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75478-73-8

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75478-73-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75478-73-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,4,7 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 75478-73:
(7*7)+(6*5)+(5*4)+(4*7)+(3*8)+(2*7)+(1*3)=168
168 % 10 = 8
So 75478-73-8 is a valid CAS Registry Number.

75478-73-8Downstream Products

75478-73-8Relevant articles and documents

ADDITION CONJUGUEE DE DERIVES LITHIES DE DITHIANE-1,3 AUX ALDEHYDES αβ ETHYLENIQUES

Wartski, L.,Bouz, M. El

, p. 3285 - 3289 (1982)

In order to synthesize γ carbonyl aldehydes which are interesting precursors in organic synthesis, we examine the action of masked acylanions, the lithiated derivatives from 1,3-dithiane 1a and 2-phenyl-1,3-dithiane on selected unsaturated aldehydes: crotonaldehyde 2, cinnamaldehyde 3, 3-methyl butenal 4 and methacrolein 5.In THF 1a leads with the four aldehydes to allylic alcohols.However 1b gives products resulting from C=C and C=O additions.Using THF-HMPA, we show that C=C addition is generally enhanced.Furthermore, in all cases examined C=C and C=O addition take place under kinetic controll: the regioselectivity observed can be interpreted by repulsive interactions due to the substrate and the reagent structure as well as lithium-carbonyl compound interactions.

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