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Here are CAS No. for some typical Piperazine items which we are offering at both good price and quality. 74879-18-8 169447-70-5 38869-47-5 3022-15-9 158663-69-5 126330-90-3 129365-23-7 147081-29-6 163765-44-4 218278-58-1 138775-03-8 For more new products and similar products, we also provide you: -Specialty Fine Chemical -Custom Synthesis -Custom manufacture. We also offer: Piperidine series, Pyrrolidine series, Soy Isoflavones & Camptothecin series. We are looking forward to working with you by all of our sincerity. 
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Contact Info:
Sichuan Guanghan Bio-Tech Co., Ltd
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Piperazine, Methylpiperazine