Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Lysine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Lysine impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Lysine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Our Lysine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Lysine Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "L-Lysine Dihydrochloride D9,15N2" | Stable Isotopes | CS-R-00199 | Not Available | Enquire |
| 6-N-Acetyl-L-lysine-d8 | Stable Isotopes | CS-T-94568 | 692-04-6 (Unlabelled) | Enquire |
| Dl-lysine clonixinate D4 | Stable Isotopes | CS-O-03622 | Not Available | Enquire |
| DL-Lysine-2-15N 2HCl | Stable Isotopes | CS-C-01446 | 2747-89-9 | Enquire |
| DL-Lysine-4,4,5,5-d4 Dihydrochloride | Stable Isotopes | CS-C-00266 | 284664-88-6 | Enquire |
| D-Lysine-13C6 | Stable Isotopes | CS-T-96907 | 1182252-66-9 | Enquire |
| D-Lysine-3,3,4,4,5,5,6,6-d8 Dihydrochloride | Stable Isotopes | CS-C-00314 | 790637-06-8 (Free base) | Enquire |
| D-Lysine-4,4,5,5-d4 Dihydrochloride | Stable Isotopes | CS-C-00276 | 1202063-77-1 (Free base) | Enquire |
| Leucyl-Phenylalanyl-Isoleucyl-Glutamyl-Tryptophyl-Leucyl-d10... | Stable Isotopes | CS-O-13854 | Not Available | Enquire |
| L-Lysine 13C6 | Stable Isotopes | CS-T-57267 | 55443-57-7 | Enquire |
| L-Lysine Clonixin D6 | Stable Isotopes | CS-EO-02514 | 55837-30-4(Unlabelled) | Enquire |
| L-Lysine Clonixinate-d6 | Stable Isotopes | CS-EO-02513 | 55837-30-4(Unlabelled) | Enquire |
| L-Lysine D4 Dihydrochloride | Stable Isotopes | CS-R-00194 | 657-26-1(Unlabeled) | Enquire |
| L-Lysine Dihydrochloride α-15N | Stable Isotopes | CS-R-00197 | 204451-50-3 | Enquire |
| L-Lysine Dihydrochloride 13C | Stable Isotopes | CS-R-00188 | 202190-50-9 | Enquire |
| L-Lysine Dihydrochloride 13C, epsilon-15N | Stable Isotopes | CS-R-00196 | Not Available | Enquire |
| L-Lysine Dihydrochloride 13C6, 15N2 | Stable Isotopes | CS-R-00191 | 202406-54-0 | Enquire |
| L-Lysine Dihydrochloride 13C6, D9, 15N2 | Stable Isotopes | CS-R-00189 | 1994268-57-3 | Enquire |
| L-Lysine Dihydrochloride 15N2 | Stable Isotopes | CS-R-00192 | 204451-51-4 | Enquire |
| L-Lysine Dihydrochloride D8 | Stable Isotopes | CS-R-00193 | Not Available | Enquire |
| L-Lysine Dihydrochloride D9 | Stable Isotopes | CS-R-00198 | Not Available | Enquire |
| L-LYSINE Dihydrochloride EPSILON-15N | Stable Isotopes | CS-R-00200 | 204634-11-7 | Enquire |
| L-Lysine Dihydrochloride-13C6 | Stable Isotopes | CS-R-00190 | 201740-81-0 | In Stock |
| L-Lysine-α-15N, Cbz, N-Boc | Stable Isotopes | CS-CH-00130 | 1217451-81-4 | Enquire |
| L-Lysine-13C.HCl | Stable Isotopes | CS-CH-00129 | 90147-15-2 | Enquire |
