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

Pregabalin Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-N-Methyl-d5 Pregabalin Stable Isotopes CS-T-80425 1246820-67-6 Enquire
(S)-Pregabalin-13C3 (S)-Mandelic Acid Salt Stable Isotopes CS-T-102399 Not Available Enquire
4-Isobutyl-2-pyrrolidinone-13C3 (pregabalin lactam impurity) Stable Isotopes CS-T-101216 Not Available Enquire
Methylpregabalin-13C-D3 Stable Isotopes CS-CX-00543 313651-25-1 unlabeled Enquire
Pregabalin D6 Stable Isotopes CS-BX-00632 148553-50-8 (Unlabeled) Enquire
Pregabalin-d4 Stable Isotopes CS-O-06883 1276197-54-6 In Stock
rac 4,5-Dehydro Pregabalin-13C3 Stable Isotopes CS-T-100555 Not Available Enquire
rac 5,6-Dehydro Pregabalin-13C3 Stable Isotopes CS-T-100554 Not Available Enquire
rac-Pregabalin 13C3 Stable Isotopes CS-T-57141 1189980-48-0 Enquire
Rac-Pregabalin 13C3 Stable Isotopes CS-EK-02580 128013-69-4 unlabeled Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Pregabalin API Standards CS-O-08019 148553-50-8 In Stock
Pregabalin Mandelate API Standards CS-EO-03786 1190093-99-2 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Methyl-pregabalin Metabolites CS-CX-00544 313651-25-1 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"(S)-4,5-Dehydro Pregabalin" Impurities CS-T-74075 1141362-54-0 Enquire
(3S)-3-(2-Amino-2-oxoethyl)-5-methylhexanoic Acid Impurities CS-ED-00352 181289-34-9 In Stock
(E) 2,3-Dehydro Pregabalin Impurities CS-P-08595 Not Available Enquire
(E)-2-Hydroxy-3-isopropyl-6-methylhept-3-enenitrile Impurities CS-O-42704 Not Available Enquire
(E)-4-Methyl-2-pentenenitrile Impurities CS-O-42702 19124-15-3 Enquire
(E)-4-methylpent-2-enoic acid Impurities CS-O-43022 16666-43-6 Enquire
(E)-ethyl 4-methylpent-2-enoate Impurities CS-T-94637 15790-86-0 Enquire
(R)-3-(2-methoxy-2-oxoethyl)-5-methylhexanoic acid Impurities CS-O-56519 156048-92-9 Enquire
(R)-4,5-Dehydro Pregabalin Impurities CS-O-14986 1101167-84-3 Enquire
(R)-5,6-dehydro Pregabalin Impurities CS-EO-00941 Not Available Enquire
(R)-Pregabalin Impurities CS-O-05753 148553-51-9 In Stock
(S)​-​2-​Isobutylsuccinic acid Impurities CS-O-42716 63163-11-1 Enquire
(S)-1-acetyl-4-isobutylpyrrolidin-2-one Impurities CS-EO-01365 1374336-43-2 In Stock
(S)-3-(((S)-3-(aminomethyl)-5-methylhexanamido)methyl)-5-met... Impurities CS-O-42714 Not Available Enquire
(S)-3-(isocyanato methyl)-5-methylhexanoic acid Impurities CS-O-36159 2102350-92-3 Enquire
(S)-3-carbamoyl-5-methylhexanoic acid Impurities CS-O-42717 Not Available Enquire
(S)-3-cyano-5-methylhexanoic acid Impurities CS-T-94638 181289-37-2 Enquire
(S)-4-isobutyldihydrofuran-2(3H)-one Impurities CS-O-39916 172796-26-8 Enquire
(S)-N-Methyl Pregabalin Impurities CS-T-81414 1155843-61-0 Enquire
(S)-Pregabalin Methyl Ester Impurities CS-T-40437 714230-22-5 Enquire
(Z)-2,3-Dehydro Pregabalin Impurities CS-O-36334 Not Available Enquire
2-(2-ethoxy-2-oxoethyl)-4-methylpentanoic acid Impurities CS-O-42707 Not Available Enquire
2,6-dihydroxy-4-isobutylpyridine-3,5-dicarbonitrile Impurities CS-O-52654 861318-48-1 Enquire
