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维生素E 标准品系列套装

上一篇 / 下一篇  2008-11-10 15:47:10 / 个人分类:标准品

维生素E又名生育酚或产妊酚
13788991907 提供
维生素E标准品,共5种,各250mg
  1. d-alpha-tocopherol 1 vial x 250 mg
  2. d-beta-tocopherol 1 vial x 250 mg
  3. d-gamma-tocopherol 1 vial x 250 mg
  4. d-delta-tocopherol 1 vial x 250 mg
  5. 2,2,5,7,8-Pentamethyl-6-hydroxychroman (PMC) 1 vial x 250 mg
Note: PMC is used as the internal standard for HPLC analysis of tocopherol, but not for GC analysis.

Storage condition:Each vial is aluminum-packed with an oxygen adsorbent. One opening the vials, store the reagent under inert gas in a refrigerator in the dark. Under such conditions, the reagents are stable for 6 months.

Instruction for use (preparation of Solution)

  1. Weigh 50 ~ 100 mg of each reagent by chemical balance, to the nearest 0.1 mg.
  2. Add ethanol or hexane to dissolve the reagent to the final concentration of 1 mg vitamin homologue/mL as the stock solution. The stock solution in tightly capped vials are stable at 5 degrees C for a month.
  3. The standard solutions for each homologue can be prepared by dilution the stock solution just before use.
烯生育酚20321
标准品以下电话13788991907 提供三烯生育酚三支,独立包装,每支 各 10mg
TOCOTRIENOL, D-ALPHA
TOCOTRIENOL, D-DELTA
TOCOTRIENOL, D-GAMMA

电话13817370083提供
另有ALPHA 、BETA 、DELTA、GAMMA 三烯生育酚 标准品
TOCOTRIENOL, D-ALPHA     10mg
TOCOTRIENOL, D-BETA        5mg
TOCOTRIENOL, D-DELTA     10mg
TOCOTRIENOL, D-GAMMA    10mg

手机:13788991907 提供
邮箱:
手机 @163.com


TAG: tocopherol TOCOTRIENOL 标准品 三烯生育酚 生育酚 维生素E

引用 删除 yayiyayiyou   /   2009-09-03 09:39:01
急需维生素E四种异构体标准品,需有权威证书。
另需维生素E的对照品(需含有4种异构体)。
如有的话,请尽快回复我,邮箱shuang_201@sohu.com
糖苷酶底物标准品毒素 引用 删除 shhcs   /   2009-05-18 17:22:41
DL- Tocol 母生育酚
303-06921  dl -Tocol (97+ %) 250 mg
 

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