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9-Fluorenylmethyl chloroformate

Product Name
9-Fluorenylmethyl chloroformate
CAS No.
28920-43-6
Chemical Name
9-Fluorenylmethyl chloroformate
Synonyms
FMOC-CL;FoMc-Cl;(9H-fluoren-9-yl)Methyl carbonochloridate;fmoc-ci;9-Fluorenylmethyl;FMOC-C;FMOC-CHLORIDE;1-(9-fluorenyl)methylchloroformate;9-FLUORENYLMETHOXYCARBONYL CHLORIDE;Fluorenylmethyloxycarbonyl chloride
CBNumber
CB7234569
Molecular Formula
C15H11ClO2
Formula Weight
258.7
MOL File
28920-43-6.mol
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9-Fluorenylmethyl chloroformate Property

Melting point:
62-64 °C(lit.)
Boiling point:
365.79°C (rough estimate)
Density 
1.1780 (rough estimate)
refractive index 
1.5330 (estimate)
storage temp. 
2-8°C
solubility 
dioxane: 0.1 g/mL, clear, colorless
form 
Crystalline Powder
color 
White to very pale yellow
Sensitive 
Moisture Sensitive
BRN 
2279177
Stability:
Hygroscopic, Moisture Sensitive
InChI
InChI=1S/C15H11ClO2/c16-15(17)18-9-14-12-7-3-1-5-10(12)11-6-2-4-8-13(11)14/h1-8,14H,9H2
InChIKey
IRXSLJNXXZKURP-UHFFFAOYSA-N
SMILES
C(Cl)(OCC1C2=C(C=CC=C2)C2=C1C=CC=C2)=O
LogP
3.45
CAS DataBase Reference
28920-43-6(CAS DataBase Reference)
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Safety

Hazard Codes 
C,T
Risk Statements 
34-20/21/22
Safety Statements 
26-36/37/39-45-27
RIDADR 
UN 3261 8/PG 2
WGK Germany 
3
RTECS 
LQ6250000
10-21
TSCA 
No
HazardClass 
6.1
PackingGroup 
II
HS Code 
29159020
Storage Class
8A - Combustible corrosive hazardous materials
Hazard Classifications
Eye Dam. 1
Skin Corr. 1B
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H314Causes severe skin burns and eye damage

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P330+P331IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.52259
Product name
(9-Fluorenylmethyl) chloroformate
Purity
Novabiochem?
Packaging
25g
Price
$56
Updated
2025/07/31
Sigma-Aldrich
Product number
8.18203
Product name
(9-Fluorenylmethyl) chloroformate
Purity
for synthesis
Packaging
500mg
Price
$35.1
Updated
2025/07/31
Sigma-Aldrich
Product number
8.52259
Product name
(9-Fluorenylmethyl) chloroformate
Purity
Novabiochem?
Packaging
100g
Price
$158
Updated
2025/07/31
Sigma-Aldrich
Product number
8.18203
Product name
(9-Fluorenylmethyl) chloroformate
Purity
for synthesis
Packaging
5G
Price
$119
Updated
2025/07/31
Sigma-Aldrich
Product number
8.18203
Product name
(9-Fluorenylmethyl) chloroformate
Purity
for synthesis
Packaging
25g
Price
$307
Updated
2025/07/31
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9-Fluorenylmethyl chloroformate Chemical Properties,Usage,Production

Description

9-Fluorenylmethyl chloroformate (Fmoc-C1) is a significant biochemical reagent introduced by Carpino. It has been widely utilized as a reagent for the introduction of the 9-fluorenylmethoxycarbonyl (Fmoc moiety) in both peptide and nucleotide synthesis, as well as serving as a coupling agent in peptide synthesis[1]. Furthermore, Fmoc-C1 can function as a versatile fluorescent labeling reagent for primary and secondary amines[2].

Chemical Properties

9-Fluorenyl chloroformate appears as white crystals with a melting point of 62–64 °C. It is soluble in organic solvents such as CH₂Cl₂, THF, and dioxane. It reacts with alcohols, ammonia or amines, and water.

Uses

9-Fluorenylmethyl chloroformate can be used as N-protecting reagent for oligonucleotide and peptide syntheses. It can act as reagent for the introduction of Fmoc-amino-protecting group, which is stable towards acids but is readily cleaved under mildly basic non-hydrolytic conditions.

