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

Atropine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
a-Hydroxymethyl Atropine-d5 Stable Isotopes CS-T-101291 Not Available Enquire
Apoatropine-d5 Stable Isotopes CS-T-101897 Not Available Enquire
Atropine-D3 Hydrochloride Stable Isotopes CS-O-46961 33952-38-4(Unlabelled) Enquire
Benzatropine-d3 Stable Isotopes CS-O-56898 202529-15-5 Enquire
N-Isopropyl Noratropine-d7 Stable Isotopes CS-T-101210 Not Available Enquire
rac Homatropine Hydrobromide-d3 Stable Isotopes CS-T-101049 Not Available Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(±)-tropate 1αH,5αH-Tropan-3α-ol sulfate hemihydrate API Standards CS-T-48420 5908-99-6 In Stock
Apoatropine API Standards CS-O-32843 500-55-0 In Stock
Atropine API Standards CS-O-03855 51-55-8 Enquire
Atropine Sulphate API Standards CS-O-00828 55-48-1 In Stock
Benzatropine API Standards CS-L-00034 86-13-5 Enquire
Homatropine Hydrobromide API Standards CS-O-01626 51-56-9 In Stock
Homatropine Methylbromide API Standards CS-O-01614 80-49-9 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-hydroxy-phenyl Atropine Metabolites CS-O-56232 Not Available Enquire
3-hydroxy-phenyl Atropine Metabolites CS-O-56233 Not Available Enquire
4'-Hydroxyatropine Metabolites CS-O-47982 21642-86-4 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
α-Hydroxymethyl Atropine Impurities CS-T-56153 2515-36-8 Enquire
(R)-(-)-Littorine Hydrochloride Impurities CS-EK-00401 21956-47-8 (Free base) In Stock
Atropine EP Impurity B Impurities CS-EO-00503 16839-98-8 In Stock
Atropine EP Impurity E Impurities CS-O-15086 949092-65-3 In Stock
Atropine EP Impurity G Impurities CS-EO-00504 21956-47-8 In Stock
Atropine Impurity 17 Impurities CS-O-55584 17488-50-5 Enquire
Atropine Impurity 30 Impurities CS-O-59971 78215-11-9 Enquire
Atropine N-Oxide Hydrochloride Impurities CS-K-00214 4574-60-1 In Stock
Benzatropine n-oxide Impurities CS-O-56897 Not Available Enquire
Dehydrohomatropine bromide Impurities CS-O-43325 Not Available Enquire
Homatropine Impurities CS-O-59466 87-00-3 Enquire
N-Nitroso Atropine EP Impurity B Impurities CS-EO-02299 55855-45-3 In Stock
Scopolamine Hydrobromide Trihydrate Impurities CS-O-05974 6533-68-2 In Stock


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Atropine for peak identification (Y0000845) EP Standards CS-EG-00137 51-55-8 Enquire
Atropine impurity B (Y0000816) EP Standards CS-EG-00136 16839-98-8 Enquire
Atropine sulfate (A1400000) EP Standards CS-EG-00138 5908-99-6 Enquire
Methylatropine Bromide EP Standards CS-EG-00593 Not Available Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Methylatropine Bromide Intermediates CS-T-82358 2870-71-5 Enquire
Noratropine Hydrochloride Intermediates CS-T-59694 75559-01-2 Enquire