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Choline glycerophosphate Manufacturer/High quality/Best price/In stock
Cas No: 28319-77-9
USD $ 2.0-2.0 / Kilogram 1 Kilogram 1-50 Metric Ton/Month Dayang Chem (Hangzhou) Co.,Ltd. Contact Supplier
GPC
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No Data 1 Metric Ton 1000 Metric Ton/Day Shanghai AngewChem Co., Ltd. Contact Supplier
Alpha GPC powder
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USD $ 1.0-1.0 / Kilogram 1 Kilogram 300 Metric Ton/Year EXCELLENT HEALTH PRODUCTS CO.,LTD Contact Supplier
Factory bulk supply nootropic alpha GPC 99% powder
Cas No: 28319-77-9
USD $ 220.0-250.0 / Kilogram 1 Kilogram 100 Metric Ton/Year Hubei Vanz Pharm Co.,Ltd Contact Supplier
Facory supply 99% Choline glycerophosphate Alpha-GPC Alpha GPC powder 50% 99% in stock
Cas No: 28319-77-9
No Data 1 Kilogram 1000 Kilogram/Month Shaanxi Mingqi Chemical Co., Ltd Contact Supplier
Choline alfoscerate(GPC)
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No Data 5 Gram we have enough ingredient Metric Ton/Day Hunan Warrant Chiral Pharmaceutical Co., Ltd. Contact Supplier
Alpha GPC/choline alfoscerate/28319-77-9
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USD $ 300.0-400.0 / Kilogram 1 Kilogram 1000 Kilogram/Month Binbo Biological Co., Ltd Contact Supplier
Alpha GPC
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No Data 1 Kilogram 1 Metric Ton/Month CHANGZHOU HANGYU PHARMACEUTICAL TECHNOLOGY CO., LTD Contact Supplier
High purity choline alfoscerate powder 50% 99% alpha-gpc Alpha GPC
Cas No: 28319-77-9
USD $ 1.0-2.0 / Kilogram 1 Kilogram 10 Metric Ton/Day Shaanxi Greenyo Biotech Co., Ltd. Contact Supplier
Manufacturer Supply Alpha GPC Choline Alfoscerate Powder
Cas No: 28319-77-9
USD $ 180.0-230.0 / Kilogram 1 Kilogram 1 Metric Ton/Week Shaanxi Yuantai Biological Technology Co., Ltd. Contact Supplier

28319-77-9 Usage

Definition

ChEBI: A member of the class of phosphocholines that is the choline ester of sn-glycero-3-phosphate. It is one of the major osmolyte in the renal medullary cells.

Chemical Properties

White waxy solid
InChI:InChI=1/C8H20NO6P/c1-9(2,3)4-5-14-16(12,13)15-7-8(11)6-10/h8,10-11H,4-7H2,1-3H3/t8-/m1/s1

28319-77-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name choline alfoscerate

1.2 Other means of identification

Product number -
Other names Choline alfoscerate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:28319-77-9 SDS

28319-77-9Synthetic route

(2R)-3-chloro-1,2-propanediol
57090-45-6

(2R)-3-chloro-1,2-propanediol

phosphorylcholine chloride
107-73-3

phosphorylcholine chloride

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Stage #1: phosphorylcholine chloride With potassium hydroxide In methanol for 1h;
Stage #2: (2R)-3-chloro-1,2-propanediol In methanol at 65℃; for 16h; Temperature;
99%
Stage #1: phosphorylcholine chloride With potassium hydroxide In ethanol for 0.5h;
Stage #2: (2R)-3-chloro-1,2-propanediol In ethanol at 75 - 85℃; for 6h;
79.6%
(R)-3-glycerylcycloethyl phosphate

(R)-3-glycerylcycloethyl phosphate

trimethylamine
75-50-3

trimethylamine

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
In ethanol at 20℃; for 5h;92.11%
(R)-1,2-diacetoxy glycerylphosphoryl choline
54672-38-7

(R)-1,2-diacetoxy glycerylphosphoryl choline

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
With potassium carbonate In methanol at 20℃; for 0.0833333h;91%
(2R)-3-chloro-1,2-propanediol
57090-45-6

