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74229-43-9

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74229-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74229-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,2,2 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 74229-43:
(7*7)+(6*4)+(5*2)+(4*2)+(3*9)+(2*4)+(1*3)=129
129 % 10 = 9
So 74229-43-9 is a valid CAS Registry Number.

74229-43-9Downstream Products

74229-43-9Relevant articles and documents

MACROHETEROCYCLES. 5. SYNTHESIS OF MACROCYCLIC AMIDO ESTERS AND AMIDO THIOESTERS ON THE BASIS OF DERIVATIVES OF α-HYDROXY AND α-MERCAPTO ACIDS

Luk'yanenko, N. G.,Bogat-skii, A. V.,Popkov, Yu. A.

, p. 222 - 225 (2007/10/02)

3,6-Dioxa-4-keto-, 2-benzyl-3,6-dioxa-4-keto-, and 3-oxa-6-thio-5-ketooctanedioic acids were obtained by the reaction of diglycolic acid anhydride with glycolic, β-phenyllactic, and thioglycolic acids. 2,9-Dibenzyl-3,8-dioxa-4,7-diketodecanoic acid was obtained by the reaction of succinyl chloride with β-phenyllactic acid.Eight macrocyclic amido esters and amido thioesters that are new polydentate macrocyclic ligands were synthesized by the reaction of the chlorides of the acids obtained with 3-oxa-1,5-diaminopentane, 3,6-dioxa-1,8-diaminooctane, and 1,4-diaminobutane.

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