Phenylalanine impurities and related standards
20 reference standards related to Phenylalanine held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
In this group: 10 pharmaceutical intermediates · 4 drug metabolite standards · 3 stable isotope labelled standards · 2 impurity reference standards. CAS numbers are listed for 20 of 20; 20 entries carry a structure drawing.
On this page
20 reference standards
All entries — structure, identifiers and pack sizes
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1-13C-D-Phenylalanine
COA per lot -
3,4,5-Trihydroxyphenylalanine
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4-Iodo-D-phenylalanine
COA per lot -
4-Nitro-L-phenylalanine monohydrate
COA per lot -
Boc-2-cyano-D-phenylalanine
COA per lot -
D-Homophenylalanine Ethyl Ester Hydrochloride
COA per lot -
D-Phenylalanine tert-Butyl Ester Hydrochloride
COA per lot -
Diphenylalanine
COA per lot -
Fmoc-4-chloro-L-phenylalanine
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Fmoc-L-3,3-diphenylalanine
COA per lot -
Fmoc-l-4,4’-biphenylalanine
COA per lot -
Fmoc-ß-methyl-DL-phenylalanine
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L-Phenylalanine ethyl ester hydrochloride
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L-Phenylalanine tert-Butyl Ester Hydrochloride
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L-Phenylalanine tert-Butyl Ester-d5
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L-Phenylalanine-d5 Methyl Ester Hydrochloride
COA per lot -
N-Boc-4-nitro-L-phenylalanine Methyl Ester
COA per lot
![Chemical structure of N-Boc-4-[bis(2-hydroxyethyl)amino]-L-phenylalanine Methyl Ester](/structures/w2/JBFUXXJVFIHVIF-UHFFFAOYSA-N.webp)
20 reference standards
Frequently asked
How many Phenylalanine-related reference standards do you hold?
20 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 20 of them and 20 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Phenylalanine impurity that is not listed here?
Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.
What documentation is supplied with Phenylalanine impurities?
Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.
Do you publish prices or a lead time for Phenylalanine impurities?
No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.
Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to sales@rssechem.com.