Bispyrazolone is an impurity of Edaravone.

CAS：7477-67-0
中文别名：双(3-甲基-1-苯基-5-吡唑啉酮);4,4\'-双-(3-甲基-1-苯基-5-吡唑啉酮);3,3\'-二甲基-1,1\'-二苯基-4,4\'-联(5-吡唑啉酮);双吡唑啉酮;
英文别名：5,5\'-dimethyl-2,2\'-diphenyl-1,2,1\',2\'-tetrahydro-[4,4\']bipyrazolyl-3,3\'-dione;BIS(1-PHENYL-3-METHYL-5-PYRAZOLONE);3,3\'-dimethyl-1,1\'-diphenyl-4,4\'-bi-5-pyrazolone;4,4\'-bis-(1-phenyl-3-methyl-2-pyrazolin-5-one);edaravone diMer;3,3\'-dimethyl-1,1\'-diphenyl-4,4\'-bi-4H-pyrazole-5,5\'(1H,1\'H)-dione;edaravone related substance A;3,3\'-Dimethyl-1,1\'-diphenyl-(4,4\'-bi-2-pyrazoline)-5,5\'-dione;BIS(3-METHYL-1-PHENYL-5-PYRAZOLONE);bis-pyrazolone;Bis(1-phenyl-3-methyl-5-pyrazo;bis-4,4\'-(3-methyl-5-oxo-1-phenylpyrazole);
分子式：C20H18N4O2
分子量：346.383
精确质量：346.143
Psa：65.34
Logp：2.0654

EINECS号：231-282-5

外观与性状：奶油色至黄色结晶粉末
密度：1.306g/cm3
沸点：428.1ºC at 760 mmHg
熔点：355 °C
闪点：212.7ºC
折射率：1.654

安全说明：S36/37
WGK Germany：3
危险类别码：R43
危险品标志：Xi

用途
钴、铜、铁、镍、银、氢氰酸、氰酸、氨及维生素B12的测定。