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Merck
CN

Specification Sheet

Product Name
(R)-(+)-α-Lipoic acid analytical standard

Product Number
04471

Product Brand
sial

CAS Number
1200-22-2

Molecular Weight
206.33

Test

Specification

APPEARANCE (COLOR)Faint Yellow to Yellow
APPEARANCE (FORM)Powder or Crystals
PURITY (HPLC AREA %)≥ 98.0 %
SPECIFIC ROTATION (20/D)110.0 - 120.0 Degrees
CONCENTRATIONC=1 IN ETHANOL
PROTON NMR SPECTRUMCONFORMS TO STRUCTURE
EXPIRY PERIOD24 MONTHS