimethylhydroquinone diacetate Fine Chemicals CS-O-33124 85314-71-2 In Stock
1,4-Anthraquinone Fine Chemicals CS-E-00026 635-12-1 Enquire
1,4-Dihydroxyanthraquinone Fine Chemicals CS-ZH-03064 81-64-1 Enquire
1,4-naphthaquinone Fine Chemicals CS-O-10742 130-15-4 Enquire
2,6-Dimethylhydroquinone Fine Chemicals CS-M-01787 654-42-2 Enquire
2-Carboxyquinone Fine Chemicals CS-T-69305 5794-62-7 Enquire
3,5-Di-tert-butyl-o-benzoquinone Fine Chemicals CS-T-17326 3383-21-9 Enquire
3,6-Di-tert-butyl-o-benzoquinone Fine Chemicals CS-T-17327 34105-76-5 Enquire
Demethylasterriquinone B1 Fine Chemicals CS-ZG-31067 78860-34-1 Enquire
Dopamine quinone Fine Chemicals CS-ZG-84048 50673-96-6 Enquire
Quinacridonequinone Fine Chemicals CS-BX-00729 1503-48-6 Enquire
Tetra-tert-butyldiphenoquinone Fine Chemicals CS-T-61736 2455-14-3 Enquire
Thymohydroquinone (THQ) Fine Chemicals CS-AF-00121 2217-60-9 Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,4-Benzoquinone Secondary Standards CS-SS-24085-1GM 106-51-4 In Stock
1,4-Benzoquinone Secondary Standards CS-SS-26532 106-51-4 Enquire
Hydroquinone Secondary Standards CS-SS-24452-1GM 123-31-9 Enquire
Menaquinone -7 Secondary Standards CS-SS-25236-3 x 75MG 2124-57-4 Enquire
Menaquinone-4 Secondary Standards CS-SS-25166-100MG 863-61-6 Enquire
tert-Butylhydroquinone Secondary Standards CS-SS-26117-500MG 1948-33-0 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(±)-Epichlorohydrin-2-d1(stabilized withhydroquinone) Stable Isotope Reagent CS-C-01939 70735-27-2 Enquire
Acrylonitrile-2-d1(stabilized with hydroquinone) Stable Isotope Reagent CS-C-01656 4635-82-9 Enquire
Acrylonitrile-d3 (Stabilized with Hydroquinone) Stable Isotope Reagent CS-C-00308 53807-26-4 Enquire
Hydroquinone-d4 Stable Isotope Reagent CS-T-26488 25294-85-3 In Stock
Methyl Acrylate-d3(stabilized withhydroquinone) Stable Isotope Reagent CS-C-02089 71016-31-4 Enquire
Methyl Methacrylate-3,3-d2 (stabilized with hydroquinone) Stable Isotope Reagent CS-C-02116 55063-97-3 Enquire
Styrene-beta,beta-d2 (stabilized with hydroquinone) Stable Isotope Reagent CS-C-01599 934-85-0 Enquire
Styrene-d5(Stabilized with Hydroquinone) Stable Isotope Reagent CS-T-61434 5161-29-5 In Stock
(±)-1,2-Propylene-3,3,3-d3 Oxide (stabilized with hydroquino... Stable Isotope Reagent CS-C-01450 2245-32-1 Enquire
1,1-Dichloroethylene-d2 (stabilized with hydroquinone) Stable Isotope Reagent CS-C-00851 22280-73-5 Enquire
1,3-Butadiene-d6 (gas) (stabilized with hydroquinone) Stable Isotope Reagent CS-C-00079 1441-56-1 Enquire
1,4-Benzoquinone-d4 Stable Isotope Reagent CS-C-00281 2237-14-1 Enquire
2-Hydroxy-1,4-naphthoquinone-5,6,7,8-D4 Stable Isotope Reagent CS-C-00401 83-72-7(Unlabeled) Enquire
2-Methyl-d3-1,4-naphthoquinone Stable Isotope Reagent CS-C-00661 5172-16-7 Enquire
Acrylic Acid-d4 (stabilized with hydroquinone) Stable Isotope Reagent CS-C-00299 285138-82-1 Enquire


Analytical Standard

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Acrylonitrile-d3 (Stabilized with Hydroquinone)-AR Grade Analytical Standard CS-C-00308-10MG 53807-26-4 Enquire
Acrylonitrile-d3 (Stabilized with Hydroquinone)-AR Grade-10 ... Analytical Standard CS-C-00308-1ML 53807-26-4 Enquire


Therapeutic

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Rifampicin Quinone Therapeutic CS-O-02228 13983-13-6 In Stock


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Neoprzewaquinone A Pesticide Standards CS-BT-00469 630057-39-5 Enquire


Pharmaceutical Stds.

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Methyl-1,4-benzoquinone, reagent grade 98 % Pharmaceutical Stds. CS-O-35661 553-97-9 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-adamantane-1-yl-o-quinone Building Blocks CS-O-48202 Not Available Enquire
2,6-Dimethylbenzoquinone Building Blocks CS-TB-27111 527-61-7 Enquire
3,8-Dimethylacenaphthenequinone Building Blocks CS-TB-28965 146885-81-6 Enquire


Dyes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Dihydroxyanthraquinone Dyes CS-O-57973 1322-60-7 Enquire


Enzymes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ubiquinone Q-12 Enzymes CS-O-15049 24663-36-3 In Stock