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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Phenylalanine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Phenylalanine 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 Phenylalanine-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.

Phenylalanine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Acetyl-L-phenylalanine-13C6 Stable Isotopes CS-T-97058 Not Available Enquire
4-Azido-L-phenylalanine-13C9,15N Stable Isotopes CS-T-97022 Not Available Enquire
4-Bromo-N-Boc-α-methyl-D-phenylalanine-13C,d3 Stable Isotopes CS-T-100744 Not Available Enquire
4-Nitro-L-Phenylalanine-d4 Methyl Ester Hydrochloride Stable Isotopes CS-T-97264 Not Available Enquire
DL-Phenylalanine,1,1Dimethylethylester Hydrochloride-d7 Stable Isotopes CS-O-57313 Not Available In Stock
DL-Phenylalanine-d8 Stable Isotopes CS-T-84204 29909-00-0 Enquire
L-Aspartyl-L-phenylalanine-d5 Stable Isotopes CS-T-97026 Not Available Enquire
N--[4-(1-Methylethyl)benzoyl]-D-phenylalanine-d7 Stable Isotopes CS-T-100034 Not Available Enquire
N-Fmoc-D-phenylalanine-d5 Stable Isotopes CS-T-96954 2714483-74-4 No data available
N-Lactoyl Phenylalanine-d3 Stable Isotopes CS-O-60270 183241-73-8 (Unlabeled) Enquire
Octreotide-phenylalanine-d8 di-Trifluoroacetic Acid Salt Stable Isotopes CS-T-95520 83150-76-9 (Unlabelled) Enquire
1-13C-D-Phenylalanine Stable Isotopes CS-T-84020 1202063-94-2 Enquire
L-Phenylalanine tert-Butyl Ester-d5 Stable Isotopes CS-T-84196 1177315-89-7 Enquire
L-Phenylalanine-13C, N-Boc Stable Isotopes CS-CH-00142 84771-22-2 Enquire
L-Phenylalanine-carboxy-13C Stable Isotopes CS-T-84185 81201-86-7 Enquire
L-Phenylalanine-d5 Methyl Ester Hydrochloride Stable Isotopes CS-T-60374 1331897-23-4 Enquire
L-Phenylalanine-d7 Stable Isotopes CS-T-83985 69113-60-6 Enquire
L-p-Nitro(2,3,5,6-2H4)phenylalanine Stable Isotopes CS-T-83388 62595-13-5 Enquire
N-Boc-4-[bis(2-hydroxyethyl-d4)amino]-L-phenylalanine Methyl... Stable Isotopes CS-T-49491 1217602-23-7 Enquire
N-FMOC-L-phenylalanine-d8 Stable Isotopes CS-T-55002 1353853-39-0 Enquire
N-Pyrazinylcarbonyl-L-phenylalanine-d8 Stable Isotopes CS-T-85821 1331912-47-0 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Phenylalanine API CS-O-07252 63-91-2 In Stock


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-lactoyl-phenylalanine Metabolite CS-T-94475 183241-73-8 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-(hydroxymethyl)-L-Phenylalanine Impurity CS-O-56899 41679-16-7 Enquire
3,4,5-Trihydroxyphenylalanine Impurity CS-O-57868 16032-83-0 Enquire
4-Azido-L-phenylalanine Impurity CS-T-04663 33173-53-4 Enquire
4-carboxy-N-[(1,1-dimethyletho4-carboxy-N-[(1,1-dimethyletho... Impurity CS-O-44712 2762439-10-9 Enquire
4-Chloro-L-phenylalanine Impurity CS-O-13663 14173-39-8 In Stock
Bepotastine N-Acetyl phenylalanine Condensed Ether impurity Impurity CS-O-56300 ---- Enquire
N-Phthalimido 4-Nitro-L-phenylalanine Methyl Ester Impurity CS-T-84679 74743-22-9 Enquire
Phenylalanine Impurity 1 Impurity CS-O-54980 ---- Enquire
2-Chloro-L-phenylalanine Impurity CS-DL-00781 103616-89-3 Enquire
2-Methyl-D-phenylalanine Impurity CS-T-80124 80126-54-1 Enquire
