• British Pharmacopoeia Volume V
  • Appendices
  • Appendix I A. General Reagents

l-Cysteine

l-Cysteine C3H7NO2S = 121.2 (52-90-4)

General reagent grade of commerce.

bp2012_v5_46_003_[appendix_i_a]_c [alpha]_20_d.png, about +6.5 (10% w/v in 1m hydrochloric acid).