Dear sir or madam:
4-piperidinopiperidine(CAS#4897-50-1) is one of our strongest products, we can offer with competitive price and excellent quality. Following is the specification:
Appearance:off-white ceraceous solid
Residue on ignition:0.1% max.
Heavy metal:20ppm max.
Total impurities:1.0% max.
Assay(GC) :99.0% min.
If you are interested in it please feel free to let us know.