1879-26-1 4-14-00-02749 (Beilstein Handbook Reference) BRN 2661558 Benzenesulfonic acid, 4-((methoxycarbonyl)amino)-, hydrazide (9CI) CARBANILIC ACID, p-SULFO-, N-METHYL ESTER, S-HYDRAZIDE Carbanilic acid, p-sulfo-, C-methyl ester, hydrazide (7CI,8CI) ChKhz 5 Porofor Chkhz-5 Porophore 4X3-5 n-Methylurethanebenzenesulfohydrazine p-Sulfocarbanilic acid C-methyl ester, hydrazide p-Sulfocarbanilic acid, N-methyl ester, S-hydrazide