3-Methyl-D-phenylalanine Impurity CS-T-81564 114926-39-5 Enquire
4-Aminophenylalanine Impurity CS-M-46761 943-80-6 Enquire
4-Borono-L-phenylalanine Impurity CS-T-07775 76410-58-7 Enquire
4-Bromo-DL-phenylalanine Impurity CS-DL-00864 14091-15-7 Enquire
4-Methylbenzenesulfonate L-Phenylalanine 2,2,2-Trichloroethy... Impurity CS-T-57982 69472-84-0 Enquire
4-Methyl-D-phenylalanine Impurity CS-T-80904 49759-61-7 Enquire
Acetyl-L-phenylalanine Ethyl Ester Impurity CS-T-01150 2361-96-8 Enquire
Dehydro Phenylalanine (cis/trans Mixture) Impurity CS-T-14965 7060-39-1 Enquire
Des-phenylalanine-Anantin Impurity CS-O-01413 133658-46-5 Enquire
Fmoc-2-nitro-L-phenylalanine Impurity CS-M-29751 210282-30-7 Enquire
Fmoc-3-(trifluoromethyl)-D-phenylalanine Impurity CS-M-29752 205526-28-9 Enquire
Fmoc-3-(trifluoromethyl)-L-phenylalanine Impurity CS-M-29753 205526-27-8 Enquire
Fmoc-3,4,5-trifluoro-D-phenylalanine Impurity CS-M-29754 205526-31-4 Enquire
Fmoc-3,4,5-trifluoro-L-phenylalanine Impurity CS-M-29755 205526-30-3 Enquire
Fmoc-3,4-dichloro-D-phenylalanine Impurity CS-M-29756 177966-58-4 Enquire
Fmoc-3,4-dichloro-L-phenylalanine Impurity CS-M-29757 177966-59-5 Enquire
Fmoc-3,4-dihydroxy-L-phenylalanine Impurity CS-M-29758 137018-93-0 Enquire
Fmoc-3,4-dimethoxy-L-phenylalanine Impurity CS-M-29759 184962-88-7 Enquire
L-2-Nitrophenylalanine Impurity CS-T-83351 19883-75-1 Enquire
L-N,N-Dibenzylphenylalanine Benzyl Ester Impurity CS-T-52488 111138-83-1 Enquire
L-Phenylalanine tert-Butyl Ester Impurity CS-T-39359 16874-17-2 Enquire
N-(trans-4-Isopropylcyclohexylcarbonyl)-D-phenylalanine-D-ph... Impurity CS-O-34662 Not Available Enquire
N,4-Diacetyl-L-phenylalanine Ethyl Ester Impurity CS-T-89141 1354641-70-5 Enquire
N-4-(1-Pyrene)butyroylglycylglycyl-L-phenylalanine Impurity CS-T-60915 228414-53-7 Enquire
N-4-(1-Pyrene)butyroyl-L-phenylalanine Ethyl Ester Impurity CS-T-60916 1331912-17-4 Enquire
Na-(2-Naphthalenesulfonylglycyl)-4-amidino-D,L-phenylalanine... Impurity CS-T-59089 86125-48-6 Enquire
N-Acetyl-3,4-dimethoxy-DL-phenylalanine Impurity CS-O-33505 27313-65-1 Enquire
N-Acetyl-3-fluorophenylalanine Impurity CS-M-46937 17607-28-2 Enquire
N-Acetyl-L-phenylalanine Impurity CS-T-01144 2018-61-3 Enquire
N-Boc-4-[bis(2-hydroxyethyl)amino]-L-phenylalanine Methyl Es... Impurity CS-T-07476 1217651-06-3 Enquire
N-Boc-4-nitro-L-phenylalanine Methyl Ester Impurity CS-T-07648 65615-89-6 Enquire
N-FMOC-L-phenylalanine Impurity CS-T-24582 35661-40-6 Enquire
N-formylphenylalanine Impurity CS-Q-00334 13200-85-6 Enquire
ß-Hydroxy-3-nitro-phenylalanine Ethyl Ester Hydrochloride (R... Impurity CS-T-78790 1219316-71-8 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Iodo-D-phenylalanine Intermediate CS-AC-03986 62561-75-5 In Stock
Boc-D-Phenylalanine Intermediate CS-T-07663 18942-49-9 In Stock
DL-Phenylalanine Intermediate CS-M-58051 150-30-1 In Stock
L-3-Chlorophenylalanine Intermediate CS-T-70814 80126-51-8 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Propargyloxy-L-phenylalanine Fine Chemicals CS-O-59774 1080496-42-9 Enquire
D-Homophenylalanine Ethyl Ester Hydrochloride Fine Chemicals CS-DJ-00147 90940-54-8 In Stock
D-Phenylalanine Fine Chemicals CS-O-00234 673-06-3 In Stock
