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140869-89-2

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140869-89-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140869-89-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,8,6 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 140869-89:
(8*1)+(7*4)+(6*0)+(5*8)+(4*6)+(3*9)+(2*8)+(1*9)=152
152 % 10 = 2
So 140869-89-2 is a valid CAS Registry Number.

140869-89-2Downstream Products

140869-89-2Relevant articles and documents

-Photocycloaddition of Cyclohexene to 2-Acetyl-5,5-dimethyl-1,3-cyclohexanedione and 3-Acetyl-1,5,5-trimethyl-2,4-pyrrolidinedione

Henning, Hans-Georg,Mazunaitis, Giedrius

, p. 93 - 98 (2007/10/02)

Irradiation of solutions of excess cyclohexene and 2-acetyl-5,5-dimethyl-1,3-cyclohexanedione (1) and 3-acetyl-1,5,5-trimethyl-2,4-pyrrolidinedione (4) results mainly in the formation of 1,5-diones 2 and 5.These originate from intermediate cycloadducts of cyclohexene and the exo-enols of the cyclic 1,3-diketones.The yields decrease with increasing polarity of the solvent.In solution 2 and 5 are in equilibrium with the cyclic hemiacetals 3 and 6.Keywords: -Photocycloaddition; 2-Acetyl-5,5-dimethyl-1,3-cyclohexanedione; 3-Acetyl-1,5,5-trimethyl-2,4-pyrrolidinedione; 2-(2'-Acetyl-cyclohexyl)-5,5-dimethyl-1,3-cyclohexanedione; 3-(2'-Acetyl-cyclohexyl)-1,5,5-trimethyl-2,4-pyrrolidinedione.

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