| 单词 | pyrazole blue |
| 释义 | > as lemmaspyrazole blue pyrazole blue n. rare a blue indigoid dye whose molecule consists of two substituted pyrazolone rings linked by a carbon–carbon double bond.Formula: C20H16N4O2. ΚΠ 1894 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) IV. 349/2 Pyrazole blue, C20H16N4O2. 1943 Thorpe's Dict. Appl. Chem. (ed. 4) VI. 456/2 Another dye of indigoid type, Pyrazole Blue..was discovered by Knorr..who showed its similarity to indigo. 1970 Tetrahedron 26 3449 Excess base in DMSO will cleave pyrazole-blue to yield the radical anion of 1-phenyl-3-methyl-2-pyrazoline-4,5-dione. < as lemmas |
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