Our Products

View our Products

You can use the search function below to quickly find the product you are looking for. You can also use browse our product catalog using the pre-defined categories listed below the search bar.

search
Product #CAS #Product Name
2484829-85-6Diphenylphosphine, 30% Solution in Toluene
2459Ethyl phenylphosphinate
2184787618-22-82-Dicyclohexylphosphino-2′,6′-diisopropoxybiphenyl RuPhos
253012078-25-0Dicarbonylcyclopentadienyl cobalt(I) CpCOCO
2451406462-34-8Tris(ethylmethylamido)aluminum(III) TEMAA
247284030-20-67-Methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene MTBD
2423186598-40-3Bis(tert-butylamino)silane BTBAS
24581310584-14-5Chloro(2-dicyclohexylphosphino-2′,4′,6′-triisopropyl-1,1′-biphenyl)[2-(2′-amino-1,1′-biphenyl)]PdII 2nd_Generation_XPhos_Precatalyst_(XPhos-Pd-G2)
215776189-56-5(S)-(-)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl-Low Purity S-binap-LP
172233494-80-3Di-tert-butylphosphate, potassium salt
23582081-12-1Zirconium tert-butoxide
213548074-47-1Vinylidene-1,1-diphosphonic acid, tetraisopropylester
07036163-58-2Tri(o-tolyl)phosphine
201813406-29-6Tris(4-trifluoromethylphenyl)phosphine
04715815-61-2Tris(4-morpholino)phosphine
04074731-65-1Tris(2-methoxyphenyl)phosphine Tris(o-anisyl)phosphine
03025518-52-5Tris(2-furyl)phosphine
219522031-12-51,1,1-Tris(diphenylphosphinomethyl)ethane
220433195-99-2Tris(dimethylamino)titanium methylcyclopentadienylide
219258057-99-1Tris(dimethylamino)titanium cyclopentadienylide
195615112-89-7Tris(dimethylamino)silane
2205941596-80-1Tris(dimethylamino)hafnium cyclopentadienylide
12516596-96-9Tris(dimethylamino)arsine
2376352546-72-6Tris(diethylamido)aluminum(III)
07862526-64-9Triphenylphosphine dichloride Dichlorotriphenylphosphorane
05921034-39-5Triphenylphosphine dibromide
07076224-91-51-(Trimethylsilyl)-1-propyne Methyl_trimethylsilylacetylene
05222916-68-92-(Trimethylsilyl)ethanol 2-Hydroxyethyltrimethylsilane
04754648-54-8Trimethylsilyl azide Azidotrimethylsilane
0689594-09-2Trimethylphosphine
1560593-88-4Trimethylarsine
2196594-10-5Trimethyl antimony
219475-24-1Trimethylaluminum
17753,4,5-Trimethoxyphenylphosphine
2286123927-75-3Trimethoxy(pentamethylcyclopentadienyl) titanium
1933121099-07-8Triisopropylphosphonium tetrafluoroborate
18476476-36-4Triisopropylphosphine, tech., 10% solution in Isopropanol
19216476-36-4Triisopropylphosphine
06556476-36-4Triisopropylphosphine, tech.
