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We are looking to purchase the below product and would appreciate it if you could provide your best quotation and COA at the earliest. Product Name: - D-Tryptophan CAS No. 153-94-6 Quantity: -50 KG & 250 KG Please include the following details in your quotation: Product-COA /MOA/MSDS Lead time and availability Payment terms Kindly share the quotation at your earliest convenience. If you require any further information, please feel free to reach out.