Khoom Taw qhia
| Cov ntaub ntawv tseem ceeb ntawm Heptane |
| Khoom npe: | Heptane |
| Synonyms: | Aliphatic hydrocarbon; Dipropylmethane; Epani; Exxsol heptane; Gettysolve-C; Heptan; heptane (n-heptane); Heptanen |
| CAS: | 142-82-5 |
| MF: | C7H16 |
| MW: | 100.2 |
| EINECS: | 205-563-8 |
| Khoom Categories: | HPLC Solvents; n-Paraffins (GC Standard); Analytical Chemistry; Cov kuab tshuaj rau HPLC & Spectrophotometry; Cov kuab tshuaj rau Spectrophotometry; Cov khoom siv rau GC; Composite Drums; ACS thiab Reagent Grade Solvents; Carbon Steel Cans with NPT Threads; Nutrition Product Line; Kev tshawb fawb; Phytochemicals los ntawm Nroj Tsuag (Food / Spice / Tshuaj ntsuab); ReagentPlus; ReagentPlus Solvent Grade Products; Semi-Bulk Solvents; Solvent by Application; Zingiber officinale (Ginger); CHROMASOLV for HPLC; HPLC &; HPLC Qib Solvents (CHROMAS); /UHPLC Solvents (CHROMASOLV); UHPLC Solvents (CHROMASOLV); Biotech Solvents; Nco ntsoov / Foob Fwj; Anhydrous; Anhydrous Solvents; Cov Khoom; Cov Thawv Rov Qab; Reagent; Chav Kawm Tshuaj; Spectrophotometric Qib Resolvents; Grants / CEanthography Kev Soj Ntsuam Kev Soj Ntsuam; Cov kuab tshuaj - GC / SH; Biotech SolventsSolvents; Pesticide Residue Analysis (PRA) SolventsSolvent Fwj; PRA; EH; Amber iav fwj; Kev tshuaj ntsuam reagents; Analytical Reagents rau kev siv dav dav; Analytical / Chromatulography;-Purissial; Cov kuab tshuaj fwj; Cov kuab tshuaj los ntawm hom; Alpha Sort; Cov Qauv Ntsuas; Chromatography; EL; Ib puag ncig Standards; Volatiles / Semivolatiles; LC-MS Solvents; LC-MS Solvents &; Reagents (CHROMASOLV); Chromatography Reagents &; CHROMASOLV Plus; HPP Qib Solvents (CHROMASOLV); NOWPak Khoom; VerSA-Flow Products; EH, Puriss pa; Puriss pa; Kev tshuaj ntsuam xyuas rau kev siv dav; Anhydrous Grade SolventsSolvents; AnhydrousSolvents; Rov qab ntim cov kuab tshuaj; Cov raj mis hnyav; Cov kuab tshuaj? Lub raj mis; LC-MS Solvents; Mass Spectrometry (MS) & LC-MS; Spectroscopy; Amber iav fwj; CHROMASOLV rau HPLCSolvents; CHROMASOLV Solvents (HPLC, LC-MS); CHROMASOLV (R) HPLC Qib Cov Ntsiab Cai; Protein Sequencing; ; Reagents rau Protein Sequencing; CHROMASOLV PlusCHROMASOLV Solvents (HPLC, LC-MS); CHROMASOLV(R) Plus; LC-MS Plus thiab Gradient; ReagentPlus(R) Nruas Khoom Kab; Carbon Steel Cans nrog NPT Xov; Composite Drums (; ReagentPlus R) Cov khoom hnyav qib; ReagentPlus(R) Semi-Bulk Solvents; ReagentPlus(R) Cov kuab tshuaj; Cov tsiaj ntawv; H; HA -HTChemical Class; Hydrocarbons; Neats; Capillary GC Solvents; CHROMASOLV rau HPLCSemi-Bulk Solvents; CHRMA HPLCSolvents; NOWPak(R) Khoom; Semi-Bulk Solvents; VerSA-Flow? Cov khoom; Alpha Sort; E-LAlphabetic; HA -HT; Volatiles / Semivolatiles; Cov Kev Xaiv Ntim Ntim; HA -HT; Pharmaceutical Intermediates; bc0001;abz |
| Mol File: | 142-82-5.mol |
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| Heptan Chemical Properties |
| Melting point | -91 degree (lit.) |
| Boiling point | 98 degree (lit.) |
| ceev | 0.684 g/mL ntawm 20 degree |
| vapor ceev | 3.5 (vs huab cua) |
