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2-(Pent-4-enylcarboxy)benzoylmalonsaeure-tert-butylmethylester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

190185-22-9

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190185-22-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 190185-22-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,0,1,8 and 5 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 190185-22:
(8*1)+(7*9)+(6*0)+(5*1)+(4*8)+(3*5)+(2*2)+(1*2)=129
129 % 10 = 9
So 190185-22-9 is a valid CAS Registry Number.

190185-22-9Relevant academic research and scientific papers

Pyryliumolates. III. Synthesis of Annulated Benzotropolones

Plueg, Carsten,Friedrichsen, Willy,Debaerdemaeker, Tony

, p. 205 - 216 (2007/10/03)

Dirhodiumtetraacetate catalyzed nitrogen extrusion from diazocarbonyl compounds (2a-f, 19c, 23d-f, 25b) yields benzopyryliumolates (3), which were trapped intramolecularly in situ to give tetracyclic adducts (4a, 5a-d, 20, 24a-c, 26). Starting with 5a and 5d annulated benzotropolones (12a, d) are accessible.

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