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No.	Products	CAS No.	Application
1	Fmoc-Arg(Pbf)-OH	154445-77-9	Most peptides
2	Fmoc-Asn(Trt)-OH	132388-59-1	Most peptides
3	Fmoc-Asp(OtBu)-OH	71989-14-5	Most peptides

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Product Description

Fmoc Amino Acids Technical Specifications

No.	Products	CAS No.	Application	Key Indicator of Quality
No.	Products	CAS No.	Application	Purity (HPLC)	Isomer	Specific Impurity	Moisture
1	Fmoc-Ala-OH·H₂O	35661-39-3	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤2.0%
2	Fmoc-Arg(Pbf)-OH	154445-77-9	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
3	Fmoc-Asn(Trt)-OH	132388-59-1	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
4	Fmoc-Asp(OtBu)-OH	71989-14-5	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
5	Fmoc-Cys(Trt)-OH	103213-32-7	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
6	Fmoc-Gln(Trt)-OH	132327-80-1	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤2.0%
7	Fmoc-Glu(OtBu)-OH·H₂O	204251-24-1	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤5.0%
8	Fmoc-Gly-OH	29022-11-5	Most peptides	≥99.5%	/	≤0.1%	≤1.0%
9	Fmoc-His(Trt)-OH	109425-51-6	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
10	Fmoc-Ile-OH	71989-23-6	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
11	Fmoc-Leu-OH	35661-60-0	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
12	Fmoc-Lys(Boc)-OH	71989-26-9	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
13	Fmoc-Met-OH	71989-28-1	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
14	Fmoc-Phe-OH	35661-40-6	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
15	Fmoc-Pro-OH·H₂O	71989-31-6	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤6.0%
16	Fmoc-Ser(tBu)-OH	71989-33-8	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
17	Fmoc-Thr(tBu)-OH	71989-35-0	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
18	Fmoc-Trp(Boc)-OH	143824-78-6	Most peptides	≥99.0%	≤0.1%	≤0.3%	≤2.0%
19	Fmoc-Tyr(tBu)-OH	71989-38-3	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%
20	Fmoc-Val-OH	68858-20-8	Most peptides	≥99.5%	≤0.1%	≤0.1%	≤1.0%

Quality Control & Solvent Standards

Acetic Acid

≤0.02% (All Products)

Ethyl Acetate

≤0.5% (All Products)

Alcohol Limit

≤0.5% (All Products)

Max Unknown Impurity

Fmoc-Trp(Boc)-OH (143824-78-6) ≤0.3%; Others ≤0.2%

Frequently Asked Questions (FAQ)

What is the standard purity level for these Fmoc amino acids?

Most of our Fmoc amino acid derivatives maintain an HPLC purity of ≥99.5%. Specific items such as Fmoc-Trp(Boc)-OH carry a guaranteed purity standard of ≥99.0%.

What are the primary applications of these products?

These Fmoc-protected amino acids are widely used in solid-phase peptide synthesis (SPPS) and the commercial production of most synthetic peptides and pharmaceutical intermediates.

What residual solvent controls are implemented across the product line?

Strict residual solvent thresholds are enforced across all products: Acetic Acid is kept at ≤0.02%, Ethyl Acetate at ≤0.5%, and Alcohol content at ≤0.5%.

How are optical isomer impurities controlled?

Enantiomeric purity is rigorously maintained, with optical isomer content controlled to ≤0.1% for chiral amino acids. Fmoc-Gly-OH, being non-chiral, has no isomer specification.

Why do moisture specifications differ between certain Fmoc products?

Moisture limits depend on the structural form of the derivative. Standard anhydrous forms maintain ≤1.0% moisture, while hydrated forms like Fmoc-Glu(OtBu)-OH·H₂O (≤5.0%) and Fmoc-Pro-OH·H₂O (≤6.0%) accommodate bound water content.