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121743-00-8

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121743-00-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121743-00-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,7,4 and 3 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 121743-00:
(8*1)+(7*2)+(6*1)+(5*7)+(4*4)+(3*3)+(2*0)+(1*0)=88
88 % 10 = 8
So 121743-00-8 is a valid CAS Registry Number.

121743-00-8Relevant articles and documents

Synthesis of 2,3-Dihydro-6-methylthienofuran (Kahweofuran), a Coffee Aroma Component, from an Acyclic Precursor

Brenna, Elizabetta,Fuganti, Claudio,Serra, Stefano,Dulio, Andrea

, p. 551 - 563 (2007/10/03)

Kahweofuran 1, one of the impact flavours of roasted coffee, was obtained from the acyclic unsaturated ester 8, produced in a Stobbe condensation of α-methylcinnamaldehyde 6 with dimethyl succinate 7, through the key intermediate tetrahydrothiophene 14 and the C-7 derivatives 20 or 24, respeectively.

SYNTHESIS OF SUBSTITUTED TETRAHYDROPYRIDINES AND M-HYDROXYBENZOIC ACIDS

Clinch, K.,Marquez, C. J.,Parrott, M. J.,Ramage, R.

, p. 239 - 258 (2007/10/02)

A series of substituted 1,2,3,6- (5) and 1,2,5,6-tetrahydropyridines (6) have been synthesised via intramolecular 1,6-Michael addition of methoxycarbonyl-2,4-dienylamines (10).The kinetics of these reactions have been investigated and an explanation of substituent effects is advanced.Also a new route to m-hydroxybenzoic acids has been established by cyclisation of substituted hexa-3,4:5,6-dienoic acids.

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