(2R)-3-chloro-1,2-propanediol

phosphorylcholine chloride potassium salt

phosphorylcholine chloride potassium salt

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
at 60 - 65℃; for 48h; Temperature;78.6%
(2R)-3-chloro-1,2-propanediol
57090-45-6

(2R)-3-chloro-1,2-propanediol

C5H13NO4P(1-)*Cl(1-)*2Na(1+)

C5H13NO4P(1-)*Cl(1-)*2Na(1+)

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
at 80 - 85℃; for 50h;77.8%
In ethanol Reflux;7.8 g
C8H21NO6P(1+)*Cl(1-)

C8H21NO6P(1+)*Cl(1-)

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
With 717 type ion exchange resin In ethanol; water at 0℃; for 4h;77%
phosphorylcholine chloride potassium salt

phosphorylcholine chloride potassium salt

(2S)-3,4-dimethoxybenzylglycidol

(2S)-3,4-dimethoxybenzylglycidol

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
In methanol; water Solvent; Reflux;72.3%
(R)-4-bromomethyl-2-methyl-2-ethyl-1,3-dioxolane

(R)-4-bromomethyl-2-methyl-2-ethyl-1,3-dioxolane

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Stage #1: (R)-4-bromomethyl-2-methyl-2-ethyl-1,3-dioxolane With sodium hydroxide In isopropyl alcohol at 82℃; for 30h;
Stage #2: With sulfuric acid In ethanol; water; isopropyl alcohol
67.9%
phosphorylcholine chloride
107-73-3

phosphorylcholine chloride

(R)-oxiranemethanol
57044-25-4

(R)-oxiranemethanol

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
In ethanol at 75 - 85℃; for 12h;67.5%
C9H15IO2

C9H15IO2

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Stage #1: C9H15IO2 With potassium hydroxide In ethanol at 85℃; for 15h;
Stage #2: With hydrogenchloride In methanol; ethanol; water
66.5%
phosphorylcholine chloride potassium salt

phosphorylcholine chloride potassium salt

(R)-4-chloromethyl-2,2-dimethyl-1,3-dioxolane
57044-24-3

(R)-4-chloromethyl-2,2-dimethyl-1,3-dioxolane

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Stage #1: (R)-4-chloromethyl-2,2-dimethyl-1,3-dioxolane With potassium carbonate In methanol at 65℃; for 18h;
Stage #2: phosphorylcholine chloride potassium salt With hydrogenchloride In methanol; water
65.1%
all cis-5,8,11,14,17-eicosapentaenoic acid
10417-94-4

all cis-5,8,11,14,17-eicosapentaenoic acid

L-dipalmitoylphosphatidylcholine
63-89-8

L-dipalmitoylphosphatidylcholine

A

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

B

1-(5Z,8Z,11Z,14Z,17Z)-eicosapentaenoyl-sn-glycero-3-phosphocholine

1-(5Z,8Z,11Z,14Z,17Z)-eicosapentaenoyl-sn-glycero-3-phosphocholine

C

PC(36:5)

PC(36:5)

Conditions
ConditionsYield
With Rhizomucor miehei lipase Product distribution; Substitution; hydrolysis; Enzymatic reaction;
(-)(R)-glycerol-1.2-isopropylidene ether-3--sulfate

(-)(R)-glycerol-1.2-isopropylidene ether-3--sulfate

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
With water at 20 - 25℃; Behandlung des Reaktionsprodukts mit BaCO3;
(S)-glycidyl phosphorylcholine

(S)-glycidyl phosphorylcholine

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
With water; potassium carbonate for 5h; Reflux;0.13 g
siladenoserinol A
1417365-52-6

siladenoserinol A

A

C31H57NO7
1426535-84-3

C31H57NO7

B

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Stage #1: siladenoserinol A With sodium hydroxide In methanol for 2h; Reflux;
Stage #2: With hydrogenchloride In water
phosphorylcholine chloride, calcium salt
4826-71-5

phosphorylcholine chloride, calcium salt

(R)-oxiranemethanol
57044-25-4

(R)-oxiranemethanol

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Stage #1: phosphorylcholine chloride, calcium salt With sodium carbonate In water at 20℃; for 1h;
Stage #2: (R)-oxiranemethanol Reagent/catalyst; Concentration; Reflux;
289 g
C10H22NO7P