208573300-45-5Triisopropylantimony
09354125-25-1Triisobutylphosphine
03553699-66-9Triethyl 2-phosphonopropionate
2198923-34-2Triethylindium
21671115-99-7Triethylgallium TEG
06342356-16-3Triethyl 2-fluoro-2-phosphonoacetate
012615606-95-8Triethyl arsenate Arsenic_acid_triethyl_ester
1729617-85-6Triethylantimony
217958656-04-5Tricyclohexylphosphonium tetrafluoroborate
09072622-14-2Tricyclohexylphosphine, 20% solution in Toluene
09072622-14-2Tricyclohexylphosphine
1735157464-07-8Tri(chloro)di(pyridyl)(tertbutylimido)tantalum
1691131274-22-1Tri(tert-butylphosphonium)tetrafluoroborate Tri-tert-butylphosphine_tetrafluoroboric_acid_adduct
0702814-29-9Tri-n-butylphosphine oxide
216597739-46-31,3,5,7-Tetramethyl-2,4,8-trioxa-6-phenyl-6-phosphaadamantane MeCg-PPh
048916001-93-7Tetramethyl methylenediphosphonate
234039772-62-8N,N,N’N’-Tetrakis(trimethylsilyl)-1,6-hexanediamine
1985175923-04-3Tetrakis(ethylmethylamino)zirconium TEMAZ
2221791114-66-4Tetrakis(ethylmethylamino)vanadium TEMAV
2043308103-54-0Tetrakis(ethylmethylamino)titanium
1896477284-75-6Tetrakis(ethylmethylamino)silane
218819756-04-8Tetrakis(dimethylamino)zirconium, technical grade TDMAZ
145719756-04-8Tetrakis(dimethylamino)zirconium
02193275-24-9Tetrakis(dimethylamino)titanium Titanium_tetrakis(dimethylamide)
14581624-01-7Tetrakis(dimethylamino)silane
146119782-68-4Tetrakis(dimethylamino)hafnium
20727344-40-3Tetrakis(dimethylamino)germane
145613801-49-5Tetrakis(diethylamino)zirconium
2250219852-96-7Tetrakis(diethylamido)vanadium
08914419-47-0Tetrakis(diethylamino)titanium Titanium_tetrakis(diethylamide)
145917048-10-1Tetrakis(diethylamino)silane
146019824-55-6Tetrakis(diethylamino)hafnium
04394546-04-7Tetraethyl p-xylylenediphosphonate
22356074-84-6Tantalum(V) ethoxide
23451049726-96-6Sodium 2′-dicyclohexylphosphino-2,6-dimethoxy-1,1′-biphenyl-3-sulfonate hydrate Water_soluble_SPhos
20241498-54-0n-Propyl tetraisopropylphosphorodiamidite
120815475-27-1Potassium diphenylphosphide, 0.5 M suspension in THF
06864408-78-0Phosphonoacetic acid
1197638-21-1Phenylphosphine
2399638-21-1Phenylphosphine, 10% solution in hexane
230912129-06-5Pentamethylcyclopentadienyltitanium trichloride
236619824-59-0Pentakis(dimethylamino)tantalum, INTEGRA PDMAT-INTEGRA
236619824-59-0Pentakis(dimethylamino)tantalum, SumO PDMAT-SumO
232858832-08-9Oxotungsten tetraisopropoxide
0615777-52-64-Nitrophenyl phosphorodichloridate 4-Nitrophenyl_dichlorophosphate
2329Nickel bis(N,N-3-dimethylamino-2-propoxide)
229131651-76-01-Naphthylphosphorodichloridate
2050894085-97-35-[bis(tert-butyl)phosphino]-1-(1-naphthalenyl)-1H-pyrazole NappyPhos
2002185449-80-3(S)-MONOPHOS (S)-(+)-(3,5-Dioxa-4-phosphacyclohepta[2,1-a;3,4-a']dinaphthalen-4-yl)dimethylamine
2003157488-65-8(R)-MONOPHOS (R)-(-)-(3,5-Dioxa-4-phosphacyclohepta[2,1-a;3,4-a']dinaphthalen-4-yl)dimethylamine
077392611-10-4Methyl N,N,N’,N’-tetraisopropylphosphorodiamidite
0567676-97-1Methylphosphonic dichloride Methanephosphonic_dichloride
0620993-13-5Methylphosphonic acid Methanephosphonic_acid
