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109250-67-1

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109250-67-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109250-67-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,2,5 and 0 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109250-67:
(8*1)+(7*0)+(6*9)+(5*2)+(4*5)+(3*0)+(2*6)+(1*7)=111
111 % 10 = 1
So 109250-67-1 is a valid CAS Registry Number.

109250-67-1Relevant articles and documents

ARYL DI-SUBSTITUTED PROPENONE COMPOUNDS

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Page/Page column 18-19, (2010/06/15)

Compounds of formula (I): wherein R1 and R4 are OR7, R2 and R3 are H or OR7, with the proviso that when R2 is OR7 then R3 is H, and when R3 is OR7 then Rsu

Sterically Hindered 1,4-Methylenebenzoquinones in the Synthesis of Six-Membered N-, O-, S-, and Se-Heterocycles

Komissarov, V. N.,Ukhin, L. Yu.,Vetoshkina, L. V.,Dupin, A. M.,Erin, A. N.

, p. 700 - 706 (2007/10/03)

In the presence of acids or bases or on heating 2,6-di-tert-butyl-4-(4,5-dimethoxy-2-phenacylbenzylidene)-2,5-cyclohexadien-1-ones are converted into isochromenes; treatment with hydroxylamine yields isoquinoline derivatives possessing high antioxidant activity.Reactions of these methylenebenzoquinones with elemental sulfur and selenium result in formation of 1,2-dihydro-2-thia(selena)naphthalene 2-oxides.

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