| L-Lysine-13C6, E-15N.HCl | Stable Isotopes | CS-CH-00121 | Not Available | Enquire |
| L-Lysine-13C6,15N2 hydrochloride | Stable Isotopes | CS-BX-00698 | 1200447-00-2 | Enquire |
| L-Lysine-13C6,15N2.HCl | Stable Isotopes | CS-CH-00123 | 1200447-00-2 | Enquire |
| L-Lysine-13C6.HCl | Stable Isotopes | CS-CH-00124 | 1228077-86-8 | Enquire |
| L-Lysine-15N.HCl | Stable Isotopes | CS-CH-00128 | 82783-00-4 | Enquire |
| L-Lysine-15N2.HCl | Stable Isotopes | CS-CH-00126 | 1217460-44-0 | Enquire |
| L-Lysine-4,4,5,5-d4 Hydrochloride | Stable Isotopes | CS-T-57268 | 284664-96-6 | Enquire |
| L-Lysine-α-N-fmoc ε-N-T-boc-13C6 | Stable Isotopes | CS-T-96906 | Not Available | Enquire |
| L-γ-Glutamyl-L-cysteinyl-L-lysine-13C5,15N | Stable Isotopes | CS-T-96947 | Not Available | Enquire |
| N2-(S)-1-Carboxy-3-phenylpropyl-L-lysine-d5 | Stable Isotopes | CS-T-97714 | Not Available | Enquire |
| N2-(S)-1-Ethoxycarbonyl-3-phenyl-d5-propyl-N8-trifluoroacety... | Stable Isotopes | CS-T-97529 | Not Available | Enquire |
| N6-({[3-(Methylsulfinyl)propyl]amino}carbonothioyl)lysine-13... | Stable Isotopes | CS-T-96891 | 1609243-64-2 | Enquire |
| N6-[(Allylamino]carbonothioyl]lysine-13C6,15N2 | Stable Isotopes | CS-T-97036 | 1609243-41-5 | Enquire |
| N6-[(Benzylamino)carbonothioyl]lysine-13C6,15N2 | Stable Isotopes | CS-T-97011 | 1609246-42-5 | Enquire |
| N6-{[(2-Phenylethyl)amino]carbonothioyl}lysine-13C6,15N2 | Stable Isotopes | CS-T-96882 | 1609246-45-8 | Enquire |
| Ne-(Ethoxycarbonylethyl)-L-lysine-d4 Methyl Ester (Mixture o... | Stable Isotopes | CS-T-75327 | 1356934-57-0 | Enquire |
| Ne-(Ethoxycarbonylmethyl)-L-lysine-d4 Methyl Ester | Stable Isotopes | CS-T-54295 | 1331910-52-1 | Enquire |
| Ne,Ne,Ne-Trimethyllysine-d9 | Stable Isotopes | CS-T-62474 | 1182037-78-0 | Enquire |
| Nα,Nε-Bis(ethoxycarbonylethyl)-L-lysine-d4 Methyl Ester | Stable Isotopes | CS-T-97008 | Not Available | Enquire |
| Nε-(1-Carboxymethyl)-L-lysine-d4 | Stable Isotopes | CS-T-94491 | 936233-18-0 | Enquire |
| Nε-(1-Carboxyethyl)-L-lysine-d4(Mixture of Diastereomers) | Stable Isotopes | CS-T-96992 | Not Available | Enquire |
| Nε,Nε,Nε-Trimethyl-d9-L-lysine HCl | Stable Isotopes | CS-C-00629 | 55528-53-5(Unlabelled) | Enquire |
| ε-(γ-L-Glutamyl)lysine-d4 | Stable Isotopes | CS-T-96946 | Not Available | Enquire |
| ε-(γ-L-Glutamyl)lysine-d5 | Stable Isotopes | CS-T-96945 | Not Available | Enquire |
API Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| DL-Lysine | API Standards | CS-DK-00019 | 70-54-2 | In Stock |
| D-Lysine | API Standards | CS-DK-00016 | 923-27-3 | In Stock |
| Fosravuconazole L-Lysine | API Standards | CS-O-46097 | 351228-71-2 | Enquire |
