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Availability: In stock

α-Substance IB


Product No. Pack Size Available ADS InfoAnalytical Data Sheet List Price Online Order Price Qty
4002167.0025 25 mg Ships within 3-5 business days  
CHF 567.00
CHF 527.31 (7%)
4002167.0100 100 mg Ships within 3-5 business days  
CHF 1,702.00
CHF 1,582.86 (7%)


α-Substance IB is produced by α-mating type cells of Saccharomyces cerevisiae and induces sexual agglutinability in the opposite a type cells.
RGPFPI corresponds to β-casein (200-205), it has been detected in casein hydrolysates. The hexapeptide has also found use as test compound in the development and evaluation of analytical methods for peptides.
CAS Number (acetate) 64566-61-6.
Catalog Number H-1840
One Letter Code RGPFPI
Molecular Formula C₃₃H₅₁N₉O₇
Relative Molecular Mass 685.82
CAS Registry Number [60407-48-9]
Source Synthetic
Storage Conditions -20 ± 5 °C
Areas of Interest Food Research & Nutrition

Product citations

M.D'Hondt et al., Food Chem., 128, 114 (2011)
H.Aoyagi and N.Izumiya, Bull. Chem. Soc. Jpn., 50, 2387 (1977)
A.Sakurai et al., Agric. Biol. Chem., 40, 1451 (1976)