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866959-42-4

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866959-42-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 866959-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,6,6,9,5 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 866959-42:
(8*8)+(7*6)+(6*6)+(5*9)+(4*5)+(3*9)+(2*4)+(1*2)=244
244 % 10 = 4
So 866959-42-4 is a valid CAS Registry Number.

866959-42-4Upstream product

866959-42-4Relevant articles and documents

Process for preparing pyridazinone compounds

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Page/Page column 9, (2008/06/13)

The present invention provides a process for the preparation 6-[3-(hetero)aryloxy-2-fluoro-benzyl]-2H-pyridazin-3-one compounds 1 where R2 is an optionally substituted aryl or an optionally substituted heteroaryl, R6 is NO2, NH2, alkyl, halogen, or a function group readily derived therefrom and R4c is hydrogen or alkyl. There also is provided a process for the preparation of phenylacetic acid compounds 2, wherein R2 and R6 are as defined previously and R5a is hydrogen or alkyl, which are useful for the preparation of pyridazinone compounds.

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