Labelled Arsenobetaine (A778500). It was first reported as a natural constituent of lobster in 1977, and although subsequent work has demonstrated its presence in a wide range of marine and terrestrial organisms.
Seven arsenic species have been quantified in a new NIST frozen human urine Std. Ref. Material (SRM) 2669. The species measured were: arsenite (As(III)), arsenate (As(V)), monomethylarsonate (MMA), dimethylarsinate (DMA), arsenobetaine (AB), arsenocholine (AC), and trimethylarsine oxide (TMAO).
Payment
eBioChem Escrow service is especially designed for online transaction. You, as a buyer, will pay the Supplier ONLY after you receive the item(s) and are satisfied with the item(s). This value-added service is absolutely FREE and is available for all transactions at eBioChem.com.
Payment Method
Alipay:
Alipay can support the domestic Union pay card with RMB payment
payPal:
Credit Card:
Paypal can support all of the foreign credit card payment