L-Valine Fine Chemicals CS-T-46244 72-18-4 In Stock
2,4,6-Trinitro-L-Phenylalanine Fine Chemicals CS-P-08241 Not Available Enquire
2,4-Dimethoxy-DL-phenylalanine Fine Chemicals CS-DJ-00170 91248-17-8 Enquire
2,5-Dimethoxy-DL-phenylalanine Fine Chemicals CS-DJ-00172 91280-31-8 Enquire
2-phenylalanine Fine Chemicals CS-Q-00625 565-07-1 Enquire
4-Borono-DL-phenylalanine Fine Chemicals CS-M-03070 90580-64-6 Enquire
DL-2,3-Difluorophenylalanine Fine Chemicals CS-M-01608 236754-62-4 Enquire
DL-2,4-Difluorophenylalanine Fine Chemicals CS-M-01609 32133-35-0 Enquire
DL-2,5-Difluorophenylalanine Fine Chemicals CS-M-01610 32133-38-3 Enquire
DL-2,6-Difluorophenylalanine Fine Chemicals CS-M-01624 33787-05-2 Enquire
DL-3,4-Difluorophenylalanine Fine Chemicals CS-M-01611 32133-36-1 Enquire
DL-3,5-Difluorophenylalanine Fine Chemicals CS-M-01612 32133-37-2 Enquire
DL-3-Fluorophenylalanine Fine Chemicals CS-M-02831 2629-54-1 Enquire
D-Phenylalanine tert-Butyl Ester Fine Chemicals CS-T-39367 6404-30-4 Enquire
L-Phenylalanine, L-leucyl-, methyl ester, 2,2,2-trifluoroace... Fine Chemicals CS-O-37222 90072-18-7 Enquire
L-tyrosine diethylamide Fine Chemicals CS-O-40777 Not Available Enquire
Phenylalanine isopentylamide Fine Chemicals CS-O-39725 110755-29-8 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(aS)-a-[[(1,1-Dimethylethoxy)carbonyl]amino]benzenebutanoyl-... Building Blocks CS-T-102284 868540-15-2 Enquire
2-Chloro-N-Fmoc-DL-phenyLalanine Building Blocks CS-ED-41801 678991-52-1 Enquire
4-Nitro-L-Phenylalanine Methyl Ester Hydrochloride Building Blocks CS-O-20029 17193-40-7 In Stock
Boc-3-bromo-L-phenylalanine Building Blocks CS-M-29682 82278-73-7 In Stock
2-(Trifluoromethyl)-DL-phenylalanine Building Blocks CS-M-02432 3832-73-3 Enquire
2-Fluoro-L-phenylalanine Building Blocks CS-T-74400 19883-78-4 Enquire
2-Fluoro-L-phenylalanine, N-BOC protected Building Blocks CS-CE-00119 114873-00-6 Enquire
3-(Trifluoromethyl)-DL-phenylalanine Building Blocks CS-M-02433 63701-37-1 Enquire
3-(Trifluoromethyl)-L-phenylalanine Building Blocks CS-M-04888 14464-68-7 Enquire
3,4,5-Trifluoro-DL-phenylalanine Building Blocks CS-M-01483 261952-26-5 Enquire
3-Fluoro-L-phenylalanine Building Blocks CS-T-76577 19883-77-3 Enquire
4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-L-phenylalan... Building Blocks CS-O-43549 1060765-21-0 Enquire
4-(Trifluoromethyl)-DL-phenylalanine Building Blocks CS-M-02442 14091-16-8 Enquire
4-(Trifluoromethyl)-L-phenylalanine Building Blocks CS-CE-00075 114926-38-4 Enquire
4-[(2-Chloroethyl)amino]-N-[(1,1-dimethylethoxy)carbonyl]-L-... Building Blocks CS-T-69848 1374033-38-1 Enquire
4-Borono-D-phenylalanine Building Blocks CS-M-03071 111821-49-9 Enquire
4-Fluoro-L-phenylalanine Building Blocks CS-T-77010 1132-68-9 Enquire
4-Fluoro-L-phenylalanine methyl ester, HCl Building Blocks CS-T-75005 64231-55-6 Enquire
4-Nitro-L-phenylalanine Building Blocks CS-M-52787 949-99-5 Enquire
4-tert-Butyloxycarbonyl-L-phenylalanine Building Blocks CS-T-68833 218962-77-7 Enquire
Alpha-methyl-l-4-fluorophenylalanine Building Blocks CS-T-76825 130855-57-1 Enquire
Boc-2-(trifluoromethyl)-D-phenylalanine Building Blocks CS-M-29655 346694-78-8 Enquire
Boc-2-(trifluoromethyl)-L-phenylalanine Building Blocks CS-M-29656 167993-21-7 Enquire
