Methyl-beta-cyclodextrin (DS~12) primary standard

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Price: € 150.00 / g

Abbreviation: RAMEB PS
CAS Number: 128446-36-6
Product Number:
Cyclodextrin type: Randomly substituted cyclodextrins, neutral
Quality: analytical standard
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Chemical and Physical Description
Average Molecular Formula C42H70-nO35· (CH3)n
Average Formula Weight 1135 + n·(14.0)
Possible impurities Beta-cyclodextrin
Solubility
(in 100 cmsolvent, at 25 °C)
Water: > 50 g
Methanol: > 50 g
Chloroform: ~ 2 g
Specification
Test Method Range
Appearance Visual white or almost white powder
Identification A IR (USP <197>, EP 2.2.24) conform with theoretical structure
Identification B NMR (EP 2.2.33) conform with theoretical structure
Clarity of solution (10%, w/v) Visual the solution is clear, and essentially free from particles of foreign matter
Conductivity (25 °C, 1% solution in water) EP 2.2.38 max. 200 µS/cm
Residue on ignition USP  max 0.5%
Average Degree of Substitution (n) NMR (EP 2.2.33) Molar substitution: 0.4 - 1.5
Light adsorbing impurities UV-VIS (EP 2.2.25) A230-350 nm < 0.10
A350-720 nm < 0.05
Heavy metals USP <231> Cadmium  NMT 0.5 µg/g
Lead  NMT 0.5 µg/g
Arsenic  NMT 1.5 µg/g
Mercury  NMT 3.0 µg/
Related substances:
residual BCD
HPLC max. 0.1%
Loss on drying halogen dryer max. 5.0%
Purity  calculated > 95%
Storage: at room temperature, in tightly closed container.

MSDS Downloads

  • CY2004-1-RAMEB

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