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947313-99-7

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947313-99-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 947313-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,7,3,1 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 947313-99:
(8*9)+(7*4)+(6*7)+(5*3)+(4*1)+(3*3)+(2*9)+(1*9)=197
197 % 10 = 7
So 947313-99-7 is a valid CAS Registry Number.

947313-99-7Downstream Products

947313-99-7Relevant articles and documents

Process for making intermediates for fragrance components from α-campholenic aldehyde

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Page/Page column 6-7, (2008/06/13)

A two-step aldol condensation process is disclosed. α-Campholenic aldehyde (ACA) and methyl ethyl ketone (MEK) react in the presence of a base under conditions effective to produce a mixture comprising a high yield of ketol condensation products. Dehydration of the ketols in the presence of an organic sulfonic acid provides unsaturated ketones that are valuable intermediates for fragrance components for synthetic sandalwood products. Compared with the usual one-step, base-catalyzed approach, the two-step process increases the yield of all condensation products and maximizes production of the most valuable ketone isomers.

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