| Ketoprofen lysine | API Standards | CS-O-30956 | 57469-78-0 | In Stock |
| Lysine Clonixinate | API Standards | CS-O-01812 | 55837-30-4 | In Stock |
| α-Fructoselysine | API Standards | CS-T-55106 | 37548-12-2 | Enquire |
Metabolites
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| L-5-Hydroxylysine | Metabolites | CS-O-40850 | 1190-94-9 | Enquire |
| Leucyl-Phenylalanyl-Isoleucyl-Glutamyl-Tryptophyl-Leucyl-Lys... | Metabolites | CS-O-13853 | Not Available | Enquire |
| L-Glutamyl-L-cysteinyl-L-lysine | Metabolites | CS-T-55369 | 128960-73-6 | In Stock |
| L-Lysine Dihydrochloride | Metabolites | CS-R-00201 | 657-26-1 | In Stock |
| N-6-(Carboxyethyl)-L-lysine | Metabolites | CS-CX-00204 | 5746-03-2 | Enquire |
| Ne-(1-Carboxymethyl)-L-lysine | Metabolites | CS-O-06056 | 5746-04-3 | In Stock |
Impurities
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "(S)-N-Fmoc-N6,N6-dimethyl-L-lysine Hydrochloride" | Impurities | CS-T-24578 | 252049-10-8 | Enquire |
| "N2,N6-Bis(benzyloxycarbonyl)-L-lysine" | Impurities | CS-T-06718 | 405-39-0 | Enquire |
| "N6-[(2R,5S)-5-Amino-5-carboxy-2-hydroxypentyl]-5-oxo-L-lysi... | Impurities | CS-T-47732 | 75658-82-1 | Enquire |
| 5-Fluoro-D,L-lysine Hydrochloride | Impurities | CS-T-24084 | 118101-18-1 | Enquire |
| Allysine | Impurities | CS-T-84279 | 1962-83-0 | Enquire |
| Bendazac L-lysine | Impurities | CS-BF-00429 | 81919-14-4 | Enquire |
| CPP-Lysine | Impurities | CS-O-31093 | 138247-43-5 | In Stock |
| Fosravuconazole L-Lysine Ethanolate | Impurities | CS-O-45944 | 914361-45-8 | Enquire |
| Glycyl-histidyl-lysine, monocopper salt | Impurities | CS-O-11113 | 89030-95-5 | In Stock |
| Glycyl-L-histidyl-L-lysine | Impurities | CS-T-79281 | 49557-75-7 | Enquire |
| L-Lysine acetate salt | Impurities | CS-BX-01064 | 57282-49-2 | Enquire |
| L-Lysine Diethylamide Dihydrochloride | Impurities | CS-O-57184 | 266356-00-7 | Enquire |
| L-Lysine L-Malate | Impurities | CS-T-31168 | 71555-10-7 | In Stock |
| L-Lysine Methyl Ester Dihydrochloride | Impurities | CS-T-31166 | 26348-70-9 | Enquire |
| L-Lysine S-(Carboxymethyl)-L-Cysteine | Impurities | CS-P-01557 | 49673-81-6 | In Stock |
| L-N6-(1-Iminoethyl) Lysine 5-Tetrazole Amide, Dihydrochlorid... | Impurities | CS-T-56631 | 1322625-19-3 | Enquire |
| Lysine-methotrexate | Impurities | CS-T-85083 | 80407-56-3 | Enquire |
| Lysyllysine | Impurities | CS-O-57994 | 13184-13-9 | Enquire |
| N,N-Dibenzyloxycarbonyl-S,O,O-tri-benzyl-L--glutamyl-L-cyste... | Impurities | CS-T-52448 | 1356930-78-3 | Enquire |
| N2-(1-Ethoxycarbonyl-3-oxo-3-phenylpropyl)-N6-trifluoroacety... | Impurities | CS-O-49778 | 199002-02-3 | Enquire |
