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72128-38-2

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72128-38-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72128-38-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,1,2 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 72128-38:
(7*7)+(6*2)+(5*1)+(4*2)+(3*8)+(2*3)+(1*8)=112
112 % 10 = 2
So 72128-38-2 is a valid CAS Registry Number.

72128-38-2Downstream Products

72128-38-2Relevant articles and documents

Stereo- and enantioselective routes to functionalised cyclohexenes via heterodiene cycloadditions of 6-oxocyclohexene-1-carbaldehydes with ketene acetals

Hayes, Roy,Li, Ke-Dong,Leeming, Peter,Wallace, Timothy W.,Williams, Richard C.

, p. 12907 - 12928 (2007/10/03)

Various substituted cyclohexenes related to α-cyclocitral have been prepared using the heterodiene cycloadditions of 2-formyl-4,4-dimethyl-2- cyclohexen-1-one 4 with ketene acetals as the pivotal step. The key intermediates are accessible in homochiral form via an auxiliary-based sequence in which a C2-symmetric ketene acetal derived from 1,2-bis(2- methylphenyl)ethane-1,2-diol 2a serves as the 2π component. The diol 2a can be recovered in optically pure form.

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