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

Erlotinib Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
[13C6]-O-Didesmethylerlotinib hydrochloride Stable Isotopes CS-EK-01163 1261395-30-5 Enquire
Erlotinib D4 Stable Isotopes CS-EO-02363 1130852-41-3 Enquire
Erlotinib D6 Hydrochloride Stable Isotopes CS-O-11856 1189953-78-3 Enquire
Erlotinib D8 Stable Isotopes CS-O-32666 1266534-68-2 Enquire
Erlotinib-13C6 Hydrochloride Stable Isotopes CS-O-00724 1210610-07-3 In Stock
Erlotinib-d6 Stable Isotopes CS-O-03064 1034651-23-4 In Stock
N-(2-Methoxyethyl) Erlotinib-d3 Stable Isotopes CS-T-100064 Not Available Enquire
O-Desmethylerlotinib hydrochloride 13C6 Stable Isotopes CS-EK-01115 183320-51-6 unlabeled Enquire
O-Desmethylerlotinib-d4 Stable Isotopes CS-B-00276 Not Available Enquire
OSI-420-d4, Free Base (Desmethyl Erlotiniβ-d4) Stable Isotopes CS-T-59970 1216420-11-9 Enquire
Tetrahydro Erlotinib-d9 Stable Isotopes CS-T-99799 Not Available Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Erlotinib API Standards CS-O-31362 183321-74-6 In Stock
Erlotinib Hydrochloride API Standards CS-M-58440 183319-69-9 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Erlotinib 4-Hydroxy Metabolite HCl salt Metabolites CS-EO-03532 882420-22-6 (Freebase) Enquire
Erlotinib Carboxylic Acid Metabolites CS-O-11867 882420-21-5 Enquire
Erlotinib impurity G Metabolites CS-AQ-00200 2514264-76-5 In Stock
Erlotinib O-Desmethyl Metabolite Isomer (M14) Hydrochloride Metabolites CS-P-07852 183320-51-6 In Stock
Hydroxy Erlotinib Metabolites CS-O-11868 882420-22-6 Enquire
O-Desmethyl Erlotinib Metabolites CS-O-11869 183321-86-0 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
"Erlotinib impurity, 6,7-bis(2-chloroethoxy)" Impurities CS-P-07853 183321-82-6 Enquire
3-Aminophenylacetylene Impurities CS-O-30852 54060-30-9 In Stock
4-(3-((6,7-bis(2-methoxyethoxy)quinazolin-4-yl)amino)phenyl)... Impurities CS-O-37085 Not Available Enquire
6,6',7,7'-tetrakis(2-methoxyethoxy)-4H-[3,4'-biquinazolin]-4... Impurities CS-O-37086 Not Available Enquire
6,7-bis(2-methoxyethoxy)-N-(3-vinylphenyl)quinazolin-4-amine Impurities CS-O-37084 1058132-82-3 Enquire
6-O-Desmethoxyethyl-6-O-chloroethyl Erlotinib Hydrochloride Impurities CS-T-52184 183320-04-9 Enquire
7-(2’-Desmethyl) Erlotinib Impurities CS-T-89073 183365-34-6 Enquire
7-O-Desmethoxy-7-O-chloroethyl Erlotinib Hydrochloride Impurities CS-T-52185 183320-19-6 Enquire
Desethynyl Erlotinib Impurities CS-T-73717 1145671-52-8 In Stock
Desmethyl Erlotinib Acetate Impurities CS-T-16312 183320-15-2 Enquire
Desmethyl Erlotinib Carboxylate Acid Impurities CS-T-52272 882172-60-3 Enquire
Didesmethyl Erlotinib Hydrochloride Impurities CS-T-52743 183320-12-9 Enquire
Erlotinib Aldehyde Impurities CS-O-33313 1278586-80-3 Enquire
Erlotinib Amine Impurity Impurities CS-ED-41702 1417161-98-8(free base) Enquire
Erlotinib impurity 1 Impurities CS-EO-00069 1710372-46-5 Enquire
Erlotinib Impurity 10 Impurities CS-P-07858 950596-58-4 Enquire
Erlotinib Impurity 11 Impurities CS-P-07859 950596-59-5 Enquire
Erlotinib Impurity 13 Impurities CS-P-07860 236750-65-5 Enquire
Erlotinib Impurity 14 Impurities CS-P-07861 236750-62-2 Enquire
Erlotinib Impurity 17 Impurities CS-P-07862 183322-16-9 In Stock
Erlotinib Impurity 18 Hydrochloride Impurities CS-P-07863 299912-61-1 (free base) Enquire
Erlotinib Impurity 19 Impurities CS-P-07864 1312937-41-9 In Stock
Erlotinib Impurity 24 Impurities CS-O-32530 938185-06-9 In Stock
Erlotinib Impurity 35 HCl salt Impurities CS-EO-03534 1354727-63-1 (Freebase) Enquire
Erlotinib Impurity 6 Impurities CS-P-07857 179688-26-7 Enquire
Erlotinib Impurity A Impurities CS-AQ-00190 13794-72-4 In Stock
Erlotinib Impurity F Impurities CS-P-07856 1624294-38-7 Enquire
Erlotinib impurity I Impurities CS-AQ-00201 183320-29-8 Enquire
Erlotinib impurity K Impurities CS-AQ-00203 1225350-79-7 Enquire
Erlotinib impurity L Impurities CS-AQ-00204 Not Available Enquire
Erlotinib impurity, 6-(2-chloroethoxy)-7-(2-methoxyethoxy) Impurities CS-P-07855 183321-83-7 Enquire
Erlotinib impurity, 6-(2-methoxyethoxy)-7-(2-chloroethoxy) Impurities CS-P-07854 183321-85-9 Enquire
Erlotinib Related Compound A Impurities CS-O-46248 299912-59-7 In Stock
Erlotinib Related Compound A (Base) Impurities CS-P-08699 299912-60-0 Enquire
Erlotinib USP Related Compound A Impurities CS-EO-03535 299912-60-0 (Freebase) Enquire
Erlotinib-N-Oxide Impurities CS-O-16945 Not Available Enquire
N-(2-Methoxyethyl) Erlotinib Impurities CS-T-95872 Not Available In Stock
N-(3-bromophenyl)-6,7-bis(2-methoxyethoxy)-4-quinazolinamine... Impurities CS-T-94107 2055840-41-8 Enquire
N-(3-Desethynylphenyl)-N-(3-(1-chlorovinyl)phenyl) Erlotinib Impurities CS-O-33361 2204518-92-1 Enquire
Tetrahydro Erlotinib Impurities CS-T-86281 299912-61-1 In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
6,7-bis-(2-Methoxyethoxy)-quinazolin-4(3h)-one Intermediates CS-O-31512 179688-29-0 In Stock
N-(3-Desethynylphenyl)-N-(3-bromophenyl) Erlotinib Intermediates CS-T-16104 328528-74-1 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-Bromonitrobenzene Fine Chemicals CS-T-08702 585-79-5 In Stock
4-Chloro-6,7-Bis-(2-methoxyethoxy)-4(3H)-quinazoline Fine Chemicals CS-O-31360 183322-18-1 In Stock