General description
The side-chain Acm group is stable to TFA but can be removed with Hg(II) [1] or Ag(I) [2] to give cysteinyl peptides, or oxidatively with Tl(III) [3] or I2 [4] to generate cystinyl peptides.
Associated Protocols and Technical Articles
Cleavage and Deprotection Protocols for Fmoc SPPS
Fmoc SPPS of Cysteine-Containing Peptides
Literature references
[1] D. F. Veber, et al. (1972) J. Am. Chem. Soc., 94, 5456.
[2] M. Yoshida, et al. (1990) Chem. Pharm. Bull., 38, 273.
[3] N. Fujii, et al. (1987) Chem. Pharm. Bull., 36, 2339.
[4] B. Kamber, et al. (1980) Helv. Chim. Acta, 63, 899.
Linkage
Replaces: 04-12-1014
Analysis Note
Color (visual): white to slight yellow to beige
Appearance of substance (visual): powder
Identity (IR): passes test
Enantiomeric purity: ≥ 99.5 % (a/a)
Purity (TLC(011B)): ≥ 98 %
Purity (TLC(0811)): ≥ 98 %
Assay (HPLC, area%): ≥ 99.0 % (a/a)
Solubility (25 mmole in 50 ml DMF): clearly soluble
UV/VIS (E(450 bis 600 nm)): ≤ 50 mAU
Assay (acidimetric): ≥ 96.0 %
Water (K. F.): ≤ 5.00 %
To see the solvent systems used for TLC of Novabiochem® products please click here.
Legal Information
Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany
- UPC:
- 41115401
- Condition:
- New
- Weight:
- 1.00 Ounces
- HazmatClass:
- No
- WeightUOM:
- LB
- MPN:
- 8520060025