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1-(Trimethylsiloxy)cyclopentene

1-(Trimethylsiloxy)cyclopentene Structure
1-(Trimethylsiloxy)cyclopentene structure
CAS No.
19980-43-9
Chemical Name:
1-(Trimethylsiloxy)cyclopentene
Synonyms
(cyclopent-1-en-1-yloxy)triMethylsilane;1-(TRIMETHYLSILYLOXY)CYCLOPENTENE;(CYCLOPENTENYLOXY)TRIMETHYLSILANE;DK654;DKFELEX0164;1-(TRIMETHYLSILOXY)CYCLOPENTENE;1-Trimethylsiloxy-1-cyclopentene;TRIMETHYLSILYLOXY-1-CYCLOPENTENE;(Cyclopentenyloxy)trimethylsylane;1-(Trimethylsiloxy)-1-cyclopentene
CBNumber:
CB5278075
Molecular Formula:
C8H16OSi
Molecular Weight:
156.3
MDL Number:
MFCD00001395
MOL File:
19980-43-9.mol
MSDS File:
SDS
Last updated:2026-05-28 02:11:26
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1-(Trimethylsiloxy)cyclopentene Properties

Boiling point 45 °C/11 mmHg (lit.)
Density 0.878 g/mL at 25 °C (lit.)
refractive index n20/D 1.440(lit.)
Flash point 101 °F
storage temp. −20°C
form clear liquid
color Colorless to Light yellow to Light orange
Specific Gravity 0.878
Hydrolytic Sensitivity 7: reacts slowly with moisture/water
BRN 385956
InChI 1S/C8H16OSi/c1-10(2,3)9-8-6-4-5-7-8/h6H,4-5,7H2,1-3H3
InChIKey UBMYYGXGMPGCBO-UHFFFAOYSA-N
SMILES C[Si](C)(C)OC1=CCCC1
CAS DataBase Reference 19980-43-9(CAS DataBase Reference)
EPA Substance Registry System Silane, (1-cyclopenten-1-yloxy)trimethyl- (19980-43-9)
UNSPSC Code 12352100
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Flame (GHS02)Exclamation Mark (GHS07)
GHS02,GHS07
Signal word  Warning
Hazard statements  H226-H315-H319-H335
Precautionary statements  P210-P302+P352-P305+P351+P338
target organs Respiratory system
PPE Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Hazard Codes  Xi
Risk Statements  10-36/37/38
Safety Statements  26-36
RIDADR  UN 1993 3/PG 3
WGK Germany  3
F  10-21
TSCA  TSCA listed
HazardClass  3.2
PackingGroup  III
HS Code  29319090
Storage Class 3 - Flammable liquids
Hazard Classifications Eye Irrit. 2
Flam. Liq. 3
Skin Irrit. 2
STOT SE 3
Limited Quantities 5.0 L (1.3 gallons) (liquid)
Excepted Quantities Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
NFPA 704
3
2 0

1-(Trimethylsiloxy)cyclopentene price More Price(25)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 283126 1-(Trimethylsiloxy)cyclopentene 97% 19980-43-9 5g $139 2026-04-30 Buy
TCI Chemical T1648 1-(Trimethylsilyloxy)cyclopentene >97.0%(GC) 19980-43-9 10mL $165 2026-04-30 Buy
Usbiological 291776 1-(Trimethylsilyloxy)cyclopentene Asreported 19980-43-9 5g $342 2026-06-03 Buy
Usbiological 291776 1-(Trimethylsilyloxy)cyclopentene Asreported 19980-43-9 10g $480 2026-06-03 Buy
Usbiological 291776 1-(Trimethylsilyloxy)cyclopentene Asreported 19980-43-9 25g $712 2026-06-03 Buy
Product number Packaging Price Buy
283126 5g $139 Buy
T1648 10mL $165 Buy
291776 5g $342 Buy
291776 10g $480 Buy
291776 25g $712 Buy

1-(Trimethylsiloxy)cyclopentene Chemical Properties, Uses, Production

Chemical Properties

Clear light yellow liquid

Uses

1-(Trimethylsiloxy)cyclopentene may be used in chemical synthesis studies.

Purification Methods

If too impure as seen by the NMR spectrum, then dissolve it in 10 volumes of pentane, shake with cold NaHCO3 (3 x 500mL), then 1.5M HCl (200mL) and aqueous NaHCO3 (200mL) again, dry (Na2SO4), filter, evaporate and distil it through a short Vigreux column (p 11). 1H NMR: (CDCl3) : 0.21 (s, 9H), 1.55 (m, 2H), 1.69 (m, 2H), 2.05 (br d, 4H) and 4.88 (br s, 1H). GLPC in a 6ft x 1/8inch with 3% SP2100 on 100-120 mesh Supelcoport column should give one peak. Store dry. [For the cyclohexene analogue see Varghese et al. Org Synth Coll Vol VIII 460 1993.]

