... Jpn. 74 12 The Chemical Society of Ja- pan The Chemical Society of Ja- pan OB 12 15 2001 2415 2420 BCSJA8 0009-2673 01190 6 8 2001 8 15 2001 ... The other chemicals were commercial products and were used without purification. ... [BULLETIN 2001/11/29 15:48] 01190 ...