N-Succinimidyl-3-(2-pyridyldithio) Propionate


Product #
N-Succinimidyl-3-(2-pyridyldithio) Propionate
N-Succinimidyl-3-(2-pyridyldithio) Propionate, SPDP
CAS Number
Molecular Weight
Color & Form
White to slightly yellow solid
Melting Point
85° C
Solubility in water
Slightly soluble

N-Succinimidyl-3-(2-pyridyldithio) Propionate – 100 mg
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Information about N-Succinimidyl-3-(2-pyridyldithio) Propionate / CAS 68181-17-9

  • Primary amine and sulfhydryl reactive
  • Thiolation
  • Cleavable
  • Hapten-carrier protein conjugation
  • Antibody-toxin conjugation


  1. Cumber, J.A., et al. (1985) Methods Enzymol. 112, 207-224.
  2. Gordon, R.D., et al. (1987) PNAS. 84, 308-312.
  3. Carlsson, J., et al. (1978) Biochem. J. 173, 723-737.


Transportation Information
Not a dangerous good
  • Pictogram: Irritant
Signal Word
Hazardous Statements
  • H315
    Causes skin irritation.
  • H319
    Causes serious eye irritation.
  • H335
    May cause respiratory irritation.
Precautionary Phrases
  • P261
    Avoid breathing dust/fume/gas/mist/vapours/spray.
  • P264
    Wash skin thoroughly after handling.
  • P271
    Use only outdoors or in a well-ventilated area.
  • P280
    Wear protective gloves/protective clothing/eye protection/face protection.
  • P302+P352
    IF ON SKIN: wash with plenty of soap and water.
  • P304+P340
    IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
  • P305+P351+P338
    IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Detailed Safety and Handling Information can be found on our Safety Data Sheet (SDS).