$FERMOPURE<sup>®</sup> Natural L-Cystine INFANT FOOD

L-Cystine is the amino acid dimer formed when of a pair of L-Cysteine molecules are joined by a disulfide bond through oxidation. L-Cysteine is one of the 20 natural amino acids and, besides methionine, the only one which contains sulfur. WACKER has developed a production method for natural L-Cystine via fermentation from non-animal and non-human raw materials. FERMOPURE® Natural L-Cystine Infant Food is a white or almost white, crystalline powder, practically insoluble in water and alcohol. It dissolves in dilute solutions of alkali hydroxides.

  • CAS No. 56-89-3
  • Empirical formula C6H12N2O4S2
  • Molecular weight 240.30


  • No human or animal sources
  • Vegan
  • Sustainable plant-based raw materials
  • Natural
  • Utmost purity and safety
  • No allergen labeling required


FERMOPURE® Natural L-Cystine Infant Food is used as a substance for nutritional purposes in infant formulae and follow-on formulae. It is also a nutritional substance in foods intended for particular nutritional uses in order to improve the nutritional value.


Units of 25 kg


Storage and transportation: a temperature of 25°C is recommended for optimal product quality, but 40°C up to 180 days does not affect the quality. FERMOPURE® NATURAL L-CYSTINE INFANT FOOD has a shelf life of at least 36 months when stored in unbroken original packaging in dry storage areas.

The best use before date of each batch is shown on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.

Sales and support

Wacker Chemical Corporation
3301 Sutton Road
Adrian, MI 49221-9397
United States
+1  888  922-5374 (Phone)

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