L-Isoleucine Crystal size:100 GM 50% COLOR (APHA) 20 ULTRAVIOLET

50% COLOR (APHA) 20 ULTRAVIOLET ABSORBANCE (1 cm cell vs

0 % CHROMATOGRAPHIC PURITY TO PASS TEST TO PASS TEST WATER 0

Test Specification Min Max ASSAY (Bi) 49% 54% ARSENIC 10

02% IODIDE (I) TO PASS TEST TO PASS TEST NITROGEN COMPOUNDS (as N) 0

Test Specification Min Max APPEARANCE @ 25 Degrees C CLEAR

L-Isoleucine Crystal size:100 GM 50% COLOR (APHA) 20 ULTRAVIOLETTest Specification Min Max ASSAY (C[@6@]H[@13@]NO[@2@]) 98. 5 101. 5 % 98. 5 101. 5 % SPECIFIC ROTATION [a][@D@] +38. 5 to+41. 5 +38. 5 to+41. 5 LEAD (Pb) 10 ppm HEAVY METALS 0. 00% ARSENIC (As) 1. 5 ppm LOSS ON DRYING @ 105 C 0. 30% RESIDUE ON IGNITION 0. 20%