Reagents, L

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  • L-Ornithine methyl ester dihydrochloride ; 99%

    AFG Bioscience

    Synonyms: L-Orn-OMe·2HCl Purity Limit: 99% CAS No.: 40216-82-8 Molecular Formula: C6H14N2O2·2HCl Molecular Weight: 219.12 MDL No.: MFCD00190977 Storage Temperature: Store at 0-8°C

  • L-Thyroxine ; >/= 98%

    AFG Bioscience

    Synonyms: (S)-2-Amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propionic acid 3,3',5,5'-Tetraiodo-L-thyronin 3-[4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]-L-alanine Purity Limit: ≥ 98% CAS No.: 51-48-9 Molecular Formula: C15H11I4NO4 Molecular Weight: 776.86 MDL…

  • L-Tyrosine benzyl ester ; >/= 98% (HPLC)

    AFG Bioscience

    Synonyms: L-Tyr-OBzl Purity Limit: ≥ 98% (HPLC) CAS No.: 42406-77-9 Molecular Formula: C16H17NO3 Molecular Weight: 271.30 MDL No.: MFCD00191034 Appearance: White powder Melting Point: 119-124 ºC Optical Rotation: [a]D20 = -13 ± 2º (C=2 in MeOH) Storage Temperature: …

  • Lanthanum(III) acetate hydrate ; 99%

    AFG Bioscience

    Purity Limit: 99% CAS No.: 100587-90-4 Molecular Formula: C6H9O6La·XH2O Molecular Weight: 316.05 MDL No.: MFCD00150118 Storage Temperature: Store at RT

  • L-Propargylglycine ; >/= 99% (HPLC, Chiral purity)

    AFG Bioscience

    Synonyms: L-Pra-OHL-Propargyl-Gly-OH(S)-2-Amino-4-pentynoic acid Purity Limit: ≥ 99% (HPLC, Chiral purity) CAS No.: 23235-01-0 Molecular Formula: C5H7NO2 Molecular Weight: 113.10 MDL No.: MFCD00077855 Appearance: White powder Storage Temperature: Store at 0-8 °C

  • L-Histidine ; >/= 99%

    AFG Bioscience

    Synonyms: L-His-OH Purity Limit: ≥ 99% CAS No.: 71-00-1 Molecular Formula: C6H9N3O2 Molecular Weight: 155.2 MDL No.: MFCD00064315 Appearance: White crystals or crystalline powder Melting Point: 282°C (dec) Optical Rotation: [a]20D = + 12 ± 2 º Storage Temperature: …

  • Leishman Stain ;

    AFG Bioscience

    Synonyms: Eosin Methylene blue according to Leishman Methylene blue-eosin Leishman Purity Limit: ≤ 8% CAS No.: 12627-53-1 Molecular Weight: 0 MDL No.: MFCD00131498 Appearance: Dark green powder Storage Temperature: Store at RT

  • L-Leucine 4-nitrophenyl ester hydrochloride ; >/= 98% (HPLC)

    AFG Bioscience

    Synonyms: L-Leu-ONp·HCl(S)-2-Amino-4-methyl-pentanoic acid 4-nitrophenyl ester Purity Limit: ≥ 98% (HPLC) CAS No.: 71989-25-8 (net.) Molecular Formula: C12H16N2O4·HCl Molecular Weight: 288.68 MDL No.: MFCD00270558 Appearance: Off-white powder Melting Point: > 176 °C (dec.) …

  • L-Alanine ; USP ; 98.5-101.5% (Titration: anhydrous basis)

    AFG Bioscience

    Synonyms: L-Ala-OH(S)-2-Aminopropanoic acid Grade: USP Purity Limit: 98.5-101.5% (Titration: anhydrous basis) CAS No.: 56-41-7 Molecular Formula: C3H7NO2 Molecular Weight: 89.09 MDL No.: MFCD00064410 Appearance: White crystals or crystalline powder Optical Rotation: +13.7…

  • L-Tryptophan amide hydrochloride ; >/= 98% (HPLC)

    AFG Bioscience

    Synonyms: L-Trp-NH2·HCl Purity Limit: ≥ 98% (HPLC) CAS No.: 5022-65-1 Molecular Formula: C11H13N3O·HCl Molecular Weight: 239.7 MDL No.: MFCD00054315 Appearance: White to off white powder Melting Point: 250-254º C Optical Rotation: [a]20D = +25.00 ± 1º (c=1 in H2O) …