| vapor siab | 40 hli Hg (20 degree) |
| Refractive Index | n20/D 1.397 |
| Fp | 30 degree F |
| cia temp. | Khaws ntawm +5 degree rau +30 degree . |
| solubility | acetone: miscible (lit.) |
| daim ntawv | Ua kua |
| pka ua | >14 (Schwarzenbach li al., 1993) |
| Specific Gravity | 0.684 (20/4 degree) |
| xim | Tsawg dua lossis sib npaug rau 10 (APHA) |
| kwv tij polarity | 0.012 |
| tsw | Roj av. |
| Ntsig qhov pib | 0.67ppm |
| tawg txwv | 1-7%(V) |
| Dej Solubility | xyaum insoluble |
| lw max | λ: 200 nm Amax: Tsawg dua lossis sib npaug rau 1.0 λ: 225 nm Amax: Tsawg dua lossis sib npaug rau 0.10 λ: 250 nm Amax: Tsawg dua lossis sib npaug rau 0.01 λ: {{0}} nm Amax: Tsawg dua lossis sib npaug rau 0.005 |
| Merck | 14,4659 |
| BRN | 1730763 |
| Henry's Law Constant | 0.901, 1.195, thiab 1.905(atm?m3/mol) ntawm 26.0, 35.8, thiab 45. |
| Kev txwv tsis pub dhau | NIOSH REL: TWA 85 ppm (350 mg/m3), 15-min qab nthab 440 ppm (1,800 mg/m3), IDLH 750 ppm; OSHA PEL: TWA 500 ppm (2, 000 mg/m3); ACGIH TLV: TWA 400 ppm, STEL 500 ppm (tau txais). |
| Dielectric tsis tu ncua | 1.9 (20 degree) |
| Kev ruaj ntseg: | ruaj khov. Incompatible nrog oxidizing tus neeg sawv cev, chlorine, phosphorus. Cov nplaim taws heev. Yooj yim tsim cov khoom tawg nrog cua. |
| InChIKey | IMNFDUFMRHMDMM-UHFFFAOYSA-N |
| LogP | 4.660 |
| CAS DataBase Reference | 142-82-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Heptane (142-82-5) |
| EPA Tshuaj Registry System | Heptane (142-82-5) |
| Cov ntaub ntawv kev nyab xeeb |
| Hazard Codes | F, Xn, N |
| Risk Statements | 11-38-50/53-65-67 |
| Cov lus hais txog kev nyab xeeb | 9-16-29-33-60-61-62-23 |
| RIDADR | UN 1206 3/PG 2 |
| OEB | A |
| OEL | TWA: 85 ppm (350 mg/m3), Qab nthab: 440 ppm (1800 mg/m3) [15-feeb] |
| WGK Germany | 3 |
| RTECS | MI7700000 |
| F | 3-10 |
| Autoignition Kub | 433 degree F |
| TSCA | Yog lawm |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29011000 |
| Cov Ntaub Ntawv Muaj Xwm Ceev | 142-82-5(Cov ntaub ntawv muaj phom sij) |
| Toxicity | LC (2 teev hauv huab cua) hauv nas: 75 mg/l (Lazarew) |
| IDLA | 7 50ppm |
| MSDS Cov Ntaub Ntawv |
| Tus kws kho mob | Lus |
|---|---|
| ACROS | Lus Askiv |
| SigmaAldrich | Lus Askiv |
| ALFA | Lus Askiv |
| Kev siv Heptane thiab Synthesis |
| Kev piav qhia | n-Heptane yog cov kua ntshiab uas yog cov nplaim hluav taws kub hnyiab tau nrog cov ntxhiab tsw me me, zoo li roj av. Theodor pib yog 40- 547 ppm; kuj qhia ntawm 230 ppm.Molecular hnyav=100.23; Lub ntiajteb txawj nqus tshwj xeeb (H2O:l)= 0.68; Boiling point=98.39C; Cov ntsiab lus khov khov{11}}.6 degree ; Vapor siab=40 mmHg ntawm 25 degree ; Flash point=一4 degree ; Autoignition kub=204 degree .285 degree . Explosivelimits:LEL= 1.1%; UEL= 6.7%. Hazard Identification(basedonNFPA-704 M Rating System): Kev noj qab haus huv 1, Flammability 3, Reactivity 0. Xyaum insoluble hauv dej; solubility=0.0003%. |