C10H22NO7P

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
With hydrogenchloride In water at 20℃; for 5h; pH=1 - 2;45.2 g
C11H24NO7P

C11H24NO7P

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
With hydrogenchloride In water at 20℃; for 5h; pH=1 - 2;45.3 g
(R)-2-(oxiran-2-ylmethoxy)-1,3,2-dioxaphospholane

(R)-2-(oxiran-2-ylmethoxy)-1,3,2-dioxaphospholane

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: oxygen / dichloromethane / 20 °C
2: ethanol / 8 h / 0 °C / Reflux
3: 717 type ion exchange resin / ethanol; water / 4 h / 0 °C
View Scheme
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

n-hexadecanoyl chloride
112-67-4

n-hexadecanoyl chloride

1-palmitoyl-sn-glycero-3-phosphocholine
17364-16-8, 17364-17-9, 17364-18-0, 14863-27-5

1-palmitoyl-sn-glycero-3-phosphocholine

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: n-hexadecanoyl chloride With TEA In isopropyl alcohol at 25℃; for 0.25h; Further stages.;
97%
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Reflux;
Stage #2: n-hexadecanoyl chloride With triethylamine at 20℃; for 1h;
90%
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: n-hexadecanoyl chloride With TEA In isopropyl alcohol at 25℃; for 0.25h; Further stages.;
80%
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Reflux;
Stage #2: n-hexadecanoyl chloride With triethylamine In isopropyl alcohol at 25℃; for 0.25h;
80%
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol at 100℃; for 1h;
Stage #2: n-hexadecanoyl chloride With triethylamine In isopropyl alcohol at 20℃;
31%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Stearoyl chloride
112-76-5

Stearoyl chloride

1-stearoyl-sn-glycero-3-phosphocholine
19420-57-6

1-stearoyl-sn-glycero-3-phosphocholine

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: Stearoyl chloride With TEA In isopropyl alcohol at 20℃; for 0.583333h; Further stages.;
97%
With di(n-butyl)tin oxide; triethylamine70%
(Z)-9-octadecenoyl chloride
112-77-6

(Z)-9-octadecenoyl chloride

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

1-oleoyl-L-lysophosphatidylcholine
19420-56-5

1-oleoyl-L-lysophosphatidylcholine

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: (Z)-9-octadecenoyl chloride With TEA In isopropyl alcohol at 20℃; for 0.583333h; Further stages.;
97%
n-dodecanoyl chloride
112-16-3

n-dodecanoyl chloride

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

LPC (12:0)
20559-18-6

LPC (12:0)

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: n-dodecanoyl chloride With TEA In isopropyl alcohol at 20℃; for 0.583333h; Further stages.;
97%
aqueous cadmium chloride

aqueous cadmium chloride

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

sn-glycero-3-phosphocholine cadmium chloride complex

sn-glycero-3-phosphocholine cadmium chloride complex

Conditions
ConditionsYield
In methanol; water at 0℃; for 4h;91%
aqueous cadmium chloride

aqueous cadmium chloride

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

1-α-glycerophosphocholine cadmium chloride salt

1-α-glycerophosphocholine cadmium chloride salt

Conditions
ConditionsYield
In methanol; water91%
cis-Octadecenoic acid
112-80-1

cis-Octadecenoic acid

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

dioleoylphosphatidylcholine
4235-95-4

dioleoylphosphatidylcholine

Conditions
ConditionsYield
With dmap; Hyflo Super-Cel; dicyclohexyl-carbodiimide In chloroform at 30℃;90.3%
With dmap; dicyclohexyl-carbodiimide In chloroform at 20℃; for 12h; Reagent/catalyst; Solvent; Darkness;82.33%
triisopropylsilyl trifluoromethanesulfonate
80522-42-5

triisopropylsilyl trifluoromethanesulfonate

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

C17H40NO6PSi

C17H40NO6PSi

Conditions
ConditionsYield
With 1H-imidazole In N,N-dimethyl-formamide at 0 - 20℃; for 12h; Inert atmosphere; regioselective reaction;87%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Stearoyl chloride
112-76-5

Stearoyl chloride

1-stearoyl-2-lyso-sn-glycero-3-phosphocholine
19420-57-6

1-stearoyl-2-lyso-sn-glycero-3-phosphocholine

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine; Stearoyl chloride With di(n-butyl)tin oxide In ethanol for 0.5h; Reflux;
Stage #2: Stearoyl chloride With triethylamine In tetrahydrofuran at 50℃; for 3h;
83.3%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

