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72189-17-4

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72189-17-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72189-17-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,8 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 72189-17:
(7*7)+(6*2)+(5*1)+(4*8)+(3*9)+(2*1)+(1*7)=134
134 % 10 = 4
So 72189-17-4 is a valid CAS Registry Number.

72189-17-4Relevant articles and documents

SYNTHESIS OF SOME ANALOGS OF ABSCISIC ACID FROM 3-CYCLOHEXENE-1-CARBALDEHYDE AND ITS METHYL HOMOLOGS

Gramenitskaya, V. N.,Koz'mina, E. A.,Golovkina, L. S.,Vul'fson, N. S.

, p. 1690 - 1695 (2007/10/02)

The E,E and Z,E isomers of 5-substituted 3-methyl-2,4-pentanedioic acids were synthesized from 3-cyclohexene-1-carbaldehyde and its methyl homologs.The possibilities of their production by the Reformatsky and Wittig reactions or by condensation of substituted 3-cyclohexene-1-carbaldehydes with diethyl β-methylglutaconate were investigated.It was shown that the last path makes it possible to obtain the Z,E isomers preferentially.

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