1-(Trimethylsiloxy)cyclopentene synthesis

79-36-7
120-92-3
19980-43-9
Synthesis of 1-(Trimethylsiloxy)cyclopentene from Dichloroacetyl chloride and Cyclopentanone

1-(Trimethylsiloxy)cyclopentene Preparation Products And Raw materials

Raw materials

1-Cyclopenten-1-ol Ethyl (trimethylsilyl)acetate 1-Methoxy-1-trimethylsilyloxypropene Trimethylsilyl trifluoroacetate Hexamethyldisilane
1,1,1-Trimethyl-2,2,2-triphenyldisilane N-(Trimethylsilyl)acetamide Bromotrimethylsilane Allyltrimethylsilane Cyclopentanone

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Preparation Products

1-Trimethylsilyl-2-pyrrolidinone 2-Oxazolidone

1-(Trimethylsiloxy)cyclopentene Suppliers

Global Suppliers ( 122)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Syntechem Co.,Ltd info@syntechem.com China 12973 57
Tongchuang Pharma(Suzhou). Co., Ltd. 0512-63263366 18912765016 tongtf110@sina.com China 984 62
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. 025-66113011 13913916777 cfzhang@aikonchem.com China 19902 55
TOKYO CHEMICAL INDUSTRY CO., LTD. 03-36680489 Sales-JP@TCIchemicals.com Japan 28364 80
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 22497 55
Shanghai Aladdin Bio-Chem Technology Co.,LTD 400-6206333 13167063860 anhua.mao@aladdin-e.com China 29977 65
Supplier Advantage
J & K SCIENTIFIC LTD. 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 62
TCI (Shanghai) Development Co., Ltd. 81
Energy Chemical 61
Syntechem Co.,Ltd 57
Tongchuang Pharma(Suzhou). Co., Ltd. 62
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. 55
TOKYO CHEMICAL INDUSTRY CO., LTD. 80
9ding chemical ( Shanghai) Limited 55
Shanghai Aladdin Bio-Chem Technology Co.,LTD 65

View Latest Price from 1-(Trimethylsiloxy)cyclopentene manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
1-trimethylsiloxycyclopentene pictures 2020-02-01 1-trimethylsiloxycyclopentene
19980-43-9
 $1.00 1KG Min98% HPLC Career Henan Chemical Co

1-(Trimethylsiloxy)cyclopentene Spectrum

1-(Trimethylsiloxy)cyclopentene(19980-43-9)MS1-(Trimethylsiloxy)cyclopentene(19980-43-9)1HNMR1-(Trimethylsiloxy)cyclopentene(19980-43-9)13CNMR1-(Trimethylsiloxy)cyclopentene(19980-43-9)IR11-(Trimethylsiloxy)cyclopentene(19980-43-9)Raman

19980-43-9 (1-(Trimethylsiloxy)cyclopentene) Related Search:

Lithium bis(trimethylsilyl)amide Methyltris(methylethylketoxime)silane Methyl cyclopentenolone Hydroxypropyl methyl cellulose Azidotrimethylsilane
Cyclopentene 1-Pentene Ethoxytrimethylsilane Trimethyl(propoxy)silane Isopropenyloxytrimethylsilane
Dimethylethoxysilane Methoxytrimethylsilane Vinyloxytrimethylsilane Cyclopentanone Dimethylmethoxysilane
cyclopentene Silane, methoxy- 1-(Trimethylsiloxy)cyclopentene

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CYCLOPENTANONE ENOL TRIMETHYL SILYL ETHER 1-(TRIMETHYLSILOXY)CYCLOPENTENE 1-(TRIMETHYLSILYLOXY)CYCLOPENTENE (1-CYCLOPENTENYLOXY)TRIMETHYLSILANE (1-cyclopenten-1-yloxy)trimethylsilane (Cyclopentenyloxy)trimethylsylane 1-(TRIMETHYLSILYLOXY)CYCLOPENTENE 97+% (1-Cyclopentenyl)(trimethylsilyl) ether 1-(Trimethylsiloxy)-1-cyclopentene 1-Cyclopentenyl(trimethylsilyl) ether 1-Trimethylsiloxy-1-cyclopentene Trimethyl(1-cyclopentenyloxy)silane Cyclopentene,1-[(triMethylsilyl)oxy]- 1-(Trimethylsiloxy)cyclopentene 97% cyclopenten-1-yloxy(trimethyl)silane TRIMETHYLSILYLOXY-1-CYCLOPENTENE 1-Cyclopentenyloxytrimethylsilane, Cyclopentanone enol trimethyl silyl ether (Cyclopentene oxygen group) trimethylsilane DK654 DKFELEX0164 (Cyclopent-1-en-1-yloxy)trimethylsilane - [C90347] (CYCLOPENTENYLOXY)TRIMETHYLSILANE (cyclopent-1-en-1-yloxy)triMethylsilane 19980-43-9 C5H7OSiCH33 Building Blocks Oxygen Compounds Organic Building Blocks Enol Ethers Silicon Compounds (for Synthesis) Si (Classes of Silicon Compounds) Monoalkoxysilanes Si-O Compounds Monoalkoxysilanes Si (Classes of Silicon Compounds) Silicon Compounds (for Synthesis) Si-O Compounds Synthetic Organic Chemistry