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Detail of "17791-52-5"

  • CAS Number:
  • 17791-52-5
  • Name:

  • L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-

  • Superlist Name:
  • N-Boc-L-Histidine
  • Molecular Structure:
  • Formula:
  • C11H17N3O4
  • Molecular Weight:
  • 255.27
  • Synonyms:
  • Boc-His-OH;Histidine,N-carboxy-, N-tert-butyl ester (7CI);Histidine, N-carboxy-, N-tert-butylester, L- (8CI);(tert-Butoxycarbonyl)-L-histidine;N-tert-Butoxycarbonyl-L-histidine;NSC 334942;Na-(tert-Butyloxycarbonyl)-L-histidine;tert-Butyloxycarbonyl-L-histidine;
  • EINECS:
  • 241-768-9
  • Density:
  • 1.275 g/cm3
  • Melting Point:
  • 195 °C (dec.)(lit.)
  • Boiling Point:
  • 522.2 °C at 760 mmHg
  • Flash Point:
  • 269.6 °C
  • Solubility:
  • 1mmol in 2ml DMF clearly soluble
  • Appearance:
  • white fine powder
  • Hazard Symbols:
  • HarmfulXn
  • Risk Codes:
  • 20/21/22-36/37/38
  • Safety:
  • 24/25-36-26 Details
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CAS No.17791-52-5 N-Boc-L-HistidineCompetitive Product

Boc-His

Supplier:Chengdu Baishixing Science and Technology Industry Co., Ltd. [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

Boc-His-OH

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CAS No.17791-52-5 N-Boc-L-Histidine

Assay:98%

Supplier:Hangzhou Dayangchem Co., Ltd. [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

N-Boc-L-Histidine

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CAS No.17791-52-5 N-Boc-L-Histidine

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CAS No.17791-52-5 N-Boc-L-Histidine

Supplier:SICHUAN TONGSHENG AMINOACID CO.LTD [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

Supplier:Shijiazhuang JuSha Imp. & Exp. Co., Ltd [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

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Supplier:Chengdu Chengnuo New-Tech Co., Ltd [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

Boc-His-OH

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CAS No.17791-52-5 N-Boc-L-Histidine

Product Name Boc-His-OH CAS No. 17791-52-5 Molecular Formula C11H17N3O4 Molecular Weight 255.3 Appearance White fine crystals Specific Rotation (20/D) +26°,c=1 in CH3OH Melting Point 195±2°C

Supplier:Chengdu Chempep New Technology Co., Ltd [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

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Supplier:SENNCHEM [ Swaziland]

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CAS No.17791-52-5 N-Boc-L-Histidine

Boc-His-OH

Supplier:Kingos Chemical
Hangzhou Lohas Biotech Co., Ltd. [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

98%

Supplier:Sichuan Unibiochem Co., Ltd. [ China (Mainland)]

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Address:No.16, Gaoshengqiao Road, Chengdu 610041, China

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CAS No.17791-52-5 N-Boc-L-Histidine

BOC-HIS-OH

Supplier:NeoMPS SA [ France]

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CAS No.17791-52-5 N-Boc-L-Histidine

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Supplier:SYNTHE-SPEC [ United States]

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Supplier:Ivy Fine Chemicals [ United States]

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CAS No.17791-52-5 N-Boc-L-Histidine

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CAS No.17791-52-5 N-Boc-L-Histidine

Supplier:Zhengzhou Alfachem Co., Ltd. [ China (Mainland)]

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CAS No.17791-52-5 N-Boc-L-Histidine

Supplier:CHEMSWORTH [ India]

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Supplier:Chemspec Chemicals Pct. Ltd. [ India]

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Supplier:Achemo Sientific cooperation [ Hong Kong]

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Reference

Synthetic hemopolymers for reversible uptake of molecular oxygen
Synthetic hemopolymers for reversible uptake of molecular oxygen. Bayer, Ernst; Holzbach, Gunter (Inst. Org. Chem., Univ. Tuebingen, Tuebingen, Ger.). Angew. Chem., 89(2), 120-2 (German) 1977. CODEN: ANCEAD. DOCUMENT TYPE: Journal CA Section: 63 (Pharmaceuticals) Heme-contg. functionalized polymers are described which can bind O reversibly and can therefore be used in blood substitutes. These polymers show good H2O soly., imitate the distal imidazole group of hemoglobin and myoglobin, and make difficult the irreversible oxidn.In this article, certain chemicals are used. Some of their cas registry numbers are 17791-52-5 and 61477-35-8 of the O complex. Polyvinylpyrrolidone [9003-39-8], polyethylene glycol bis(glycyl)ester [55952-30-2], and a polyurethane [61463-27-2] prepd. from polyethylene glycol and a diisocyanate were used as the base polymers. Di-(tert-butyl)oxycarbonylhistidine [17791-52-5] was coupled with the free amino groups of the polymers with dicyclohexylcarbodiimide by the method for liq. phase peptide synthesis described by E. Bayer and M. Mutter (1974). The histidine aminoprotective group was cleaved with 1:1 trifluoroacetic acid-CH2Cl2 mixt., and the amino group was coupled with one of the carboxy groups of heme. The resultant polymers, polyethylene glycol bis(glycyl-histidyl-hemin) [61477-34-7] and the urethane polymer hemin deriv. [61483-81-6] contained 73 and 100% heme, resp., based on the no. of amino groups in the starting polymer. The Fe in both polymers was present as Fe(III) and had to be reduced with Na dithionite before oxygenation. .
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