  • L-2-Cyclohexylglycine hydrochloride

    AFG Bioscience

    Synonyms: L-Chg-OH·HCl H-Cyclohexyl-L-Gly-OH·HCl (S)-Cyclohexylglycine hydrochloride CAS No.: 14328-51-9 Molecular Formula: C8H15NO2·HCl Molecular Weight: 193.7 MDL No.: MFCD00050539 Storage Temperature: Store at 0-8°C

  • L-a-Glycerophosphorylcholine (from egg yolk) ; >/= 99% (Assay)

    AFG Bioscience

    Purity Limit: ≥ 99% (Assay) CAS No.: 28319-77-9 Molecular Formula: C8H20NO6P Molecular Weight: 257.2 MDL No.: MFCD00063544 Appearance: Lyophilized white powder Optical Rotation: [a]D20 = -3 ± 2º Storage Temperature: Store at ≤ -4 °C

  • L-Threonine benzyl ester oxalate(1:1)

    AFG Bioscience

    Synonyms: L-Thr-OBzl·oxalate(1:1) CAS No.: 201274-07-9 Molecular Formula: C11H15NO3·C2H2O4 Molecular Weight: 299.3 MDL No.: MFCD02259509 Storage Temperature: Store at 0-8°C

  • L-Lysine hydrate ; >/= 99% (Titration)

    AFG Bioscience

    Synonyms: L-Lys-OH·H2O(S)-2,6-Diaminohexanoic acid monohydrate Purity Limit: ≥ 99% (Titration) CAS No.: 39665-12-8 Molecular Formula: C6H14N2O2·H2O Molecular Weight: 164.2 MDL No.: MFCD00151035 Appearance: White or yellow crystalline powder Optical Rotation: [a]D20 = +24 ±…

  • L-Lysine amide dihydrochloride ; >/= 95%

    AFG Bioscience

    Synonyms: L-Lys-NH2·2HCl Purity Limit: ≥ 95% CAS No.: 51127-08-3 Molecular Formula: C6H15N3O·2HCl Molecular Weight: 218.2 MDL No.: MFCD00058287 Appearance: White to off-white powder Storage Temperature: Store at 0-8°C

  • L-Ribose ; >/= 98% (Assay)

    AFG Bioscience

    Synonyms: L-Ribofuranose(2S,3S,4S)-2,3,4,5-Tetrahydroxypentanal Purity Limit: ≥ 98% (Assay) CAS No.: 24259-59-4 Molecular Formula: C5H10O5 Molecular Weight: 150.13 MDL No.: MFCD00167010 Appearance: White to almost white powder Storage Temperature: Store at 0-8 °C

  • L-Cystine bis(tert-butyl ester) dihydrochloride ; >/= 97% (TLC)

    AFG Bioscience

    Synonyms: (H-L-Cys-OtBu)2·2HCl Purity Limit: ≥ 97% (TLC) CAS No.: 38261-78-8 Molecular Formula: C14H28N2O4S2·2HCl Molecular Weight: 425.44 MDL No.: MFCD00237452 Appearance: White solid Optical Rotation: [a]D20 = -98 ± 2º (C=1 in H2O) Storage Temperature: Store at 0-8 °C

  • L-Ornithine-a-ketoglutarate ; 99+%

    AFG Bioscience

    Synonyms: L-Ornithine 2-oxoglutarate Purity Limit: 99+% CAS No.: 5191-97-9 Molecular Formula: C5H12N2O2·C5H6O5 Molecular Weight: 278.26 MDL No.: MFCD00216457 Appearance: Crystalline powder Storage Temperature: Store at 0-8°C

  • Lithium tetraborate ; ACS reagent ; 98.0-102.0% (Titration)

    AFG Bioscience

    Synonyms: Di-Lithium tetraborate Grade: ACS reagent Purity Limit: 98.0-102.0% (Titration) CAS No.: 12007-60-2 Molecular Formula: B4O7·2Li Molecular Weight: 169.12 MDL No.: MFCD00011083 Appearance: White solid Comments: It is used in flux. Storage Temperature: Store at RT

  • Lithium sulfate, anhydrous ; >/= 99% (Assay)

    AFG Bioscience

    Purity Limit: ≥ 99% (Assay) CAS No.: 10377-48-7 Molecular Formula: Li2SO4 Molecular Weight: 109.94 MDL No.: MFCD00011086 Appearance: White granular powder Storage Temperature: Store at RT

  • Lithium acetate ; >/= 98%

    AFG Bioscience

    Synonyms: Acetic acid lithium salt Purity Limit: ≥98% CAS No.: 546-89-4 Molecular Formula: C2H3LiO2 Molecular Weight: 65.98 MDL No.: MFCD00013057 Storage Temperature: Store at RT

  • Leu-Ser-Phe-OH

    AFG Bioscience

    Molecular Formula: C18H27N3O5 Molecular Weight: 365.43 MDL No.: MFCD00057836 Storage Temperature: Store at ≤-4°C