2112707-61-93-Methyl-1-phenyl-2-phospholene-1-oxide, tech. grade mppo
0525707-61-93-Methyl-1-phenyl-2-phospholene-1-oxide mppo
06491984-15-2Methylenediphosphonic acid
0032136735-95-0(S,S)-Methyl DuPhos
0018147253-67-6(R,R)-Methyl DuPhos
08044020-99-9Methyl diphenylphosphinite Diphenylmethoxyphosphine
011686030-43-5Methyl N,N-diisopropylchlorophosphoramidite N,N-Diisopropylmethylphosphonamidic_chloride
04561067-74-9Methyl diethylphosphonoacetate
2322153922-24-8Isopropyl N,N,N’,N’-tetraisopropylphosphorodiamidite
194285849-33-8(+)-O-Isopropylidene-2,3-dihydroxy-1,4-bis[bis(2-methylphenyl)phosphino]butane
206671359-97-2(-)-O-Isopropylidene-2,3-dihydroxy-1,4-bis[bis(3,4-dimethylphenyl)phosphino]butane 25% wt in Toluene
197716247-01-12-Hydroxyethylphosphine
03801608-26-0Hexamethylphosphorous triamide Tris(dimethylamino)phosphine
2258Hexamethyldisilazido-N,N’-isopropylimidazol-2-ylidenecopper(I)
0990822-39-9Ethylene chlorophosphite 2-Chloro-1,3,2-dioxaphospholane
08996609-64-9Ethylene chlorophosphate 2-Chloro-1,3,2-dioxaphospholane-2-oxide
0201719-80-2Ethyl diphenylphosphinite Diphenylethoxyphosphine
20647450-59-11,12-Dodecanediylbis(phosphonic acid) 1,12-Dodecanediphosphonic_acid
21083923-52-21,1-Diphenyl-2-propyn-1-ol
203440538-11-2Diphenylphosphinostyrene
2168178176-80-22-Diphenylphosphino-1-naphthoic acid
14424848-43-52-(Diphenylphosphino)ethylamine
1822240417-00-92-(Diphenylphosphino)-2′-(N,N-dimethylamino)biphenyl Ph-DavePhos
173650777-76-9o-Diphenylphosphinobenzaldehyde
2058829-85-6Diphenylphosphine, 30% Solution in THF
2223829-85-6Diphenylphosphine, 99%
2069829-85-6Diphenylphosphine, 10% Solution in THF
0312829-85-6Diphenylphosphine
022632305-98-9(-)-DIOP (-)-O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane
187419814-75-69,9-Dimethyl-9H-xanthene
0830677-43-0N,N-Dimethylphosphoramidodichloridate N,N-Dimethylphosphoramic_dichloride
09241111-92-8Dimethylphosphinic chloride
0729672-66-2Dimethyl(phenyl)phosphine
01334202-14-6Dimethyl 2-oxopropylphosphonate Dimethyl_acetonylphosphonate
1732813-77-4Dimethyl chlorophosphate Dimethyl_phosphorochloridate
1700161265-03-89,9-Dimethyl-4,5-bis(diphenylphosphino)xanthene Xantphos
1945856405-77-19,9-Dimethyl-4,5-bis(di-tert-butylphosphino)xanthene
2255120441-92-1(3-Dimethylaminopropyl)dimethylindium
21866063-89-4Dimethylaluminum isopropoxide
2183796867-38-48-(2,4-Dimethoxyphenyl)-1,3,5,7-tetramethyl-2,4,6-trioxa-8-phosphatricyclo[3.3.1.13,7]decane
216382614-84-4(2,6-Dimethoxyphenyl)dichlorophosphine Dichloro(2,6-dimethoxyphenyl)phosphine
0616921-26-6Diisopropylphosphoramidous dichloride
05001445-75-6Diisopropyl methanephosphonate
07414006-38-6Diisobutylphosphine
09621069-08-5Diethylphosphoramidous dichloride (Diethylamino)dichlorophosphine
11733095-95-2Diethylphosphonoacetic acid
013853575-08-9Diethyl 1-naphthylmethylphosphonate
0577683-08-9Diethyl methylphosphonate Methylphosphonic_acid_diethyl_ester
09092942-58-7Diethyl cyanophosphonate Diethyl_phosphoryl_cyanide
