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1219090-54-6

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1219090-54-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1219090-54-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,0,9 and 0 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1219090-54:
(9*1)+(8*2)+(7*1)+(6*9)+(5*0)+(4*9)+(3*0)+(2*5)+(1*4)=136
136 % 10 = 6
So 1219090-54-6 is a valid CAS Registry Number.

1219090-54-6Upstream product

1219090-54-6Relevant articles and documents

A convergent general strategy for the functionalized 2-Aryl cycloalkylfused chromans: Intramolecular hetero-diels-alder reactions of ortho-quinone methides

Tummatorn, Jumreang,Ruchirawat, Somsak,Ploypradith, Poonsakdi

supporting information; experimental part, p. 1445 - 1448 (2010/06/17)

(Figure Presented) Five and six: 3, 4-Cyclopentyl- and cyclohexyl-fused 2-arylchromans could be readily prepared from the intramolecular hetero-Diels-Alder reactions of the corresponding ortho-quinone methide (o-QM) precursors tethered to the styrenes under mild reaction conditions. The products were obtained with good to excellent diastereoselectivity (up to > 99:1 dr; see scheme; MOM = methoxymethyl).

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