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116986-77-7

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116986-77-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116986-77-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,9,8 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 116986-77:
(8*1)+(7*1)+(6*6)+(5*9)+(4*8)+(3*6)+(2*7)+(1*7)=167
167 % 10 = 7
So 116986-77-7 is a valid CAS Registry Number.

116986-77-7Downstream Products

116986-77-7Relevant articles and documents

Diisophorone and Related Compounds. Part 18 Ring Contraction in Diisophorone by the Favorski Reaction

Kurzer, Frederick,,Patel, Jayantilal N.

, p. 1363 - 1382 (2007/10/02)

The action of strong alkalis or alkoxides on 4,8-dibromo-1-carboxydiisophor-2(7)-en-3-one produces 1,3-dicarboxyneodiisophora-2,7-diene (or its esters) by a ring-contraction of the Favorski-type; the products are derivatives of tricyclo2,6>dodecane.Hydriodic acid converts the dienedioic acid by partial saturation of the conjugated 2,7-diene system into the 2(7)-mono-olefine dioic acid; the carboxyl groups of both series of compounds undergo esterification, anhydride formation and reduction in the normal manner.The 13C nmr spectra of the novel ring-contracted compounds are interpreted, chiefly by reference to those of their diisophorone-precursors, as are their fragmentation patterns under electron impact. - Keywords: Diisophorone, Favorski ring contraction thereof; "Neodiisophorones"; Tricyclo2,6>dodecanes; 4,8-Methano-1H-cyclopentacyclooctenes

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