Impurity-7

CAS No: 585-79-5
Chemical Name:
1-Bromo-3-nitrobenzene
Molecular Formula:
C6H4BrNO2

Methoxy impurity

CAS No: 1312937-41-9
Chemical Name:
4-Methoxy-6,7-bis(2-methoxyethoxy)quinazoline
Molecular Formula:
C15H20N2O5

Impurity-3

CAS No: 179688-26-7
Chemical Name:
Ethyl 4,5-bis(2-methoxyethoxy)-2-nitrobenzoate
Molecular Formula:
C15H21NO8

Impurity-4

CAS No: 183322-17-0 HCl Salt
Chemical Name:
ethyl 2-amino-4,5-bis(2-methoxyethoxy)benzoate
Molecular Formula:
C15H23NO6

Impurity-5

CAS No:  183322-16-9
Chemical Name:
ethyl 3,4-bis(2-methoxyethoxy)benzoate
Molecular Formula:
C15H22O6

Impurity-6

CAS No: : 3943-89-3
Chemical Name:
ethyl 3,4-dihydroxybenzoate
Molecular Formula:
C9H10O4

Ethyl impurity

CAS No:  2055841-66-0 HCl salt
Chemical Name:
N-(3-ethylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine
Molecular Formula:
C22H27N3O4

Amine impurity

CAS No:  1417161-98-8
Chemical Name:
6,7-bis(2-methoxyethoxy)quinazolin-4-amine
Molecular Formula:
C14H19N3O4

Bromo impurity

CAS No: 328528-74-1
Chemical Name:
N-(3-bromophenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine
Molecular Formula:
C20H22BrN3O4

N-Methoxyethyl Erlotinib

CAS No: NA
Chemical Name:
 6,7-Bis(2-methoxyethoxy)-N-phenylquinazolin-4-amine
Molecular Formula:
C25H29N3O5

Impurity-2

CAS No: 1145671-52-8
Chemical Name:
 6,7-Bis(2-methoxyethoxy)-N-phenylquinazolin-4-amine
Molecular Formula:
C20H23N3O4

EP-J

CAS No:  183321-83-7/183320-04-9
Chemical Name:
6-(2-chloroethoxy)-N-(3-ethynylphenyl)-7-(2-methoxyethoxy)quinazolin-4-amine
Molecular Formula:
C21H20ClN3O3

EP-K

CAS No:  2204518-92-1
Chemical Name:
N-(3-(1-chlorovinyl)phenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine
Molecular Formula:
C22H24ClN3O4

EP-L

CAS No: 183321-82-6/183320-00-5
Chemical Name:
6,7-bis(2-chloroethoxy)-N-(3-ethynylphenyl)quinazolin-4-amine
Molecular Formula:
C20H17Cl2N3O2

EP-M

CAS No: 183322-21-6
Chemical Name:
4-chloro-6,7-bis(2-chloroethoxy)quinazoline
Molecular Formula:
C12H11Cl3N2O2

Impurity-1

CAS No: NA
Chemical Name:
 4-Chloro-6,7-bis(2-methoxyethoxy)-4a,8a-dihydroquinazoline
Molecular Formula:
C14H17ClN2O4

EP-E

CAS No: 1058132-82-3//299912-61-1
Chemical Name:
6,7-bis(2-methoxyethoxy)-N-(3-vinylphenyl)quinazolin-4-amine
Molecular Formula:
C22H25N3O4

EP-F

CAS No: 1809951-10-7
Chemical Name:
6,6',7,7'-tetrakis(2-methoxyethoxy)-4H-[3,4'-biquinazolin]-4-one
Molecular Formula:
C28H34N4O9

EP-G

CAS No: 183322-19-2
Chemical Name:
4-chloro-6-(2-chloroethoxy)-7-(2-methoxyethoxy)quinazoline
Molecular Formula:
C13H14Cl2N2O3

EP-H

CAS No: 183320-19-6
Chemical Name:
7-(2-chloroethoxy)-N-(3-ethynylphenyl)-6-(2-methoxyethoxy)quinazolin-4-amine
Molecular Formula:
C21H20ClN3O3

EP-I

CAS No: 183322-20-5
Chemical Name:
4-chloro-7-(2-chloroethoxy)-6-(2-methoxyethoxy)quinazoline
Molecular Formula:
C13H14Cl2N2O3

Reference standared

CAS No: 183319-69-9
Chemical Name:
N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine hydrochloride
Molecular Formula:
C22H24ClN3O4

EP-A

CAS No:  179688-29-0
Chemical Name:
6,7-bis(2-methoxyethoxy)quinazolin-4(3H)-one
Molecular Formula:
C14H18N2O5

EP-B

CAS No:  54060-30-9
Chemical Name:
3-ethynylaniline
Molecular Formula:
C8H7N

EP-C

CAS No: 1354727-63-1 free base
Chemical Name:
1-(3-(6,7-bis(2-methoxyethoxy)quinazolin-4-ylamino)phenyl)ethanone hydrochloride
Molecular Formula:
C22H26ClN3O5

EP-D

CAS No: 183322-18-1
Chemical Name:
4-chloro-6,7-bis(2-methoxyethoxy)quinazoline
Molecular Formula:
C14H17ClN2O4

Reference standared

CAS No: 183319-69-9
Chemical Name:
N-(3-ethynylphenyl)-6,7-bis(2-methoxyethoxy)quinazolin-4-amine hydrochloride
Molecular Formula:
C22H24ClN3O4