| Chemical Properties | n-Heptane yog cov kua hluav taws xob, muaj nyob rau hauv cov roj crude thiab siv dav hauv kev lag luam auto-mobile. Piv txwv li, raws li ib tug hnyav, raws li ib tug roj av khob xeem tus qauv, raws li automotive starter fl uid, thiab paraffi nic naphtha. n-Heptane ua rau muaj teebmeem kev noj qab haus huv hauv cov neeg ua haujlwm, xws li CNS kev nyuaj siab, khaus tawv nqaij, thiab mob. Lwm cov tshuaj xws li n-octane (CH 3 (CH 2) 6 CH 3), n-nonane (CH 3 (CH 2) 7 CH 3), thiab n-decane (CH 3 (CH 2) 8 CH 3) muaj sib txawv industrial daim ntaub ntawv. Cov neeg ua haujlwm ua haujlwm raug rau cov khoom sib txuas no kuj qhia txog kev noj qab haus huv tsis zoo. Hauv txoj ntsiab cai, kev tswj hwm ntawm cov tshuaj aliphatic no yuav tsum tau tuav thiab pov tseg kom tsis txhob muaj teeb meem kev noj qab haus huv thiab tswj hwm cov qauv kev nyab xeeb rau kev nyab xeeb rau cov neeg ua haujlwm thiab thaj chaw nyob. |
| Chemical Properties | n-Heptane yog cov kua ntshiab uas yog cov nplaim taws kub hnyiab tau nrog cov ntxhiab tsw me me, zoo li roj av. Cov ntxhiab tsw pib yog 40 547 ppm; kuj qhia @ 230 ppm. |
| Lub cev muaj zog | Ntshiab, tsis muaj xim, ua kua heev nrog lub faint, qab ntxiag tsw zoo li hexane lossis octane. Raws li ib daim duab peb sab hnab odor txoj kev, ib tug tsw threshold concentration ntawm 670 ppbvtau tshaj tawm los ntawm Nagata thiab Takeuchi (1990). |
| Siv | Haum rau HPLC, spectrophotometric, ib puag ncig kuaj |
| Siv | Raws li tus qauv hauv kev sim khob ntawm roj av cav. |
| Siv | heptane yog ib qho hnyav thiab viscosity-txo tus neeg sawv cev. |
| Txhais | Cov kua tsis muaj xim alkane tau los ntawm roj av refining. Nws yog siv los ua kuab tshuaj. |
| Txhais | heptane: Ib qho kua ncaj-chainalkane tau los ntawm roj av, C7H16; rd 0}.684; mp -90.6 degree; bp98.4 ua. Nyob rau hauv standardizing octanenumbers, heptane yog muab ib tug valuezero. |
| Txoj kev tsim khoom | Heptane yog tsim nyob rau hauv cov txheej txheem refining. High purified heptane yog tsim los ntawm adsorption ntawm kev lag luam heptane ntawm molecular sieves. |
| Synthesis Reference (cov) | Tetrahedron Letters, 3, p. Peb 43, 1962DOI:10.1007/BF01499754 |
| Kev piav qhia dav dav | Cov kua dej ntshiab tsis muaj xim nrog cov ntxhiab tsw zoo li roj av. Flash point 25 degree F. Tsawg ntom dua dej thiab insoluble hauv dej. Vapors hnyav dua li huab cua. |
| Cua & Dej Reactions | Cov nplaim taws heev. Insoluble hauv dej. |
| Reactivity Profile | HEPTANE tsis sib haum nrog cov hauv qab no: Muaj zog oxidizers. |
| Hazard | Toxic los ntawm inhalation. Flammable, phom sij txaus ntshai. |
| Health Hazard | VAPOR: Tsis ua rau qhov muag, qhov ntswg lossis caj pas. Yog tias nqus tau, yuav ua rau hnoos lossis ua pa nyuaj. LIQUID: Irritating rau ntawm daim tawv nqaij thiab qhov muag. Yog tias nqos tau, yuav ua rau xeev siab lossis ntuav. |
| Hluav Taws Xob | FLAMMABLE. Flashback raws vapor txoj kev yuav tshwm sim. Vapor yuav tawg yog tias ignited nyob rau hauv ib qho chaw nyob. |
| Tshuaj Reactivity | Reactivity nrog dej Tsis muaj tshuaj tiv thaiv; Reactivity nrog cov khoom siv: Tsis muaj kev cuam tshuam; Kev ruaj ntseg thaum thauj: ruaj khov; Neutralizing Agents rau Acids thiab Caustics: Tsis cuam tshuam; Polymerization: Tsis cuam tshuam; Inhibitor ntawm Polymerization: Tsis cuam tshuam. |