Uses

9-Fluorenylmethyl chloroformate is an N-Protecting agent for peptides research and was used for the pre-column derivatization of the biogenic amines (BAs) cadaverine (Cad), histamine (Him), octopami ne (Ocp), phenylethylamine (Pea), putrescine (Put), spermidine (Spd), spermine (Spm), tyramine (Tym).

General Description

Fmoc chloride is a derivatizing agent.

Flammability and Explosibility

Not classified

Safety Profile

A poison. Mutation data reported. A corrosive. When heated to decomposition it emits toxic vapors of Cl-.

Purification Methods

If the IR contains no OH bands (at ~3000 cm-1) due to the hydrolysis product 9-fluorenylmethanol, then purify it by recrystallisation from dry Et2O. IR (CHCl3) has a band at 1770 cm-1 (C=O), and the NMR (CDCl3) has  at 4-4.6 (m 2H, CHCH2) and 7.1-7.8 (m, 8 aromatic H) ppm. The azide (FMOC-N3) has m 89-90o (from -1hexane) and IR (CHCl3) at 2135 (N3) and 1730 (C=O) cm , and the carbazate (FMOC-NHNH2) has m 171o(dec) (from nitromethane), IR (KBr) 3310, 3202 (NH) and 1686 (CONH) cm-1. [Caprino & Han J Org Chem 37, 3404 1972 , J Am Chem Soc 92 5748 1970, Koole et al. J Org Chem 59 1657 1989, Fürst et al. J Chromatogr 499 537 1990.]

References

[1] S. TANTRY; V. V B; G Vasanthakumar. Synthesis of peptides employing 9-fluorenylmethyl chloroformate as a coupling agent[J]. Letters in peptide science?: LIPS, 2006, 10 1: 51-55. DOI:10.1007/BF02443642.
[2] H. A. MOYE  A. B. A Versatile Fluorogenic Labelling Reagent for Primary and Secondary Amines: 9-Fluorenylmethyl Chloroformate[J]. Analytical Letters, 1979, 12 1: 25-35. DOI:10.1080/00032717908082516.

9-Fluorenylmethyl chloroformate Preparation Products And Raw materials

Raw materials

Preparation Products

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9-Fluorenylmethyl chloroformate Suppliers

Suzhou Highfine Biotech Co., Ltd
Tel
0512-68417696 13962195629
Fax
0512-68417696
Email
minhan.zhao@highfine.com
Country
China
ProdList
475
Advantage
75
Wuhan Tianjia Tingle Chemical Co., Ltd.
Tel
19107168066
Email
391997666@qq.com
Country
China
ProdList
6
Advantage
58
Lianyungang Guanxin Pharmaceutical Technology Co., Ltd
Tel
15351860687
Email
1462699602@qq.com
Country
China
ProdList
42
Advantage
58
Gill polypeptide biopharmaceutical (dalian) co., LTD
Tel
021-61263455 13167021076
Email
amy@glschina.com
Country
China
ProdList
9920
Advantage
58
Binhai gill polypeptide co. LTD
Tel
021-61263389 13524856427
Fax
WeChat630417570
Email
Joetang@glschina.com
Country
China
ProdList
10000
Advantage
58
Tianjin Yixing Biotechnology Co. , Ltd.
Tel
022-82103883 18100103827
Email
2868962216@qq.com
Country
China
ProdList
35
Advantage
58
Nanjing Jubai Biomedical Technology Co., Ltd.
Tel
13585203734
Email
info@jbzml.com
Country
China
ProdList
111
Advantage
58
J & K SCIENTIFIC LTD.
Tel
18210857532; 18210857532
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006356688 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
INTATRADE GmbH
Tel
+49 3493/605464
Fax
+49 3493/605470
Email
sales@intatrade.de
Country
Germany
ProdList
3572
Advantage
66
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View Lastest Price from 9-Fluorenylmethyl chloroformate manufacturers

Shaanxi Dideu New Materials Co. Ltd
Product
9-Fluorenylmethyl chloroformate 28920-43-6
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98
Supply Ability
10000KGS
Release date
2025-12-16
Xinxiang Juyuan Biological Technology Co., Ltd.
Product
FMOC-CL 28920-43-6
Price
US $750.00/kg
Min. Order
1kg
Purity
99
Supply Ability
50tons
Release date
2025-08-04
Hebei Zhuanglai Chemical Trading Co Ltd
Product
9-Fluorenylmethyl chloroformate 28920-43-6
Price
US $45.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20 tons
Release date
2024-12-20

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