  • L-Methionine amide hydrochloride ; >/= 99% (HPLC)

    AFG Bioscience

    Synonyms: L-Met-NH2·HCl Purity Limit: ≥ 99% (HPLC) CAS No.: 16120-92-6 Molecular Formula: C5H12N2OS·HCl Molecular Weight: 184.69 MDL No.: MFCD00039084 Appearance: White powder Optical Rotation: [a]D20 = +17 ± 2º (C=2 in 1N HCl) Storage Temperature: Store at 0-8 °C

  • L-Leucine a-naphthylamide ; >/= 98% (TLC)

    AFG Bioscience

    Synonyms: L-Leu-aNA Purity Limit: ≥ 98% (TLC) CAS No.: 203793-55-9 Molecular Formula: C16H20N2O Molecular Weight: 256.35 MDL No.: MFCD00083643 Comments: Substrate for a histochemical assay of aminopeptidase M. Melting Point: 79-85 °C Optical Rotation: [a]D24 = +12 ± 2º…

  • L-Phenylalanine amide hydrochloride ; >/= 99% (HPLC)

    AFG Bioscience

    Synonyms: L-Phe-NH2·HCl Purity Limit: ≥ 99% (HPLC) CAS No.: 65864-22-4 Molecular Formula: C9H12N2O·HCl Molecular Weight: 200.7 MDL No.: MFCD00039083 Appearance: White powder Melting Point: 231-236 °C Optical Rotation: [a]D20 = +30.4 ± 2º (C=1 in DMF) Storage…

  • L-Tryptophan tert-butyl ester hydrochloride ; >/= 95% (HPLC)

    AFG Bioscience

    Synonyms: L-Trp-OtBu·HCl Purity Limit: ≥ 95% (HPLC) CAS No.: 16874-09-2 Molecular Formula: C15H20N2O2·HCl Molecular Weight: 296.7 MDL No.: MFCD00238204 Appearance: White powder Optical Rotation: [a]D25 = +18 ± 2º (C=1 in MeOH) Storage Temperature: Store at 0-8 °C

  • L-Proline-2-chlorotrityl resin

    AFG Bioscience

    Synonyms: L-Pro-2-chlorotrityl resin MDL No.: MFCD00801415 Comments: An excellent resin for the synthesis of peptides containing C-terminal Pro without risk of diketopiperazine formation. DVB: 1% DVB Mesh Size: 100-200 Storage Temperature: Store at 0-8 °C Substitution: 0.3-1.2 meq/g

  • Leu-Gly-Leu-OH

    AFG Bioscience

    Synonyms: L-Leucylglycyl-L-leucine H2N-LGL-OH Molecular Formula: C14H27N3O4 Molecular Weight: 301.39 MDL No.: MFCD00038310 Storage Temperature: Store at ≤-4°C

  • L-Tyrosine 4-nitroanilide ; >/= 99% (HPLC)

    AFG Bioscience

    Synonyms: L-Tyr-pNA Purity Limit: ≥ 99% (HPLC) CAS No.: 52551-07-2 Molecular Formula: C15H15N3O4 Molecular Weight: 301.3 MDL No.: MFCD00155550 Appearance: Yellow crystalline powder Melting Point: 200-206 °C Optical Rotation: [a]D20 = +146.4 ± 4º (C=1 in 80% AcOH) …

  • L-Asparagine amide hydrochloride

    AFG Bioscience

    Synonyms: L-Asn-NH2·HCl CAS No.: 57471-69-9 Molecular Formula: C4H9N3O2·HCl Molecular Weight: 167.63 MDL No.: MFCD00077102 Storage Temperature: Store at 0-8°C

  • L-Valine methyl ester hydrochloride ; 99%

    AFG Bioscience

    Synonyms: L-Val-OMe·HCl Purity Limit: 99% CAS No.: 6306-52-1 Molecular Formula: C6H13NO2·HCl Molecular Weight: 167.6 MDL No.: MFCD00012497 Appearance: Crystalline Melting Point: 171-173°C Storage Temperature: Store at RT

  • L-a-Methylproline ; >/= 98% (NMR)

    AFG Bioscience

    Synonyms: a-Me-L-Pro-OH(S)-2-Methyl-2-pyrrolidinecarboxylic acid Purity Limit: ≥ 98% (NMR) CAS No.: 42856-71-3 Molecular Formula: C6H11NO2 Molecular Weight: 129.16 MDL No.: MFCD01318647 Appearance: White to off-white powder Optical Rotation: [a]D20 = -73.0 ± 3º (C=1 in…

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