Spectra Stable Isotopes Specification list:
Chemical Purity: >95% by HPLC
Chemical Purity: ¹H and ¹³C NMR Structure confirmation
Chirality: >95% L-isomer by GC

Isotopic Enrichment: ¹³C >98%, ²H >97%, ¹⁵N >98%, By LCMS, GCMS, Unless otherwise specified.

If you do not see an Amino Acid that you require in this section, please call.

Description		% Isotope Enrichment		Product No.		Quantity		Price
15N-Alanine		15N, >98%		538ALA98		1 g		$285
15N4-Arginine		15N, >98%		538ARG98		250 mg		$1,155
15N2-Asparagine		15N, >98%		538ASX98		250 mg 1 g		$355 $990
15N-Aspartic Acid		15N, >98%		538ASP98		1 g		$338
15N-Cysteine		15N, >98%		538CYS98		250 mg 1 g		$760 $2,750
15N-Glutamic Acid		15N, >98%		538GLU98		250 mg 1 g		$75 $240
15N2-Glutamine		15N, >98%		538GLX98		250 mg 1 g		$500 $1,690
15N-Glycine		15N, >98%		538GLY98		1 g		$108
15N3-Histidine		15N, >98%		538HIS98		250 mg 1 g		$725 $2,600
15N-Isoleucine		15N, >98%		538ILE98		250 mg 1 g		$165 $600
15N-Leucine		15N, >98%		538LEU98		250 mg 1 g		$80 $230
15N2-Lysine		15N, >98%		538LYS98		250 mg 1 g		$770 $2,225
15N-Methionine		15N, >98%		538MET98		1 g		$715
15N-Phenylalanine		15N, >98%		538PHE98		250 mg 1 g		$70 $235
15N-Proline		15N, >98%		538PRO98		250 mg 1 g		$315 $1,100
15N-Serine		15N, >98%		538SER98		250 mg 1 g		$165 $600
15N-Threonine		15N, >98%		538THR98		250 mg 1 g		$415 $1,350
15N2-Tryptophan		15N, >98%		538TRP98		250 mg 1 g		$665 $1,900
15N-Tyrosine		15N, >98%		538TYR98		250 mg 1 g		$140 $475
15N-Valine		15N, >98%		538VAL98		250 mg 1 g		$85 $275