Order Information

For goods in stock


Immediate delivery will be arranged after confirming the order. Customers are expected to receive the item in 4-5 days.

For goods out of stock

Effective email will be replied in 24 hours with exact information of leading time. All products will be delivered to your place by DHL, FedEx or by sea/air. Our sales person will keep you informed of the delivery information via email. All inquiries will be dealt immediately by sales person with serious attitude.

After service

Easy return in TwoChem, all products will undergo strict quality test with the full QC analysis, including NMR, LC-MS, HPLC, and chiral compounds with chiral HPLC. TwoChem chemicals are of high purity, typically over 98% by HPLC, and the bioactivity is also approved. TwoChem has Satisfaction Guarantee return policy. If you do not satisfy with the quality of our products, you may Return/Exchange any items in 3 weeks after you receive the products. Please contact the Customer Service (info@twochem.com) to obtain a Return/Exchange Authorization. Your research is very important to us and your satisfaction is our top priority.

· Items returned without prior authorization may not be accepted. 
· Please inform us of the Purchase Order Number or Package Tracking Number when returning.  
· Payment refund or item exchange will be finished in 10 working days once your purchased goods are received.