Glycylglycine CAS No. 556-50-3 N-Glycylglycine¹

Product Description     Product Description Glycylglycine is the dipeptide of glycine, making it the simplest peptide.The compound was first synthesized by Emil Fischer and Ernest Fourneau in 1901 by boiling 2,5-diketopiperazine (glycine anhydride) with hydrochloric acid. Shaking with alkali and other synthesis methods have been reported.Because of its low toxicity, it is useful as a buffer for biological systems with effective ranges between pH 2.5-3.8 and 7.5-8.9, however, it is only moderately stable for storage once dissolved.It is used in the synthesis of more complex peptides.Glycylglycine has also been reported to be helpful in solubilizing recombinant proteins in E. coli. Using different concentrations of the glycylglycine improvement in protein solubility after cell lysis has been observed .English name: GlycylglycineCAS: 556-50-3Synonym: Glycyl-glycine; N-Glycylglycine; Diglycine; Gly-Gly    Product Parameters Test ItemsStandardAppearanceWhite to off-white powderHPLC≥99%Heavy Metals (Pb)Not more than 10PPMAssay98.5% to 100.5%Chioride(CI)Not more than0.020%Ammonium(NH4)Not more than 0.02%Residue on ignitionNot more than 0.15%Sulfate(SO4)Not more than 0.020%Loss on DryingNot more than 0.20%Lron(Fe)Not less than 30ppmArsenic(As2O3)Not more than 1ppmOther amino acidsChromatographically not detectable FAQQ1: May I get one sample before placing order?Re: Yes, Sample are available. For normal products, samples are for free and you just need to bear the freight; For those high value products, you just need to freight and certain product cost. When we both cooperate for some times or when you are our VIP customer, free sample will be offered when you need.Q2: Which payment is available for your company?Re: T/T, L/C . You can choose the one which is convenient for you.Q3: How and when can I get my goods after payment?Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT etc.)or by air. Usually it will cost 3-5days that you can get the goods after delivery.For large quantity products,shipping by see is worthwhile.It will cost days to weeks to come to your destination port, which depends onwhere the port is.Q4: Is there any possible to use my appointed label or package?Re: Yes. If needed, we'd like to use label or package according to your requirement.Q5: How can you guarantee the goods you offer is qualified? Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide for you all are qualified. We will have goods tested and provide COA before delivery for sure.    

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