Boc-2,4-dichloro-D-phenylalanine Building Blocks CS-M-29657 114873-12-0 Enquire
Boc-2,4-dichloro-L-phenylalanine Building Blocks CS-M-29658 114873-04-0 Enquire
Boc-2-bromo-D-phenylalanine Building Blocks CS-M-29659 261360-76-3 Enquire
Boc-2-bromo-L-phenylalanine Building Blocks CS-M-29660 261165-02-0 Enquire
Boc-2-chloro-D-phenylalanine Building Blocks CS-M-29661 80102-23-4 Enquire
Boc-2-chloro-L-phenylalanine Building Blocks CS-M-29662 114873-02-8 Enquire
Boc-2-cyano-D-phenylalanine Building Blocks CS-M-29663 261380-28-3 Enquire
Boc-2-cyano-L-phenylalanine Building Blocks CS-M-29664 216312-53-7 Enquire
Boc-2-iodo-L-phenylalanine Building Blocks CS-T-68441 273221-78-6 Enquire
Boc-2-methyl-D-phenylalanine Building Blocks CS-M-29665 80102-29-0 Enquire
Boc-2-methyl-L-phenylalanine Building Blocks CS-M-29666 114873-05-1 Enquire
Boc-2-nitro-D-phenylalanine Building Blocks CS-M-29667 478183-69-6 Enquire
Boc-2-nitro-L-phenylalanine Building Blocks CS-M-29668 185146-84-3 Enquire
Boc-3-(trifluoromethyl)-D-phenylalanine Building Blocks CS-M-29669 82317-82-6 Enquire
Boc-3-(trifluoromethyl)-L-phenylalanine Building Blocks CS-M-29670 142995-31-1 Enquire
Boc-3,4,5-trifluoro-D-phenylalanine Building Blocks CS-M-29671 205445-55-2 Enquire
Boc-3,4,5-trifluoro-L-phenylalanine Building Blocks CS-M-29672 205445-54-1 Enquire
Boc-3,4-dichloro-D-phenylalanine Building Blocks CS-M-29673 114873-13-1 Enquire
Boc-3,4-dichloro-L-phenylalanine Building Blocks CS-M-29674 80741-39-5 Enquire
Boc-3,4-dihydroxy-L-phenylalanine Building Blocks CS-M-29675 30033-24-0 Enquire
Boc-3,4-dimethoxy-L-phenylalanine Building Blocks CS-M-29676 127095-97-0 Enquire
Boc-3-bromo-D-phenylalanine Building Blocks CS-M-29681 261360-77-4 Enquire
Boc-3-chloro-D-phenylalanine Building Blocks CS-M-29683 80102-25-6 Enquire
Boc-3-chloro-L-phenylalanine Building Blocks CS-M-29684 114873-03-9 Enquire
Boc-3-cyano-D-phenylalanine Building Blocks CS-M-29686 205445-56-3 Enquire
Boc-3-cyano-L-phenylalanine Building Blocks CS-M-29687 131980-30-8 Enquire
Boc-3-fluoro-D-phenylalanine Building Blocks CS-M-29689 114873-11-9 Enquire
Boc-3-fluoro-L-phenylalanine Building Blocks CS-M-29690 114873-01-7 Enquire
Boc-3-iodo-L-phenylalanine Building Blocks CS-M-29691 273221-75-3 Enquire
Boc-3-methyl-D-phenylalanine Building Blocks CS-M-29694 114873-14-2 Enquire
Boc-3-methyl-L-phenylalanine Building Blocks CS-M-29695 114873-06-2 Enquire
Boc-4-acetyl-l-phenylalanine Building Blocks CS-T-67160 204856-73-5 Enquire
Boc-4-methyl-L-phenylalanine Building Blocks CS-M-29716 80102-26-7 Enquire
Boc-4-nitro-D-phenylalanine Building Blocks CS-M-29717 61280-75-9 Enquire
Boc-4-nitro-L-phenylalanine Building Blocks CS-M-29718 33305-77-0 Enquire
Boc-5-bromo-2-methoxy-D-phenylalanine Building Blocks CS-M-29719 261380-17-0 Enquire
Boc-5-bromo-2-methoxy-L-phenylalanine Building Blocks CS-M-29720 261165-03-1 Enquire
Boc-a-methyl-D-phenylalanine Building Blocks CS-M-29724 53940-88-8 Enquire
Boc-a-methyl-L-phenylalanine Building Blocks CS-M-29725 111771-58-5 Enquire
BOC-D-2-Fluorophenylalanine Building Blocks CS-M-01908 114873-10-8 Enquire
BOC-D-4-Fluorophenylalanine Building Blocks CS-M-01907 57292-45-2 Enquire
