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160549-18-8

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160549-18-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 160549-18-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,0,5,4 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 160549-18:
(8*1)+(7*6)+(6*0)+(5*5)+(4*4)+(3*9)+(2*1)+(1*8)=128
128 % 10 = 8
So 160549-18-8 is a valid CAS Registry Number.

160549-18-8Downstream Products

160549-18-8Relevant articles and documents

Modification of the intact retinoid structure in the cyclohexenyl region: Alkylation of methyl 4-oxoretinoate

Shealy,Hosmer,Riordan

, p. 1095 - 1098 (1993)

Alkylation of methyl 4-oxoretinoate under kinetic-control conditions gives predominantly 3-alkyl-4-oxoretinoates. 3,3-Disubstituted 4-oxoretinoates are obtained similarly from the 3-monosubstituted derivatives, although introduction of the second substituent is more difficult. Evidence has been obtained for a much slower rate of alkylation α to the ester group.

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