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

Amoxicillin Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxyphenylglycine-d4 Stable Isotopes CS-O-11071 122-87-2(Unlabeled) In Stock
Amoxicillin-13C2,15N (Mixture of Diastereomers) Stable Isotopes CS-T-96332 1357002-99-3 Enquire
Amoxicillin-d4 Stable Isotopes CS-O-02742 26787-78-0 (Unlabeled) In Stock
APA Amoxicillin Amide-d4 Stable Isotopes CS-T-97803 Not Available Enquire
L-Amoxicillin-d4 Stable Isotopes CS-T-96333 Not Available Enquire
N-(Methyl But-2-enoyl) Amoxicillin D4 Stable Isotopes CS-T-97428 60781-73-9 (Unlabelled) Enquire
N-(Penicillan-6-yl) Open Ring Amoxicillinamide-d4 Stable Isotopes CS-T-96300 Not Available Enquire
p-Hydroxy-(D)-phenylglycyl Amoxicillin-d4 Stable Isotopes CS-T-97415 188112-75-6 Enquire
Amoxicillin 13C6 Stable Isotopes CS-EK-00764 26787-78-0 unlabeled Enquire
Amoxicillin-13C6 Stable Isotopes CS-T-95649 Not Available In Stock


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Amoxicillin API CS-O-03789 26787-78-0 In Stock
Amoxicillin Sodium IP (Sterile) API CS-O-00940 34642-77-8 In Stock
Amoxicillin Sulfate API CS-O-48375 Not Available Enquire
Amoxicillin Trihydrate API CS-O-11598 61336-70-7 In Stock
Amoxicillin trihydrate: potassium clavulanate (4:1) API CS-BX-01121 Not Available Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Amoxicillin impurity D ammonium salt Metabolite CS-O-42147 1204829-51-5 Enquire
Amoxicillin M1 Metabolite Metabolite CS-O-39958 Not Available Enquire
Amoxicillin M2 Metabolite Metabolite CS-O-39959 Not Available Enquire
Amoxicillin M3 Metabolite Metabolite CS-O-39960 Not Available Enquire
Amoxicillin M4 Metabolite Metabolite CS-O-39961 Not Available Enquire
Amoxicillin M5 Metabolite Metabolite CS-O-39962 Not Available Enquire
Amoxicillin M6 Metabolite Metabolite CS-O-39963 Not Available Enquire
Amoxicillin M7 Metabolite Metabolite CS-O-39964 Not Available Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(4S)-2-Hydroxy-2-methyl-4-thiazolidinecarboxylic Acid Impurity CS-O-43056 Not Available Enquire
Amoxicillin (2R)-Piperazine-2,5-dione Impurity CS-O-60208 210289-70-6 Enquire
Amoxicillin EP Impurity B Impurity CS-T-03676 26889-93-0 In Stock
Amoxicillin EP Impurity C Impurity CS-O-07189 2088961-37-7 In Stock
Amoxicillin EP Impurity D (Mixture of isomers) Impurity CS-ZH-38743 1642629-94-4 In Stock
Amoxicillin EP Impurity D Sodium [Mixture of Isomers] Impurity CS-O-07190 68728-47-2 In Stock
Amoxicillin EP Impurity E Impurity CS-O-07191 1356020-01-3 Enquire
Amoxicillin EP Impurity F Impurity CS-O-30483 126247-63-0 In Stock
Amoxicillin EP Impurity G Impurity CS-O-07193 188112-75-6 Enquire
Amoxicillin EP Impurity H Impurity CS-T-53649 205826-86-4 In Stock
Amoxicillin EP Impurity I Impurity CS-O-07195 22818-40-2 In Stock
Amoxicillin EP Impurity J Impurity CS-O-48849 73590-06-4 In Stock
Amoxicillin EP Impurity J Disodium Impurity CS-EO-00627 94730-53-7 In Stock