Boc-D-homophenylalanine Building Blocks CS-M-29727 82732-07-8 Enquire
Boc-D-Phenylalanine methyl ester Building Blocks CS-DV-03493 77119-84-7 Enquire
Boc-D-ß-phenylalanine Building Blocks CS-M-30027 103365-47-5 Enquire
Boc-L-homophenylalanine Building Blocks CS-O-11252 100564-78-1 Enquire
DL-Phenylalanine-4-sulfofluoride hydrochloride Building Blocks CS-O-43483 1184173-25-8 Enquire
D-Pentafluorophenylalanine, N-FMOC protected Building Blocks CS-CE-00152 198545-85-6 Enquire
D-Phenylalanine-4-sulfofluoride hydrochloride Building Blocks CS-O-43485 1184173-19-0 Enquire
Fmoc-2-(trifluoromethyl)-D-phenylalanine Building Blocks CS-M-29738 352523-15-0 Enquire
Fmoc-2-(trifluoromethyl)-L-phenylalanine Building Blocks CS-M-29739 352523-16-1 Enquire
Fmoc-2,4-dichloro-D-phenylalanine Building Blocks CS-M-29740 352351-61-2 Enquire
Fmoc-2,4-dichloro-L-phenylalanine Building Blocks CS-M-29741 352351-62-3 Enquire
Fmoc-2-bromo-D-phenylalanine Building Blocks CS-M-29742 220497-79-0 Enquire
Fmoc-2-bromo-L-phenylalanine Building Blocks CS-M-29743 220497-47-2 Enquire
Fmoc-2-chloro-D-phenylalanine Building Blocks CS-M-29744 205526-22-3 Enquire
Fmoc-2-chloro-L-phenylalanine Building Blocks CS-M-29745 198560-41-7 Enquire
Fmoc-2-cyano-D-phenylalanine Building Blocks CS-M-29746 401620-74-4 Enquire
Fmoc-2-cyano-L-phenylalanine Building Blocks CS-M-29747 401933-16-2 Enquire
Fmoc-2-iodo-l-phenylalanine Building Blocks CS-T-77235 210282-32-9 Enquire
Fmoc-2-methyl-D-phenylalanine Building Blocks CS-M-29748 352351-63-4 Enquire
Fmoc-2-methyl-L-phenylalanine Building Blocks CS-M-29749 211637-75-1 Enquire
Fmoc-2-nitro-D-phenylalanine Building Blocks CS-M-29750 478183-70-9 Enquire
Fmoc-3-bromo-D-phenylalanine Building Blocks CS-M-29764 220497-81-4 Enquire
Fmoc-3-bromo-L-phenylalanine Building Blocks CS-M-29765 220497-48-3 Enquire
Fmoc-3-chloro-D-phenylalanine Building Blocks CS-M-29766 205526-23-4 Enquire
Fmoc-3-chloro-L-phenylalanine Building Blocks CS-M-29767 198560-44-0 Enquire
Fmoc-3-cyano-D-phenylalanine Building Blocks CS-M-29769 205526-37-0 Enquire
Fmoc-3-cyano-L-phenylalanine Building Blocks CS-M-29770 205526-36-9 Enquire
Fmoc-3-fluoro-D-phenylalanine Building Blocks CS-M-29772 198545-72-1 Enquire
Fmoc-3-fluoro-L-phenylalanine Building Blocks CS-M-29773 198560-68-8 Enquire
Fmoc-3-iodo-D-phenylalanine Building Blocks CS-M-29774 478183-67-4 Enquire
Fmoc-3-iodo-L-phenylalanine Building Blocks CS-M-29775 210282-31-8 Enquire
Fmoc-3-methyl-D-phenylalanine Building Blocks CS-M-29777 352351-64-5 Enquire
Fmoc-3-methyl-L-phenylalanine Building Blocks CS-M-29778 211637-74-0 Enquire
Fmoc-3-nitro-D-phenylalanine Building Blocks CS-M-29779 478183-71-0 Enquire
Fmoc-3-nitro-L-phenylalanine Building Blocks CS-M-29780 206060-42-6 Enquire
Fmoc-4-(Boc-amino)-D-phenylalanine Building Blocks CS-M-29782 214750-77-3 Enquire


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Leucyl-L-phenylalanine Pesticide Standards CS-O-51622 3063-05-6 Enquire
Phenylalanine betaine Pesticide Standards CS-BT-00499 56755-22-7 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso-N-methyl-DL-phenylalanine Nitrosamine CS-T-59545 41867-08-7 Enquire
N-Nitroso-N-methyl-L-phenylalanine Nitrosamine CS-O-39972 90988-28-6 Enquire