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Product Name: (S)-1-Boc-3-hydroxypiperidine CAS: 143900-44-1 MF: C10H19NO3 MW: 201.26 Specifications: Appearance/colourWhite to off-white solid It could be agglomerate after storing long times Identity(IR)Corresponds Assay(HPLC w/w)97.0%-103.0% Chemical purity (GC area)﹥ ﹦ 99.0% Impurity purity (GC w/w)3-Hydroxypiperidine﹤ ﹦ 0.1% 3-Hydroxypyridine﹤ ﹦ 0.20%Not Detected 1-Boc-3-piperidone﹤ ﹦ 0.10%Not Detected 1-Boc-4-hydroxypiperidine﹤ ﹦ 0.10%Not Detected 1.96RRT﹤ ﹦ 0.2%Not Detected Any Unspecified impurity﹤ ﹦ 0.08%0.01% Chiral purity(HPLC area)﹥ ﹦ 99.5% Methanol(GC)﹤ ﹦ 50ppm Ethanol(GC)﹤ ﹦ 50ppm DCM(GC)﹤ ﹦ 500ppm Water (KF vol w/w)﹤ ﹦ 0.5%

Tert-butyl (R)-3-(hydroxymethyl) piperazine-1-carboxylate Other Name: (R)-1-Boc-3-hydroxymethylpiperazine CAS: 278788-66-2 Molecular Formula: C10H20N2O3 Molecular Weight: 216.277 Specifications: Appearance/colourOff-white and little pink Chemical purity (GC area)≥98.0% Chiral purity (HPLC area)≥99.0% Water (KF)≤0.5%

Name: tert-butyl 4-(aminomethyl)piperidine-1-carboxylate Other Name: 1-Boc-4-Aminomethylpiperidine CAS: 144222-22-0 Molecular Formula: C11H22N2O2 Molecular Weight: 214.305 Specifications: 1 Appearance: Molten solid white 2 NMR : Corresponds (we can offer the NMR photograph) 3 Chemical purity(GC area: ) ≥98.0% 4 Water(K.F vol): ≤0.5%

Name: L-serine benzyl ester hydrochloride Other Name: H-Ser-OBzl . HCl CAS: 60022-62-0 Purity: above 97% Molecular Formula: C10H14ClNO3 Molecular Weight: 231.676 Specifications: 1. Appearance/colour Off-white to White powder 2. Identification by HPLC Corresponds 3. Chemical purity(HPLC area) ≥97.0% 4. Assay(Titration w/w ) 98.0%~103.0% 5. Water（vol %w/w) ≤1.0%

Name: Fmoc-Lys-OH CAS: 105047-45-8 Molecular Formula: C21H24N2O4 Molecular Weight: 368.426 Specifications: Chemical Purity by GC: above 98% Chiral Purity: above 99% Water content: below 0.5%

Name: 4-Aminopyrazolo[3,4-d]pyrimidine CAS: 2380-63-4 MF: C5H5N5 MW: 135.13 EINECS: 219-174-6 Product Categories: Heterocyclic Compounds;Heterocycles;PYRIMIDINE;Pyridines, Pyrimidines, Purines and Pteredines;Heterocycle-Pyrimidine series Specifications: Appearance/color: Off-white to brown color solid Identification by HPLC: Corresponds Chemical purity(HPLC area): ≥98.0% Water (KF): ≤0.5%

Name: (R)-1-N-Boc-2-methylpiperazine CAS: 170033-47-3 Molecular Formula: C10H20N2O2 Molecular Weight: 200.28 Specifications: Chemical purity by GC: Above 98% Chiral purity: Above 99% Water Content: 0.5%

Name: (R)-(+)-2-Tetrahydrofuroic acid CAS: 87392-05-0 Molecular Formula: C5H8O3 Molecular Weight: 116.115 Specification: 1 Appearance/colour: Colorless or Light-yellow liquid 2 Chemical purity(GC area): >= 99.0% 3 Chiral purity(HPLC area): >= 99.0% 4 Water (KF): <= 0.5%

Name: N-Boc-3-pyrrolidinol CAS: 109431-87-0 Molecular Formula: C9H17NO3 Molecular Weight: 187.24 Synonyms 1-Boc-3-hydroxypyrrolidine 1-Pyrrolidinecarboxylic acid, 3-hydroxy-, 1,1-dimethylethyl ester N-Boc-3-pyrrolidinol tert-butyl 3-hydroxypyrrolidine-1-carboxylate tert-Butyl-3-hydroxypyrrolidin-1-carboxylat N-Boc-3-Hydroxypyrrolidine CAS 109431-87-0

Name: (S)-1,4-Diboc-2-Piperazine-2-Carboxylic Acid CAS: 788799-69-9 Molecular Formula: C15H26N2O6 Molecular Weight: 330.377