Sigma-Aldrich
Nickel
镍
Retinoic Acid
视黄酸
Silver
银
Tantalum
钽
嗜热菌蛋白酶 from Geobacillus stearothermophilus, Thermolysin from Geobacillus stearothermophilus
Tin
锡
Tungsten
钨
Nα-Benzoyl-DL-arginine 4-nitroanilide hydrochloride
Nα-苯甲酰-DL-精氨酸 4-基苯酰胺 盐酸盐