Amoxicillin EP Impurity J Sodium salt Impurity CS-T-48116 73590-06-4 (freebase) In Stock
Amoxicillin EP Impurity K Impurity CS-T-48117 210289-72-8 In Stock
Amoxicillin EP Impurity L Impurity CS-O-15344 1789703-32-7 In Stock
Amoxicillin EP Impurity O Impurity CS-O-33798 ---- In Stock
Amoxicillin Impurity M Impurity CS-O-51939 Not Available Enquire
Amoxicillin Related Compound C Impurity CS-EO-01487 94659-47-9 In Stock
Amoxicillin Related Compound D Impurity CS-BX-00670 1642559-71-4 In Stock
Amoxicillin Related Compound E Impurity CS-BX-01078 178738-48-2 Enquire
Amoxicillin Related Compound J Impurity CS-O-39616 2088960-43-2 Enquire
Amoxicillin Related Compound M Impurity CS-O-48775 2088961-40-2 Enquire
Amoxicillin Related Compound M Sodum salt Impurity CS-EO-00373 ---- Enquire
Amoxicilloic Acid Impurity CS-O-44343 57457-65-5 Enquire
Amoxycilloic Acid (Mixture of Diastereomers) Impurity CS-O-59468 57414-05-8 Enquire
2-acetamido-2-(4-hydroxyphenyl)acetic acid Impurity CS-O-44021 37784-25-1 Enquire
Amoxicillin Aldehyde Impurity CS-O-05790 26787-78-0(Unlabeled) Enquire
Amoxicillin Close ring Trimer Impurity CS-EO-00542 Not Available Enquire
Amoxicillin Dimer (Penicilloic acid form) Impurity CS-P-00619 Not Available Enquire
Amoxicillin double Side Chain Impurity Impurity CS-O-35879 Not Available Enquire
Amoxicillin EP Impurity H Impurity CS-O-07194 205826-86-4 Enquire
Amoxicillin EP Impurity K trisodium salt Impurity CS-O-36365 210289-72-8 (free base) Enquire
Amoxicillin EP Impurity P Impurity CS-O-33799 2088960-44-3 Enquire
Amoxicillin Impurity C (R Isomer) Impurity CS-O-41237 Not Available Enquire
Amoxicillin Open Ring Ethyl Impurity CS-O-35880 Not Available Enquire
Amoxicillin Open Ring Trimer Impurity Impurity CS-O-34994 Not Available Enquire
Amoxicillin Open RIng Trimer Impurity sodium salt Impurity CS-EO-00812 Not Available Enquire
Amoxicillin oxide Impurity CS-O-33800 Not Available Enquire
Amoxicillin Trihydrate - Impurity K Impurity CS-O-38048 2088961-38-8 Enquire
Amoxicillin Trimer Impurity CS-T-48115 174391-69-6 Enquire
Amoxicillin Trimer Trisodium Salt Impurity CS-T-62861 94703-34-1 Enquire
Amoxipenicilloic acid Impurity CS-MM-60167 42947-63-7 Enquire
Amoxycilloic Acid Trimer Impurity CS-T-66296 210289-73-9 Enquire
N-(4-Hydroxyphenyl)glycine Impurity CS-BX-00463 122-87-2 Enquire
N-(Hydroxyphenylglycyl) amoxicillin Sodium salt Impurity CS-O-14112 Not Available In Stock
N-Pivaloyl Amoxicillin Impurity CS-T-03710 1313237-94-3 Enquire
p-hydroxyphenylglycine methyl ester Impurity CS-EO-01277 26531-82-8 Enquire
rac-Amoxicillin EP Impurity H Impurity CS-P-07132 106644-43-3 Enquire
Sterile Clavulanate Potassium+Amoxicillin Impurity CS-O-15494 61177-45-5 & 26787-78-0 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Amoxicillin CBZ protected Intermediate Intermediate CS-O-49845 ---- In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Amoxicillin Related Compound A Fine Chemicals CS-O-07187 551-16-6 In Stock