| N2,N2-Dimethyl-N6-(1-oxododecyl)-L-Lysine | Impurities | CS-T-53637 | 38079-57-1 | Enquire |
| N2-[(Phenylmethoxy)carbonyl]-L-lysine tert-Butyl Ester | Impurities | CS-T-39614 | 112157-39-8 | Enquire |
| N2-t-Boc-N6-(biotinamido-6-N-caproylamido)lysine | Impurities | CS-T-07472 | 102910-26-9 | Enquire |
| N6-(1-Iminoethyl)-L-lysine Hydrochloride | Impurities | CS-T-29211 | 150403-89-7 | Enquire |
| N6-(2-Methyl-1-oxo-2-propen-1-yl)-L-lysine | Impurities | CS-O-37028 | 45158-94-9 | Enquire |
| N6,N6-Dimethyl-N2-[(benzyloxy)carbonyl]-L-lysine tert-Butyl ... | Impurities | CS-T-53409 | 204074-51-1 | Enquire |
| N6-[(9H-Fluoren-9-ylmethoxy)carbonyl]-D-lysine Monohydrochlo... | Impurities | CS-T-77193 | 367272-52-4 | Enquire |
| N6-Carbobenzoxy-L-lysine N-Carboxyanhydride | Impurities | CS-T-50260 | 1676-86-4 | Enquire |
| N6-Trifluoroacetyl-L-lysine | Impurities | CS-T-62218 | 10009-20-8 | Enquire |
| Na-Acetyl-L-Lysine | Impurities | CS-T-00917 | 1946-82-3 | Enquire |
| N-Acetyl-L-Lysine Amide Hydrochloride | Impurities | CS-T-00918 | 104584-11-4 | Enquire |
| Ne-(Ethoxycarbonylethyl)-L-lysine Methyl Ester | Impurities | CS-T-54296 | 103954-36-5 | Enquire |
| Ne-(Ethoxycarbonylmethyl)-L-lysine Methyl Ester | Impurities | CS-T-22266 | 1331900-85-6 | Enquire |
| Poly-L-lysine hydrobromide | Impurities | CS-DL-00649 | 25988-63-0 | Enquire |
EP Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Lysine hydrochloride (L0900000) | EP Standards | CS-EG-01379 | 657-27-2 | Enquire |
Intermediates
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "N6-Carbobenzyloxy-N2,N2-bis(carboxymethyl)lysine" | Intermediates | CS-T-10220 | 209052-01-7 | Enquire |
| (S)-N6-(benzyloxy-carbonyl)-N2-(tert-butyloxycarbonyl)-lysin... | Intermediates | CS-DV-00415 | 2389-45-9 | Enquire |
| 5-Mercapto-N6-[[(4-nitrophenyl)methoxy]carbonyl]lysine | Intermediates | CS-T-57558 | 1313529-41-7 | Enquire |
| Aspartyllysine | Intermediates | CS-ED-11275 | 5891-51-0 | Enquire |
| Aspartylysine | Intermediates | CS-ED-11745 | 56523-60-5 | Enquire |
| Boc-l-beta-homolysine(cbz) | Intermediates | CS-AC-03709 | 346694-77-7 | Enquire |
| Boc-Nalpha-methyl-Ne-2-chlorobenzyl-oxycarbonyl-L-lysine | Intermediates | CS-ED-14010 | 151012-17-8 | Enquire |
| DL-Iysine Monohydrate | Intermediates | CS-AC-02189 | 885701-25-7 | In Stock |
| D-Lysine methyl ester dihydrochloride | Intermediates | CS-AC-04612 | 67396-08-1 | Enquire |
| Epsilon-n-methyl-l-lysine HCl | Intermediates | CS-T-92277 | 7622-29-9 | Enquire |
| Glycyl-L-lysine | Intermediates | CS-T-79497 | 997-62-6 | Enquire |
| L-beta-Homolysine Dihydrochloride | Intermediates | CS-T-78217 | 290835-83-5 | Enquire |