01092537-48-6Diethyl cyanomethylphosphonate (Diethylphosphono)acetonitrile
0135589-57-1Diethyl chlorophosphite Diethyl_chlorophosphonite
1935564483-18-72-Dicyclohexylphosphino-2′,4′,6′-triisopropyl-1,1′-biphenyl XPHOS
1888251320-86-22-Dicyclohexylphosphino-2′-methylbiphenyl MePhos
1605213697-53-12-Dicyclohexylphosphino-2′-(N,N-dimethylamino)biphenyl DavePhos
23651070663-78-32-(Dicyclohexylphosphino)-3,6-dimethoxy-2′,4′-6′-tri-i-propyl-1,1′-biphenyl BrettPhos
2051657408-07-62-Dicyclohexylphosphino-2′,6′-dimethoxy-1,1′-biphenyl SPhos
1257247940-06-32-(Dicyclohexylphosphino)biphenyl Cy-JohnPhos
0698829-84-5Dicyclohexylphosphine
16856476-37-5Dicyclohexylphenylphosphine
063716523-54-9Dicyclohexylchlorophosphine
216056792-69-9Dicobalt hexacarbonyl tert-butyl acetylene CCTBA
074769304-37-61,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane
241983817-35-0Di-tert-butyl telluride Di-tert-butyltellurium
049413086-84-5Di-tert-butyl phosphite
21741055888-89-53-(Di-tert-butylphosphonium)propane sulfonate DTBPPS
2119564483-19-82-Di-tert-butylphosphino-2′,4′,6′-triisopropyl-1,1′-biphenyl tBuXPhos
2343857356-94-62-Di-tert-butylphosphino-3,4,5,6-tetramethyl-2′,4′,6′-tri-i-propylbiphenyl Me4-tBuXPhos
1651255837-19-52-(Di-tert-butylphosphino)-2′-methylbiphenyl tBuMePhos
23681262046-34-32-(Di-t-butylphosphino)-3-methoxy-6-methyl-2′,4′,6′-triisopropyl-1,1′-biphenyl RockPhos
20791017254-82-8(Di-tert-butylphosphino)ferrocene, tetrafluoroborate salt
1824224311-49-32-Di-tert-butylphosphino-2′-(N,N-dimethylamino)biphenyl tBu-DavePhos
1256224311-51-72-(Di-tert-butylphosphino)biphenyl JohnPhos
0730819-19-2Di-tert-butylphosphine
121732673-25-9Di-tert-butylphenylphosphine
1887479094-62-7Di-tert-butylmethylphosphine tetrafluoroborate salt
23511160861-53-92-(Di-tert-butylphosphino)-3,6-dimethoxy-2′,4′,6′-triisopropyl-1,1′-biphenyl tBuBrettPhos
2359Di-tert-butyl(n-hexyl)phosphonium tetrafluoroborate
1202137348-86-8Di-tert-butyl N,N-diisopropylphosphoramidite
1200117924-33-1Di-tert-butyl N,N-diethylphosphoramidite
03827439-69-2Di-n-butyl N,N-diethylcarbamoylphosphonate, tech.
096913716-10-4Di-tert-butylchlorophosphine
236029949-72-2Di-tert-butyl(n-butyl)phosphine
118817176-77-1Dibenzyl phosphite
0654108549-23-1Dibenzyl diisopropylphosphoramidite
21716418-56-0Diamyl amylphosphonate Dipentyl_pentylphosphonate
02716372-42-5Cyclohexyldiphenylphosphine Diphenylcyclohexylphosphine
0269102691-36-12-Cyanoethyl N,N,N’,N’-tetraisopropylphosphorodiamidite Bis(diisopropylamino)2-cyanoethoxyphosphine
039989992-70-12-Cyanoethyl N,N-diisopropylchlorophosphoramidite
2434139566-53-3 / 14781-45-4Copper(I)(II) hexafluoro-2,4-pentanedionate-vinyltrimethylsilane complex
212226189-59-31-Chloro-N,N,2-trimethyl-1-propenylamine Ghosez's_reagent
18992501-94-2tert-Butylphosphine
1726161118-67-8tert-Butylimino-tri(pyrrolidino)phosphorane Phosphazene_base_P1-t-Bu-tris(tetramethylene)_or_BTPP
1897511292-99-2(tert-Butylimido)tris(ethylmethylamino)tantalum Tris(ethylmethylamino)-tert-butylamido_tantalum
