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We are SHENGDA PHARMACEUTICAL CO., LTD, our lab can offer below material in stock:

Ruxolitinib (INCB018424) API And intermediates

3-cyclopentylacrylaldehyde   (CAS# 118235-51-1)  

Methyl 3-cyclopentylpropiolate

Appearance     Off white to Slightly yellow powder          Off white powder

Identification by NMR      Conforms to the reference spectrum      conforms

Purity by HPLC

Purity        NLT 98%   99.7%

SFC   NLT 98%   99.8%

Individual impurity   NMT1.0%         0.3%

Total impurity  NMT 1.5%        0.3%

Residual Solvent

Remark: the sample conforms to above specifications.