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

Loratadine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-Hydroxy Desloratadine-d4 Stable Isotopes CS-TB-66983 1246819-99-7 In Stock
5-Hydroxy Desloratadine-d4 Stable Isotopes CS-T-103265 117811-12-8 (Unlabelled) Enquire
6-Hydroxy Desloratadine-d4 Stable Isotopes CS-T-103266 119410-05-8 (Unlabelled) Enquire
Desloratadine Citric Amide-d4 Stable Isotopes CS-T-96818 2714410-87-2 Enquire
Desloratadine-d4 Stable Isotopes CS-O-10056 381727-29-3 In Stock
Desloratadine-d4 (piperidinylidene-3,3,5,5-d4) Stable Isotopes CS-C-01294 2713301-38-1 Enquire
Desloratadine-d4 N-Carboxylic Acid Methyl Ester Stable Isotopes CS-T-100521 2732861-63-9 Enquire
Desloratadine-d5 Hydrochloride Stable Isotopes CS-T-100520 Not Available Enquire
Loratadine-d4 (piperidinylidene-3,3,5,5-d4) Stable Isotopes CS-C-00782 79794-75-5(Unlabelled) Enquire
Loratadine-d4 Epoxide N-Oxide Stable Isotopes CS-T-102892 1794754-14-5 Enquire
Loratadine-d5 (2,3,4,5,5-d5) Stable Isotopes CS-T-102349 1020719-57-6 In Stock
N-Formyl Desloratadine-d4 Stable Isotopes CS-T-100283 2733538-51-5 Enquire
N-Methyl Desloratadine-d5 Stable Isotopes CS-T-100025 Not Available Enquire
N-Nitroso Desloratadine-d4 Stable Isotopes CS-T-93987 2733579-31-0 In Stock


