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1011525-96-4

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1011525-96-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1011525-96-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,1,5,2 and 5 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1011525-96:
(9*1)+(8*0)+(7*1)+(6*1)+(5*5)+(4*2)+(3*5)+(2*9)+(1*6)=94
94 % 10 = 4
So 1011525-96-4 is a valid CAS Registry Number.

1011525-96-4Downstream Products

1011525-96-4Relevant articles and documents

A PROCESS FOR SYNTHESIS OF [6,7-BIS-(2-METHOXYETHOXY)-QUINAZOLIN-4- YL]-(3-ETHYNYLPHENYL)AMINE HYDROCHLORIDE

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Page/Page column 11, (2008/06/13)

A process for synthesizing [6,7-bis(2-methoxyethoxy)quinazolin-4-yl]-(3-ethynylphenyl)amine hydrochloride (Erlitinib Hydrochloride) having the formula (I) comprising reacting 3,4-dihydroxy benzaldehyde with bromo derivative of ethyl methyl ether to obtain 3,4-bis(2-methoxyethoxy)benzaldehyde having formula (III). This is converted to give 3,4- bis (2-methoxyethoxy)-benzonitrile. On further nitration we obtain 4,5- bis (2-methoxyethoxy)-2-nitrobenzonitrile which on nitro reduction we get 2-amino-4,5-bis(2-methoxyethoxy)benzonitrile and reacting this with N'-(3-ethynylphenyl)-N,N-dimethyl formamidine gives erlotinib free base. On further treatment of this free base with methanolic/ethanolic hydrochloric acid gives us erlotinib hydrochloride.

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