2157864150-47-0(tert-Butylimino)tris(ethylmethylamino)niobium
189569039-11-8(tert-Butylimino)tris(dimethylamino)tantalum Tris(dimethylamino)-tert-butylamido_tantalum
1713169896-41-7(tert-Butylimino)tris(diethylamino)tantalum Tris(diethylamino)-tert-butylamido_tantalum
2138210363-27-2(tert-Butylimino)tris(diethylamino)niobium TBTDEN
199998015-45-32-tert-Butylimino-2-diethylamino-1,3-dimethyl-perhydro-1,3,2-diazaphosphorine BEMP
2207852212-55-6(tert-Butylimino)bis(diethylamino)tantalum cyclopentadienylide
238732064-67-8tert-Butylhydrazine, electronic grade
04426002-34-2tert-Butyldiphenylphosphine
091418162-48-6tert-Butyldimethylchlorosilane tert-Butyldimethylsilyl_chloride
079227784-76-5tert-Butyl diethylphosphonoacetate (Diethoxyphosphoryl)acetic_acid_tert-butyl_ester
189193634-87-8tert-Butyldicyclohexylphosphine
019925979-07-1tert-Butyldichlorophosphine Dichloro-tert-butylphosphine
22431816254-91-7n-Butyldi(tert-butyl)phosphonium tetrafluoroborate
188689524-98-1N-(tert-Butoxycarbonyl)-a-phosphonoglycine trimethyl ester (±)-Trimethyl-Boc-a-phosphonoglycinate
2063121373-20-4Bis[2-(trimethylsilyl)ethyl] N,N-diisopropylphosphoramidite N,N-Diisopropyl-bis[2-trimethylsilyl)ethyl]phosphoroamidite
1437103421-62-1Bis(trimethylphosphine)nickel dichloride
1754869306-69-4Bis(3,4,5-trimethoxyphenyl)chlorophosphine
175513685-24-0Bis(4-trifluoromethylphenyl)chlorophosphine
060915274-43-8Bis(tributylphosphine)nickel(II) chloride Dichlorobis(tributylphosphine)nickel(II)
191229949-64-2Bis(o-tolyl)phosphine Di(2-tolyl)phosphine
191736042-94-1Bis(o-tolyl)chlorophosphine Di(2-tolyl)chlorophosphine
02105518-62-71,2-Bis(phosphino)ethane
032680510-04-91,2-Bis(phosphino)benzene
032680510-04-91,2-Bis(phosphino)benzene, 10% in Hexane
07901017-60-3Bis(4-methylphenyl)phosphine Di(4-tolyl)phosphine
194640672-08-0Bis(methylcyclopentadienyl)magnesium
175113685-30-8Bis(4-methoxyphenyl)chlorophosphine
175323039-97-6Bis(4-fluorophenyl)chlorophosphine
0974166172-69-6Bis(3,5-ditrifluoromethylphenyl)phosphine
0916142421-57-6Bis(3,5-ditrifluoromethylphenyl)chlorophosphine
1087100165-88-6(S)-(-)-2,2′-Bis(di-p-tolylphosphino)-1,1′-binaphthyl (S)-Tol-BINAP
108699646-28-3(R)-(+)-2,2′-Bis(di-p-tolylphosphino)-1,1′-binaphthyl (R)-Tol-BINAP
2007153305-67-02,2′-Bis(di-p-tolylphosphino)-1,1′-binaphthyl Tol-BINAP
0993145693-67-0(3S,4S)-(-)-Bis(diphenylphosphino)pyrrolidine (3S,4S)-PYROPHOS
041615629-92-21,3-[Bis(diphenylphosphino)propane]nickel(II) chloride
02126737-42-41,3-Bis(diphenylphosphino)propane
077167884-33-7(S)-(-)-1,2-Bis(diphenylphosphino)propane (S)-PROPHOS
071667884-32-6(R)-(+)-1,2-Bis(diphenylphosphino)propane (R)-PROPHOS
1650166330-10-5Bis(2-diphenylphosphinophenyl) ether (Oxydi-2,1-phenylene)bis(diphenylphosphine)
084677876-39-2(2S,4S)-(-)-Bis(diphenylphosphino)pentane (S,S)-BDPP
073996183-46-9(2R,4R)-(+)-Bis(diphenylphosphino)pentane (R,R)-BDPP
089612150-46-81,1′-Bis(diphenylphosphino)ferrocene 1,1'-Ferrocenediylbis(diphenylphosphine)
212966534-97-2Bis((2-diphenylphosphino)ethyl)ammonium chloride BPEA
