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

Letrozole Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Letrozole-d4 Stable Isotopes CS-O-06716 1133712-96-5 In Stock


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Letrozole API CS-O-01788 112809-51-5 In Stock


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Letrozole Metabolite Metabolite CS-O-07880 Not Available In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Letrozole Diamide Impurity CS-O-35989 2170106-13-3 In Stock
Letrozole EP Impurity C Impurity CS-O-32022 112809-25-3 In Stock
Letrozole Monoacid Impurity Impurity CS-EO-01994 Not Available Enquire
Letrozole Mono-Amide Impurity Impurity CS-T-94198 2500927-47-7 Enquire
Letrozole Related Compound A Impurity CS-O-11054 112809-52-6 In Stock
Letrozole Bromo Impurity Impurity CS-O-13690 143030-54-0 Enquire
Letrozole N-Oxide Impurity CS-SN-00167 ---- Enquire
Letrozole N-Oxide 1 Impurity CS-O-39253 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Bis(4-cyanophenyl)methanol Intermediate CS-T-49262 134521-16-7 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4,4',4''-Methanetriyltribenzonitrile Fine Chemicals CS-T-58281 113402-31-6 In Stock
4-Fluorobenzonitrile Fine Chemicals CS-T-23895 1194-02-1 In Stock
1,5-dihydro-4H-1,2,4-triazol-4-amine Fine Chemicals CS-O-37483 124213-98-5 Enquire
4-[(4-amino-4,5-dihydro-1H-1,2,4-triazol-1-yl)methyl]benzoni... Fine Chemicals CS-O-37484 748812-17-1 Enquire
4-Chloromethylbenzonitrile Fine Chemicals CS-H-00064 874-86-2 Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Letrozole Secondary Standards CS-SS-24515-1GM 112809-51-5 Enquire


Pharmaceutical Stds.

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Letrozole Diacid Impurity Pharmaceutical Stds. CS-TB-79998 1644566-39-1 In Stock