| Ntxim yuav nphav raug | n-Heptane yog siv rau hauv cov duab, textiles, adhesives, thiab coatings; ua ib qho hnyav hnyav thiab hauv cov txheej txheem roj av refining; raws li tus qauv hauv kev sim khob ntawm roj av cav. |
| Kev pab thawj zaug | Yog hais tias cov tshuaj no nkag mus rau hauv lub qhov muag, Iremove; Txhua qhov sib tiv tauj lo ntsiab muag ib zaug thiab tso dej tam sim ntawd rau tsawg kawg 15 feeb, qee zaus nqa lub hau sab saud thiab qis dua. Nrhiav kev kho mob; ceev faj tam sim. Yog tias cov tshuaj no kis rau ntawm daim tawv nqaij, tshem tawm cov khaub ncaws tsis huv thiab ntxuav tam sim nrog xab npum thiab dej. Nrhiav kev kho mob tam sim ntawd. Yog tias cov tshuaj no tau nqus tau lawm, tshem tawm ntawm qhov raug, pib ua pa cawm siav (siv kev ceev faj thoob ntiaj teb, suav nrog daim npog qhov ncauj resuscitation) yog tias ua pa tau nres thiab CPR yog tias lub plawv nres. Hloov tam sim ntawd mus rau qhov chaw kho mob. Thaum cov tshuaj no tau nqos, tau txais kev kho mob. Muab dej ntau thiab ua rau: ntuav. Tsis txhob ua rau tus neeg tsis nco qab ntuav. |
| Qhov chaw | Schauer et al. (1999) qhia txog heptane nyob rau hauv lub diesel-powered nruab nrab-lub luag hauj lwm tsheb tso tawm ntawm ib tug emission tus nqi ntawm 470 g / km. Pom tau tias yog ib qho ntawm 140 cov khoom siv tsis zoo hauv cov roj taum pauv tau sau los ntawm cov chaw ua haujlwm uas kib ntau yam nqaij nyug, nqaij qaib, thiab nqaij nyug khoom (Takeoka li al., 1996). Schauer et al. (2001) ntsuas cov organic compound emission rates rau volatile organic compounds, gas-theem semi-volatile organic compounds, thiab particle-phase organic compounds from the home (fireplace) combustion of Pine, Oak, and eucalyptus. Gas-theem emission tus nqi ntawm heptane yog 28.9 mg / kg ntawm ntoo thuv hlawv. Emission tus nqi ntawm heptane tsis tau ntsuas thaum lub sij hawm combustion ntawm ntoo qhib thiab eucalyptus. California Phase II hloov kho cov roj av muaj heptane ntawm qhov concentration ntawm 9,700 mg / kg. Gas-phase tailpipe emission tus nqi los ntawm roj av-powered tsheb nrog thiab tsis muaj catalytic converters yog 1.82 thiab 268 mg / km, raws li (Schauer li al., 2002). |
| Environmental txoj hmoo | Tshuaj lom neeg.Heptane tuaj yeem biodegrade hauv ob txoj hauv kev. Thawj yog qhov tsim ntawm heptyl hydroperoxide, uas decomposes rau 1-heptanol tom qab oxidation rau heptanoic acid. Lwm txoj hauv kev suav nrog dehydrogenation rau 1-heptene, uas tuaj yeem cuam tshuam nrog dej tsim 1- heptanol (Dugan, 1972). Cov kab mob muaj peev xwm oxidize alkanes nyob rau hauv aerobic tej yam kev mob (Singer thiab Finnerty, 1984). Txoj kev degradative feem ntau yog oxidation ntawm lub davhlau ya nyob twg methyl pawg ua cov cawv sib xws (1-heptanol). Cov cawv yuav dhau los ua cov txheej txheem dehydrogenation ua heptanal tom qab oxidation tsim heptanoic acid. Cov kua qaub