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Desloratadine Hemisulfate API CS-ED-41814 731812-06-9 In Stock
Loratadine API CS-O-01778 79794-75-5 In Stock
Ethyl Isonipecotate API CS-T-75354 1126-09-6 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Hydroxymethyl Loratadine Metabolite CS-O-07891 609806-39-5 In Stock
4-Hydroxymethyl Loratadine Metabolite CS-O-06123 609806-40-8 In Stock
4-Hydroxymethyl Loratadine Hydrochloride Metabolite CS-T-93627 Not Available In Stock
Loratadine N-Oxide Metabolite CS-O-05927 165739-62-8 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
11-Hydroxy-N-methyl Dihydro Loratadine Impurity CS-T-55961 38089-93-9 In Stock
3-Hydroxy Loratadine Impurity CS-T-56118 183483-15-0 Enquire
5'-[(Desloratadine)methyl] Rupatadine Impurity CS-T-52178 1224515-72-3 In Stock
8-Deschloro-8-bromo Desloratadine Impurity CS-O-16658 117796-50-6 Enquire
Dehydro Loratadine Isomer A Impurity CS-EO-02258 2470226-18-5 Enquire
Deschloro Loratadine Impurity CS-T-88876 79779-58-1 In Stock
Deschlorodesloratadine Hydrochloride Impurity CS-O-32471 Not Available In Stock
Desloratadine 11-Hydroxy N-Methyl Impurity Impurity CS-EO-03475 38089-93-9 (Freebase) In Stock
Desloratadine 11-Hydroxy-N-Methyl Impurity(Mixture of isomer... Impurity CS-O-07773 38089-93-9 Enquire
Desloratadine Dehydro 11-Hydroxy N-Methyl Impurity Impurity CS-O-57149 117811-17-3 In Stock
Desloratadine Dehydro 11-Oxo Impurity Impurity CS-EO-00141 117811-16-2 In Stock
Desloratadine Dehydro N-Methyl Impurity Impurity CS-EO-03476 117811-18-4 (Freebase) Enquire
Desloratadine EP Impurity B Impurity CS-O-07779 183198-49-4 In Stock
Desloratadine Methanone Hydrochloride Impurity Impurity CS-O-54167 119770-60-4 In Stock
Desloratadine N-Acetyl Impurity Impurity CS-O-07781 117796-52-8 In Stock
Desloratadine N-Carboxylic Acid Methyl Ester Impurity CS-T-52179 165740-03-4 In Stock
Desloratadine N-Formyl Impurity Impurity CS-O-07782 117810-61-4 In Stock
Desloratadine N-Oxide Impurity CS-T-52177 169253-26-3 In Stock
Desloratadine Related Compound B Impurity CS-O-49209 432543-89-0 Enquire
Iso Desloratadine Impurity CS-T-56802 183198-49-4 In Stock
Loratadine Cyano Impurity Impurity CS-O-32400 31255-57-9 In Stock
Loratadine EP Impurity A Impurity CS-CB-00047 133284-74-9 In Stock
Loratadine EP Impurity B Impurity CS-T-50635 31251-41-9 In Stock
Loratadine EP Impurity E Impurity CS-O-03616 170727-59-0 In Stock
Loratadine EP Impurity E HCl Salt Impurity CS-EO-03662 170727-59-0 (Freebase) Enquire
Loratadine EP Impurity F Impurity CS-O-14709 125743-80-8 In Stock
Loratadine EP Impurity G Impurity CS-O-07784 38092-89-6 In Stock
Loratadine Impurity 6 Impurity CS-P-08433 2183453-63-4 Enquire
Loratadine Impurity 9 Impurity CS-EO-02742 1449295-46-8 Enquire
Loratadine Impurity E Impurity CS-T-52591 133330-60-6 Enquire
12-Hydroxy Loratadine Impurity CS-P-08432 Not Available Enquire
2-(2-oxopyrrolidin-1-yl)butanoic anhydride Impurity CS-O-36554 Not Available Enquire
2-Formyl Loratadine Impurity CS-T-55044 1076198-15-6 Enquire
4-Formyl Loratadine Impurity CS-T-55045 1076198-16-7 Enquire
8-Dechloro-10-chloro Desloratadine Impurity CS-T-73941 1346600-61-0 Enquire
8-Dechloro-7-chloro Desloratadine Impurity CS-T-73730 1346601-53-3 Enquire
8-Dechloro-9-chloro Desloratadine Impurity CS-T-51687 117811-13-9 Enquire
Dehydro Desloratadine Impurity CS-T-50913 117811-20-8 Enquire
Desloratadine 8-Bromo-11-Oxo Impurity Impurity CS-O-07776 143540-56-1 Enquire
Desloratadine Citric Amide Impurity CS-T-73339 1797131-43-1 Enquire
Desloratadine Epoxide Impurity CS-T-73103 1346604-23-6 Enquire
Desloratadine N-Hydroxy Impurity Impurity CS-O-07783 1193725-73-3 Enquire
Ethyl 2-(2-oxopyrrolidin-1-yl) butanoyl carbonate Impurity CS-O-36553 Not Available Enquire
Loratadine Impurity 15 Impurity CS-O-37177 125743-81-9 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
5,6-Dehydro-N-methyl Desloratadine Intermediate CS-T-51737 117811-18-4 In Stock
Boc-Desloratadine Intermediate CS-Y-00096 1309283-27-9 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
6-Hydroxy Desloratadine β-D-Glucuronide Glucuronide CS-O-49082 956126-16-2 Enquire
Loratadine glucose adduct 1 Glucuronide CS-O-58221 ---- Enquire
Loratadine glucose adduct 2 Glucuronide CS-O-58222 ---- Enquire
3-Hydroxy Desloratadine-β-D-Glucuronide Glucuronide CS-T-55936 774538-89-5 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Iso Loratadine A Fine Chemicals CS-EO-00026 169253-13-8 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso Desloratadine Nitrosamine CS-T-59617 1246819-22-6 In Stock


Analytical Standard

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso Desloratadine Analytical Standard CS-T-59617-10MG 1246819-22-6 Enquire
N-nitroso-desloratadine-100 PPM in Acetonitrile Analytical Standard CS-T-59617-1.5ML 1246819-22-6 Enquire


Therapeutic

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Chloro Loratadine Therapeutic CS-T-50704 165739-83-3 Enquire
Desloratadine Therapeutic CS-O-00556 100643-71-8 In Stock
Desloratadine EP Impurity A Therapeutic CS-O-07778 298220-99-2 In Stock
Loratadine-d4 Therapeutic CS-O-31235 381727-27-1 In Stock