030314647-23-51,2-[Bis(diphenylphosphino)ethane]nickel(II) chloride
05081663-45-21,2-Bis(diphenylphosphino)ethane DIPHOS
080064896-28-2(2S,3S)-(-)-Bis(diphenylphosphino)butane (S,S)-CHIRAPHOS
050974839-84-2(2R,3R)-(+)-Bis(diphenylphosphino)butane (R,R)-CHIRAPHOS
237884562-13-02,3-Bis(diphenylphosphino)butane rac-CHIRAPHOS
04127688-25-71,4-Bis(diphenylphosphino)butane
045976189-56-5(S)-(-)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl (S)-BINAP
032576189-55-4(R)-(+)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl (R)-BINAP
075898327-87-82,2′-Bis(diphenylphosphino)-1,1′-binaphthyl BINAP
030713991-08-71,2-Bis(diphenylphosphino)benzene
063171360-06-0Bis(3,5-dimethylphenyl)phosphine
1207194149-25-2Bis(3,5-dimethylphenyl)diethylaminophosphine
076374289-57-9Bis(3,5-dimethylphenyl)chlorophosphine
1054122708-97-8Bis(3,5-dimethyl-4-methoxyphenyl)phosphine
1056136802-85-2Bis(3,5-dimethyl-4-methoxyphenyl)chlorophosphine
2414185827-91-2Bis(dimethylamino-2-propoxy)copper(II) Cu(dmap)2
040056183-63-2Bis(diisopropylamino)chlorophosphine
2268136779-28-71,2-Bis((2S,5S)-2,5-diethylphospholano)benzene S,S-Et-DuPhos
0426685-83-6Bis(diethylamino)chlorophosphine
0252103099-52-11,3-Bis(dicyclohexylphosphino)propane
2042146960-90-91,1′-Bis(dicyclohexylphosphino)ferrocene
030423743-26-21,2-Bis(dicyclohexylphosphino)ethane
06821499-29-2Bis(dichlorophosphonyl)methane Methylenediphosphonic_dichloride
035828240-70-21,3-Bis(dichlorophosphino)propane
1451121954-50-51,2-Bis(di-tert-butylphosphinomethyl)benzene
106784680-95-51,1′-Bis(di-tert-butylphosphino)ferrocene
1961879904-89-92,2′-Bis(di-tert-butylphosphino)biphenyl
2060932710-63-9Di-tert-butyl(4-dimethylaminophenyl)phosphine A-Phos
21321284-72-6Bis(cyclopentadienyl)magnesium
20731021176-69-15-[Bis(cyclohexyl)phosphino]-1′,3′,5′-triphenyl-1,4′-bi-1H-pyrazole Cy-Bippyphos
1913102690-88-0Bis(2-cyanoethyl)-N,N-diisopropylphosphoramidite Bis(1-methylethyl)phosphoramidous_acid_bis(2-cyanoethyl)_ester
2067116163-96-31,3-Bis[bis(o-methoxyphenyl)phosphino]propane BDOMPP
1077135139-00-3(S)-(-)-2,2′-Bis[bis(3,5-dimethylphenyl)phosphino]-1,1′-binaphthyl
1075137219-86-4(R)-(+)-2,2′-Bis[bis(3,5-dimethylphenyl)phosphino]-1,1′-binaphthyl
2047894086-00-15-[Bis(tert-butyl)phosphino]-1′,3′,5′-triphenyl-1,4′-bi-1H-pyrazole BippyPhos
1275137156-22-0(S)-(+)-1,1′-Binaphthyl-2,2′-dioxychlorophosphine
1265155613-52-8(R)-(-)-1,1′-Binaphthyl-2,2′-dioxychlorophosphine
1302128575-34-81,1′-Bi-2-naphthol bis(trifluoromethanesulfonate) 1,1'-Bis(2-naphthol)_ditriflate
1915128753-68-4Benzyl-N,N-diisopropylchlorophosphoramidite Bis-(1-methylethyl)phosphoramidochloridous_acid_phenylmethyl_ester
2197905593-67-1(tert-Amylimino)tris(ethylmethylamino) tantalum
1889629654-53-1(tert-Amylimino)tris(dimethylamino)tantalum TAIMATa
1497108554-72-9Allyl tetraisopropylphosphorodiamidite
23061239478-87-55-[Di(1-adamantyl)phosphino](1,3,5-triphenyl-1H-pyrazol-4-yl)-1H-pyrazole
23065-[Di(1-adamantyl)phosphino](1,3,5-triphenyl-1H-pyrazol-4-yl)-1H-pyrazole