| L-Lysine 1-hydrate BioChemica | Intermediates | CS-BL-00009 | 39665-12-8 | Enquire |
| L-Lysine 4-nitroanilide dihydrobromide | Intermediates | CS-CE-00768 | 40492-96-4 | Enquire |
| L-Lysine 7-amido-4-methylcoumarin acetate salt | Intermediates | CS-CE-00696 | 201853-23-8 | Enquire |
| L-Lysine L-glutamate | Intermediates | CS-M-57314 | 5408-52-6 | Enquire |
| N,N’-Dibenzyloxycarbonyl-D-lysine | Intermediates | CS-T-88609 | 69677-02-7 | Enquire |
| N2-(R)-1-Ethoxycarbonyl-3-phenylpropyl-N8-trifluoroacetyl-D-... | Intermediates | CS-O-49236 | 1428117-83-2 | Enquire |
| N2-[S-(Carboxymethyl)-L-cysteinyl]-L-lysine Trifluoroacetic ... | Intermediates | CS-T-71349 | 82951-55-1 | Enquire |
| N2-Boc-N6-Fmoc-L-lysine | Intermediates | CS-DJ-00624 | 84624-27-1 | Enquire |
| N2-t-Boc-N6-(biotinamido-6-N-caproylamido)lysine N-Hydroxysu... | Intermediates | CS-T-49490 | 102910-27-0 | Enquire |
| N6-[(Phenylmethoxy)carbonyl]-D-lysine | Intermediates | CS-T-60453 | 34404-32-5 | Enquire |
| Nɑ-(tert-Butoxycarbonyl)-N-ε-carbobenzoxy-L-lysine | Intermediates | A070461 | 2389-60-8 | Enquire |
| Na,Ne-Bis-boc-L-lysine tert-Butyl Ester | Intermediates | CS-T-49520 | 97347-28-9 | Enquire |
| N-alpha-Acetyl-L-lysine p-nitroanilide hydrochloride | Intermediates | CS-ED-40486 | 201677-92-1 | Enquire |
| N-Boc-L-lysine | Intermediates | CS-T-49515 | 13734-28-6 | Enquire |
| N-Boc-N'-allyloxycarbonyl-L-lysine dicyclohexyl ammonium sal... | Intermediates | CS-AC-03449 | 110637-52-0 | Enquire |
| N-Epsilon-acetyl-l-lysine | Intermediates | CS-T-92105 | 692-04-6 | In Stock |
| Phacolysine Sodium Salt | Intermediates | CS-T-60301 | 3863-80-7 | Enquire |
| PHOTO-LYSINE | Intermediates | CS-ZE-26029 | 1863117-91-2 | Enquire |
| PrK - L - Lysine - Hydrochloride-salt | Intermediates | CS-S-00015 | 1428330-91-9 | Enquire |
| Tetralysine | Intermediates | CS-ED-30528 | 997-20-6 | Enquire |
| Valyl-alpha-glutamylserylseryllysine | Intermediates | CS-ED-39676 | 39194-96-2 | Enquire |
| α-Fructoselysine Dihydrochloride | Intermediates | CS-T-76990 | 96192-34-6 | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Boc-D-Lys(Boc)-OH | Fine Chemicals | CS-N-05174 | 106719-44-2 | Enquire |
| Carbocysteine lysine monohydrate | Fine Chemicals | CS-ED-00454 | 151756-26-2 | In Stock |
| DL-5-Hydroxy-DL-lysine Hydrochloride | Fine Chemicals | CS-T-27644 | 13204-98-3 | In Stock |
| L-Lysine Acetate | Fine Chemicals | CS-O-01784 | 57282-49-2 | In Stock |
| L-threonine | Fine Chemicals | CS-T-44290 | 72-19-5 | In Stock |
| Methyl lysinate | Fine Chemicals | CS-ED-42031 | 687-64-9 | Enquire |
| N,N′-Bis(trifluoroacetyl)-L-lysine methyl ester | Fine Chemicals | CS-BX-00749 | 1478-74-6 | Enquire |
