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1198769-18-4

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1198769-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1198769-18-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,8,7,6 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1198769-18:
(9*1)+(8*1)+(7*9)+(6*8)+(5*7)+(4*6)+(3*9)+(2*1)+(1*8)=224
224 % 10 = 4
So 1198769-18-4 is a valid CAS Registry Number.

1198769-18-4Relevant articles and documents

PROCESS FOR THE SYNTHESIS OF ARFORMOTEROL

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, (2009/12/28)

The present invention provides a process for preparing a compound of formula (Vl) or a salt thereof, the process comprising: (i) reacting 4-methoxyphenyl acetone with an amine of formula (VIII) under conditions of reductive amination to produce a compound of formula (II) or a salt thereof, wherein there is no isolation of an imine intermediate formed during the reductive amination; (ii) condensing the compound (II) or the acid addition salt thereof with an α-haloketone of formula (III) to produce the compound of formula (IV); (iii) reducing the compound (IV) to a compound of formula (V); and (iv) reducing the compound (V) to the compound of formula (Vl), wherein the reduction is carried out in the presence of either (1 ) a hydrogen donating compound in the presence of a hydrogen transfer catalyst; or (2) ammonium formate using a hydrogenation catalyst, wherein: R1 and R2 are independently optionally substituted arylalkyl, and Hal is selected from chloro or bromo.

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