2-Chloro Pregabalin impurity Impurities CS-O-48847 Not Available Enquire
2-Isopropyl-5-methyl-2-hexenal Impurities CS-O-42706 35158-25-9 Enquire
3-(aminomethyl)-6-hydroperoxy-5-methylhexanoic acid Impurities CS-O-34975 Not Available Enquire
3-(bis(4-isobutyl-2-oxopyrrolidin-1-yl)methyl)-5-methylhexan... Impurities CS-O-51799 Not Available Enquire
3-Formyl-2-isobutyl-4-methylpentanenitrile Impurities CS-O-42703 Not Available Enquire
4,5-Dehydro Pregabalin Formate Impurities CS-O-58092 Not Available Enquire
5,6-Dehydro Pregabalin Impurities CS-O-14985 1141362-94-8 Enquire
5-Chloro Pregabalin impurity Impurities CS-O-48846 Not Available Enquire
ethyl (1R,5S)-2-oxo-3-oxabicyclo[3.1.0]hexane-1-carboxylate Impurities CS-O-39915 184838-77-5 Enquire
ethyl 2-hydroxy-4-methylpentanoate Impurities CS-DE-01503 10348-47-7 Enquire
Isobutylglutarmonoamide (rac-Pregabalin amide impurity) Impurities CS-O-32267 181289-15-6 In Stock
Isovaleraldehyde cyanohydrin Impurities CS-T-94514 54129-53-2 Enquire
Lactose Conjugates Impurity 2 Impurities CS-EO-00639 466678-45-5 Enquire
methyl 3-(2-amino-2-oxoethyl)-5-methylhexanoate Impurities CS-O-44586 1824451-15-1 Enquire
Mixture of Lactose Conjugates Impurity 2 & Pregabalin Impuri... Impurities CS-O-36618 Not Available In Stock
Potassium (S)-3-cyano-5-methylhexanoate Impurities CS-O-42708 Not Available Enquire
Pregabalin Amide Impurities CS-O-45151 1568181-40-7 Enquire
Pregabalin Amide Ester Impurity Impurities CS-O-35643 Not Available Enquire
Pregabalin Amine Amide Impurity Impurities CS-EO-02010 1567946-71-7 In Stock
Pregabalin Amine Amide Impurity (tartrate salt) Impurities CS-EO-03785 1567946-71-7 (Freebase) Enquire
Pregabalin Carbamoyl Impurity Impurities CS-T-10225 181289-33-8 In Stock
Pregabalin conjugate PD0224377 Impurities CS-O-03620 501665-97-0 In Stock
Pregabalin Conjugate PD0224377,PD0310886,PD0310887 (Mixture ... Impurities CS-O-56609 Not Available Enquire
Pregabalin conjugate PD0224378 Impurities CS-T-84428 466678-44-4 In Stock
Pregabalin conjugate PD0224378 Impurities CS-O-03619 466678-44-4 In Stock
Pregabalin Conjugate PD0310806 Impurities CS-O-20055 Not Available In Stock
Pregabalin Conjugate PD0310886 And PD0310887 (Mixture of iso... Impurities CS-O-20054 Not Available In Stock
Pregabalin Cyano Impurity Impurities CS-T-51389 181289-16-7 Enquire
Pregabalin Diacid Impurity Impurities CS-T-29665 5702-99-8 Enquire
Pregabalin DIESTER IMPURITY Impurities CS-O-42701 Not Available Enquire
Pregabalin dimer impurity Impurities CS-O-35397 2361911-35-3 Enquire
Pregabalin DInitrile impurity Impurities CS-O-42705 Not Available Enquire
Pregabalin EP Impurity D Impurities CS-T-93316 4118-51-8 In Stock
Pregabalin Ethyl Ester Hydrochloride Impurities CS-O-44701 1909294-27-4 Enquire
Pregabalin Impurity 1 Impurities CS-O-14714 Not Available Enquire
Pregabalin Impurity 12 Impurities CS-EO-00660 466678-46-6 Enquire
Pregabalin Impurity 13 Impurities CS-EO-00661 466678-47-7 In Stock
Pregabalin Impurity 2 Impurities CS-O-14715 1928755-04-7 Enquire