| trans-Cyclooct-2-en-L-Lysine | Fine Chemicals | CS-O-33658 | 1580501-94-5 | Enquire |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| "N,N'-Bis(benzyloxycarbonyl)-L-lysine 4-Nitrobenzyl Ester" | Building Blocks | CS-T-49204 | 1331899-68-3 | Enquire |
| "N6,N6-Dimethyl-N2-[(benzyloxy)carbonyl]-L-lysine tert-Butyl... | Building Blocks | CS-T-19713 | 204074-50-0 | Enquire |
| 5-(Galactosylhydroxy)-L-Lysine | Building Blocks | CS-N-00378 | 32448-36-5 | Enquire |
| DL-Lysine dihydrochloride | Building Blocks | CS-DK-00014 | 617-68-5 | Enquire |
| D-Lysine monohydrochloride | Building Blocks | CS-DK-00024 | 7274-88-6 | Enquire |
| e-(-L-Glutamyl)lysine | Building Blocks | CS-T-55372 | 17105-15-6 | Enquire |
| Fmoc-l-beta-homolysine(boc) | Building Blocks | CS-T-77532 | 203854-47-1 | Enquire |
| H-Lysine(Isopropyl)-OH | Building Blocks | CS-O-58248 | 5977-09-3 | Enquire |
| L-Allysine | Building Blocks | CS-TA-04539 | 6665-12-9 | Enquire |
| L-Lysine | Building Blocks | CS-M-57561 | 56-87-1 | In Stock |
| N-α-Ac-Ne-2-Fmoc-L-lysine , = 98% (HPLC) | Building Blocks | CS-N-00317 | 148101-51-3 | Enquire |
| N2-(1S-Ethoxycarbonyl-3-phenylpropyl)-N6-trifluoroacetyl-L-l... | Building Blocks | CS-O-31999 | 116169-90-5 | Enquire |
| N2,N2-Bis(carboxymethyl) N6-Boc-L-lysine | Building Blocks | CS-T-49240 | 752200-93-4 | Enquire |
| N2-[(Phenylmethoxy)carbonyl]-L-lysine | Building Blocks | CS-T-39596 | 2212-75-1 | Enquire |
| N6-[2-(2-Furanyl)-2-oxoethyl]-L-lysine Dihydrochloride | Building Blocks | CS-T-77019 | 157974-36-2 | In Stock |
| N6-Carbobenzyloxy-L-lysine Benzyl Ester Hydrochloride | Building Blocks | CS-T-10271 | 6366-70-7 | Enquire |
| N6-Carbobenzyloxy-N2,N2-bis(carboxymethyl)-L-lysine | Building Blocks | CS-T-50255 | 113231-04-2 | Enquire |
| N6-Trifluoroacetyl-L-lysine N-Carboxyanhydride | Building Blocks | CS-T-45224 | 42267-27-6 | Enquire |
| Na, Ne-Bis-boc-L-lysine | Building Blocks | CS-T-49519 | 2483-46-7 | In Stock |
| Na-Boc-D-lysine | Building Blocks | CS-T-07604 | 106719-44-2 | Enquire |
| N-Boc-N’-allyloxycarbonyl-D-lysine dicyclohexyl Ammonium Sal... | Building Blocks | CS-T-68601 | 327156-94-5 | Enquire |
| Ne-Boc-D-lysine | Building Blocks | CS-T-07603 | 31202-69-4 | Enquire |
| Ne-Boc-L-lysine | Building Blocks | CS-T-07602 | 2418-95-3 | In Stock |
| Ne-Fmoc-L-lysine | Building Blocks | CS-T-74499 | 84624-28-2 | Enquire |
| N-Fmoc-N\\-Biotinyl-D-lysine | Building Blocks | CS-DV-03655 | 110990-09-5 | Enquire |
| Nα-Fmoc-D-lysine Hydrochloride | Building Blocks | CS-T-75861 | 201002-47-3 | Enquire |
| Nα-Fmoc-L-lysine | Building Blocks | CS-T-77642 | 105047-45-8 | Enquire |