yuav tom qab ntawd metabolized los ntawm -oxidation los tsim cov khoom mineralization, carbon dioxide thiab dej (Singer and Finnerty, 1984). Hou (1982) tau tshaj tawm hexanoic acid ua cov khoom degradation los ntawm cov kab mob Pseudomonas aeruginosa. Photolytic.Cov nqi hauv qab no tau tshaj tawm rau cov tshuaj tiv thaiv ntawm hexane thiab OH radicals hauv huab cua: 7.15 x 10-12cm3/molecule?sec (Atkinson, 1990). Photooxidation cov tshuaj tiv thaiv tus nqi tas li ntawm 7.19 x 10-12thiab 1.36x10-16cm3/molecule?sec tau tshaj tawm rau cov tshuaj tiv thaiv ntawm heptane nrog OH thiab NO3, raws li (Sablji? thiab Güsten, 1990). Raws li tus nqi photooxidation tas li 7.15 x 10-12cm3/molecule?sec rau heptane thiab OH radicals, kwv yees atmospheric lifetime yog 19 h nyob rau lub caij ntuj sov tshav ntuj (Altshuller, 1991). Tshuaj / Lub cev.Ua tiav combustion hauv huab cua yields carbon dioxide thiab dej vapor. Heptane yuav tsis hydrolyze vim nws tsis muaj hydrolyzable functional pawg. |
| khaws cia | Xim Code- _Liab: Flammability Hazard: Khaws cia rau hauv qhov chaw cia cov kua hluav taws xob los yog lub txee tso cai kom deb ntawm qhov hluav taws kub thiab cov khoom siv corrosive thiab reactive.Ua ntej ua hauj lwm nrog heptane koj yuav tsum tau kawm txog nws txoj kev tuav thiab khaws cia. Ua ntej nkag mus rau qhov chaw kaw qhov chaw uas muaj heptane tuaj yeem tshwm sim, xyuas kom paub tseeb tias tsis muaj qhov tsis txaus ntseeg. Khaws rau hauv cov thawv kaw nruj nreem nyob rau hauv qhov chaw txias, zoo-ventilated. Cov khoom siv hlau uas cuam tshuam txog kev hloov pauv ntawm cov tshuaj no yuav tsum tau ua hauv av thiab sib koom ua ke. Yog tias ua tau, cia li tso kua dej los ntawm cov nruas lossis lwm lub thawv ntim khoom rau cov txheej txheem ntim khoom.Nruas yuav tsum tau nruab nrog tus kheej kaw qhov valve, lub tshuab nqus tsev siab, thiab cov nplaim taws. Siv cov cuab yeej thiab cov khoom siv uas tsis muaj pa taws, tshwj xeeb tshaj yog thaum qhib thiab kaw cov ntim ntawm cov tshuaj no. Qhov chaw ntawm qhov hluav taws xob, xws li kev haus luam yeeb thiab qhib nplaim taws, yog txwv tsis pub siv cov tshuaj no, tuav, lossis khaws cia hauv ib qho uas tuaj yeem tsim hluav taws kub lossis tawg puas tsuaj.Txawm qhov twg cov tshuaj no siv, tuav, tsim khoom, lossis khaws cia, siv hluav taws xob tawg. khoom siv thiab fittings. |
| Kev xa khoom | UN1206 Heptanes, Hazard Class: 3; Cov ntawv lo: 3-Flammable kua. |
| Kev tshuaj ntsuam toxicity | Tus mob toxicity mechanism yog xav tias yuav zoo ib yam li lwm cov kuab tshuaj uas sai sai induce anesthesia-zoo li cov teebmeem, piv txwv li, ib tug 'nonspecific narcosis' vim muaj kev cuam tshuam (kev daws teeb meem) ntawm kev ncaj ncees ntawm cellular daim nyias nyias ntawm lub hauv paus paj hlwb (CNS). Qhov kev cuam tshuam ntawm narcosis no kuj tseem tuaj yeem ua rau cov kab mob pom nrog kev mob toxicity, txawm hais tias gamma diketone metabolite ntawm n-heptane yuav yog lub luag haujlwm rau kev ncua sijhawm peripheral neurotoxicity pom hauv tib neeg tom