Pregabalin Impurity 20 Impurities CS-O-39494 1464089-92-6 Enquire
Pregabalin Impurity 21 Impurities CS-O-37359 Not Available Enquire
Pregabalin Impurity 28 Impurities CS-P-08777 1026009-73-3 Enquire
Pregabalin Impurity 3 Impurities CS-O-14716 1928754-83-9 Enquire
Pregabalin Impurity 36 Impurities CS-EO-02216 1094517-69-7 Enquire
Pregabalin Impurity 36 DiHCl Impurities CS-P-08593 159029-27-3 (free base) Enquire
Pregabalin Impurity 4 Impurities CS-O-14717 1477840-24-6 In Stock
Pregabalin Impurity 41 Impurities CS-EO-02780 Not Available In Stock
Pregabalin Impurity 42 Impurities CS-O-39493 181289-21-4 Enquire
Pregabalin Impurity 48 Impurities CS-O-48906 29882-69-7 Enquire
Pregabalin Impurity 5 Impurities CS-O-14718 Not Available Enquire
Pregabalin Impurity 6 Impurities CS-O-14719 Not Available Enquire
Pregabalin Impurity 7 Impurities CS-O-14720 1094517-98-2 Enquire
Pregabalin Impurity 8 Impurities CS-O-14721 181289-23-6 In Stock
Pregabalin Impurity 9 Impurities CS-T-52703 185815-56-9 Enquire
Pregabalin Impurity B Impurities CS-O-13756 75143-89-4 In Stock
Pregabalin Impurity E Impurities CS-EO-00783 1239692-16-0 Enquire
Pregabalin Impurity Mixture of PD0312236 & PD0312237 Impurities CS-O-20053 Not Available In Stock
Pregabalin Lactam Impurities CS-M-45900 61312-87-6 In Stock
Pregabalin Lactose Aduct II Impurities CS-EO-01423 Not Available Enquire
Pregabalin lactose conjugate mixture Impurities CS-O-31180 72689-48-6 Enquire
Pregabalin Oxidative impurity 2 Impurities CS-O-35149 Not Available Enquire
Pregabalin Oxidative impurity 3 Impurities CS-O-35150 Not Available Enquire
Pregabalin Oxidative impurity 4 Impurities CS-O-35151 Not Available Enquire
Pregabalin Sec Amide Impurities CS-EO-00937 930585-94-7 Enquire
Pregabalin TRIESTER IMPURITY Impurities CS-O-42700 Not Available Enquire
Pregabalin Trimer impurity Impurities CS-O-35000 Not Available Enquire
PregabalinDIISOPROPYL IMPURITY Impurities CS-O-42699 Not Available Enquire
Rac 4,5-Dehydro Pregabalin Impurities CS-T-14978 216576-74-8 In Stock
rac 5,6-Dehydro Pregabalin Impurities CS-T-14980 1136478-30-2 Enquire
Rac-Pregabalin Amide dimer Impurities CS-T-103276 1486961-58-3 Enquire
rac-Pregabalin Methyl Ester Hydrochloride Impurities CS-O-48875 1955557-35-3 In Stock
rac-Pregabalin N-Acrylamide Impurities CS-T-84110 1495844-28-4 Enquire
R-Pregabalin Amide Lactose Adduct Impurities CS-EO-03215 501665-88-9 Enquire
tert-butyl 2-(4-isobutyl-2-oxopyrrolidin-1-yl)acetate Impurities CS-O-45814 Not Available Enquire
Urea impurity of pregabalin Impurities CS-O-42710 Not Available Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Pregabalin (Y0001805) EP Standards CS-EG-02363 148553-50-8 In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-N-tert-Butoxycarbonyl Pregabalin Methyl Ester Intermediates CS-T-09279 1246816-46-5 Enquire
2-Carboxy Ethyl 3 Cyano-5 Methyl Hexanoicacid Ethyl Ester Intermediates CS-O-14923 186038-82-4 In Stock


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-N-Tert-Butoxycarbonyl Pregabalin Building Blocks CS-TA-83908 649748-09-4 Enquire