Fluorescent stain containing pyrylium salt and fluorescent stain

Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives

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549 13, 549 28, 549356, 536 2431, 536 2432, 536 2433, 435 6, C07H 2104, C07D33500, C12Q 168

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060229616

ABSTRACT:
A stain for a nucleic acid characterized by containing, as an effective component, a pyrylium salt compound having Y as a negative portion and a pyrylium ring or a pyrylium-similar ring, wherein the ring is comprised of X selected from O, S, Se and Te as a hetero atom and has substituents R.sup.1, R.sup.2 and R.sup.3, wherein each of R.sup.1 and R.sup.2 is independently a hydrogen atom, sulfonate group, amino group, substituted or unsubstituted aryl group, etc., R.sup.3 is -A or -L-A, L is -L.sup.1 -, -L.sup.2 -L.sup.3 - or -L.sup.4 -L.sup.5 -L.sup.6 -, and each of L.sup.1 to L.sup.6 is independently --(CH.dbd.CH)--, a divalent group derived from the substituted or unsubstituted aryl group, etc., A is a substituted or unsubstituted aryl group, etc., and Y.sup.- is an anion. A method for detecting a nucleic acid which comprises the steps of reacting a sample with the stain, and then detecting, by an optical means, the double-strand nucleic acid stained with the stain in the case that the double-strand nucleic acid is contained in the sample.

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