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857288-56-3

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857288-56-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 857288-56-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,7,2,8 and 8 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 857288-56:
(8*8)+(7*5)+(6*7)+(5*2)+(4*8)+(3*8)+(2*5)+(1*6)=223
223 % 10 = 3
So 857288-56-3 is a valid CAS Registry Number.

857288-56-3Relevant articles and documents

METHOD OF OBTAINING 3,3-DIPHENYLPROPYLAMINES

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Page/Page column 10, (2008/12/05)

The invention relates to a method of obtaining 3,3-diphenylpropylamines (I), wherein R1 is H, alkyl, haloalkyl or alkoxyalkyl, R2 is alkyl, alkoxy, halogen, NO2, CN, CHO, which may be free or protected, CH2OH or COOR6, and R3 and R4 are selected independently from H and alkyl or together with the nitrogen to which they are bound form a ring having 3 to 7 members. The inventive method consists in reacting a propylenephenylamine and a disubstituted aromatic hydrocarbon and, if necessary, separating the desired enantiomer or the mixture of enantiomers, and/or converting the compound (I) into a salt. Compounds (I) are muscarinic receptor antagonists which can be used in the treatment of urinary incontinence and other symptoms of urinary bladder hyperactivity. Said compounds include tolterodine.

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