qab raug mob, zoo ib yam li cov txheej txheem pom rau hexane. Txawm hais tias cov txheej txheem ntawm toxicity ntawm n-heptane, hais txog polyneuropathy, ntseeg tau tias zoo ib yam li hexane, tib neeg raug rau hauv qhov chaw ua haujlwm feem ntau yog sib xyaw ntawm lwm cov kuab tshuaj thiab cov ntaub ntawv tsiaj tsis tsim nyog. Heptane feem ntau suav hais tias tsis muaj tshuaj lom ntau dua li hexane tab sis me ntsis tshuaj lom ntau dua li octane. Qhov no yog tej zaum vim nws tsis tshua muaj volatile dua li yav tas los tab sis ntau volatile tshaj lub tom kawg (raws li lub nonspecific narcotic mechanism ntawm toxicity ntawm volatile organic tebchaw). Yog tias nws tau nkag mus rau hauv lub ntsws, txawm li cas los xij, n-heptane yuav ua rau muaj kev phom sij zoo ib yam li cov uas pom nrog roj av distillates. |
| Kev tsis sib haum xeeb | Tej zaum yuav sib tov sib xyaw nrog cua. Cov oxidizers muaj zog tuaj yeem ua rau hluav taws kub thiab tawg. Tawm tsam qee yam yas, roj hmab thiab txheej txheej. Tej zaum yuav khaws cov nqi hluav taws xob zoo li qub uas tuaj yeem ua rau nws cov vapors. |
| Pov tseg pov tseg | Dissolve los yog sib tov cov khoom nrog ib tug combustible solvent thiab hlawv nyob rau hauv ib tug tshuaj incinera tor nruab nrog ib tug afterburner thiab scrubber. Tag nrho tsoom fwv teb chaws, xeev, thiab cheeb tsam ib puag ncig cov cai yuav tsum tau ua raws li. |
| Heptane Kev Npaj Cov Khoom Siv thiab Cov Khoom Raw |
| Cov khoom nyoos | Methylcyclohexane-->Alkanes C6-C19 Kit-->CIS-1,3-DIMETHYLCYCLOPENTANE-->3-ETHYLPENTANE |
| Cov khoom npaj | Fenvalerate-->Ethacrynic acid-->Tetrahydro-4H-pyran-4-one-->6-FLUORO-1H-PYRAZOLO[3,4-B]PYRIDINE-3-CARBONITRILE-->2-CHLORO-5-FLUOROISONICOTINIC ACID-->8-Aminoisoquinoline-->5-Amino-2-chloropyrimidine-->2-(AMINOMETHYL)CYCLOPROPANECARBOXYLIC ACID-->4'-FORMYLBENZO-15-CROWN 5-ETHER-->6-FLUORO-1H-PYRAZOLO[3,4-B]PYRIDINE-3-CARBOXYLIC ACID-->1-Methyl-1H-imidazole-2-carboxylic acid-->Fenpropathrin-->4,6-Dimethylpyrimidine-5-carboxylic acid-->(2-METHOXY-1-METHYL-ETHYL)-HYDRAZINE-->4,6-Diamino-2-pyrimidinol-->1-Nonanol-->2-Chloro-5-nitropyrimidine-->N-(2-Amino-4,6-dichloro-5-pyrimidinyl)formamide-->3-ISOPROPOXYPHENYLBORONIC ACID-->Methyl 2,4-dichloropyrimidine-6-carboxylate-->2,4,6-TRICHLOROPYRIMIDIN-5-AMINE-->4-bromo-1-(bromomethyl)-2-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile-->2,4,6-TRICHLORO-5-NITROPYRIMIDINE-->2-(4-chlorophenyl)-1-methyl-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile-->5-Nitro-2-pyrimidinol sodium salt ,97%-->2-(4-CHLOROPHENYL)-4-BROMO-1-METHYL-5-(TRIFLUOROMETHYL)-1H-PYRROLE-3-CARBONITRILE-->Trifluoromethanesulfonic acid tert-butyldimethylsilyl ester-->Ziegler catalyst,Phillips catalyst-->2-Chloro-5-fluoropyridine-->Tetrabenzyl pyrophosphate-->Phenylsulfenylchloride-->titanium trichloride / txhuas dialkyl chloride |
Cim npe nrov: Tuam Tshoj heptane manufacturers, lwm tus neeg, Hoobkas
Tug: N-OCTANE
Tom ntej: 2-ETHYL-2-HEXENAL
Koj Tseem Yuav Zoo Li
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