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8.53041

Sigma-Aldrich

Boc-His(Tos)-OH

Novabiochem®

Synonym(s):

Boc-His(Tos)-OH, N-α-t.-Boc-N-im-tosyl-L-histidine

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About This Item

Empirical Formula (Hill Notation):
C18H23N3O6S
CAS Number:
Molecular Weight:
409.46
MDL number:
UNSPSC Code:
12352209
NACRES:
NA.22

Quality Level

product line

Novabiochem®

assay

≥98% (TLC)
≥98.0% (HPLC)

form

powder

reaction suitability

reaction type: Boc solid-phase peptide synthesis

manufacturer/tradename

Novabiochem®

application(s)

peptide synthesis

storage temp.

15-25°C

InChI

1S/C18H23N3O6S/c1-12-5-7-14(8-6-12)28(25,26)21-10-13(19-11-21)9-15(16(22)23)20-17(24)27-18(2,3)4/h5-8,10-11,15H,9H2,1-4H3,(H,20,24)(H,22,23)/t15-/m0/s1

InChI key

DCLJSEPKYJSEHW-HNNXBMFYSA-N

General description

Standard building block for introduction of histidine amino-acid residues by Boc SPPS.

Associated Protocols and Technical Articles
Cleavage and Deprotection Protocols for Boc SPPS

Literature references

[1] T. Fujii, et al. (1974) Bull. Chem. Soc. Jpn., 47, 3146.
[2] J. M. v. d. Eijk, et al. (1980) J. Org. Chem., 45, 547.

Linkage

Replaces: 04-12-0012

Analysis Note

Colour (visual): white to slight yellow to beige
Appearance of substance (visual): powder
Identity (IR): passes test
Optical rotation α 25/D (c=1 in dioxan): +10.0 - +13.0 °
Purity (TLC(011B)): ≥ 98 %
Purity (TLC(011C)): ≥ 98 %
Assay (HPLC, area%): ≥ 98.0 % (a/a)
Solubility (50 mg in ml EtOH): clearly soluble

To see the solvent systems used for TLC of Novabiochem® products please click here.

Legal Information

Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Protocols

The most popular reagent for cleavage of peptides from Boc-based resins is anhydrous HF. Of all the cleavage procedures HF appears to be the most versatile and least harmful to a wide variety of peptides synthesized on Boc-based resins.

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