2-[[[(carboxymethyl)oxy]hydroxyphosphinyl]oxy]-N,N,N-trimethyl-ethanaminium
853798-56-8

2-[[[(carboxymethyl)oxy]hydroxyphosphinyl]oxy]-N,N,N-trimethyl-ethanaminium

Conditions
ConditionsYield
With ruthenium trichloride; sodium periodate; water In acetonitrile at 0℃;82%
With ruthenium trichloride; sodium periodate In water at 20℃; for 2h; Product distribution / selectivity; Cooling in ice-water bath;
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

butyryl chloride
141-75-3

butyryl chloride

C12H26NO7P

C12H26NO7P

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: butyryl chloride With dmap In isopropyl alcohol at 25℃; for 48h; Further stages.;
82%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

1-hexadecylcarboxylic acid
57-10-3

1-hexadecylcarboxylic acid

L-dipalmitoylphosphatidylcholine
63-89-8

L-dipalmitoylphosphatidylcholine

Conditions
ConditionsYield
With dmap; Hyflo Supre-Cel; dicyclohexyl-carbodiimide In chloroform at 30℃;80%
Stage #1: L-glycero-3-phosphorylcholine; 1-hexadecylcarboxylic acid With dmap In dichloromethane for 0.333333h;
Stage #2: With dicyclohexyl-carbodiimide In dichloromethane for 8h;
80.3%
Stage #1: 1-hexadecylcarboxylic acid With 1,1'-carbonyldiimidazole In chloroform-d1 at 20℃; for 0.75h; Condensation;
Stage #2: L-glycero-3-phosphorylcholine With 1,8-diazabicyclo[5.4.0]undec-7-ene In chloroform-d1 at 20℃; for 24h; Acylation;
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

n-valeryl chloride
638-29-9

n-valeryl chloride

C13H28NO7P

C13H28NO7P

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: n-valeryl chloride With dmap In isopropyl alcohol at 25℃; for 48h; Further stages.;
80%
3-(tritylthio) propanoic acid
27144-18-9

3-(tritylthio) propanoic acid

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

bis(tritylmercaptopropionate)glycerophosphorylcholine

bis(tritylmercaptopropionate)glycerophosphorylcholine

Conditions
ConditionsYield
Stage #1: 3-(tritylthio) propanoic acid With 1,1'-carbonyldiimidazole In dimethyl sulfoxide for 2h;
Stage #2: L-glycero-3-phosphorylcholine With 1,8-diazabicyclo[5.4.0]undec-7-ene In dimethyl sulfoxide at 20℃;
80%
With 1,8-diazabicyclo[5.4.0]undec-7-ene; 1,1'-carbonyldiimidazole In dimethyl sulfoxide at 20℃; for 6h; Time;
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

1,2-α-eleostearoyl-sn-glycero-3-phosphocholine

1,2-α-eleostearoyl-sn-glycero-3-phosphocholine

Conditions
ConditionsYield
With 4-pyrrolidin-1-ylpyridine; dicyclohexyl-carbodiimide In chloroform for 20h;77%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

Hexanoyl chloride
142-61-0

Hexanoyl chloride

L-alpha-caproyl lysophosphatidylcholine
58445-96-8

L-alpha-caproyl lysophosphatidylcholine

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Heating;
Stage #2: Hexanoyl chloride With dmap In isopropyl alcohol at 25℃; for 48h; Further stages.;
75%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

6-((1,1-dimethylethyl)diphenylsilyloxy)hexanoic acid
122846-05-3

6-((1,1-dimethylethyl)diphenylsilyloxy)hexanoic acid

C52H76NO10PSi2

C52H76NO10PSi2

Conditions
ConditionsYield
Stage #1: 6-((1,1-dimethylethyl)diphenylsilyloxy)hexanoic acid With 1,1'-carbonyldiimidazole In dichloromethane at 35℃; for 4h;
Stage #2: L-glycero-3-phosphorylcholine With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane; dimethyl sulfoxide at 20 - 40℃; for 20h;
71%
tetradecylthioacetic Acid
2921-20-2

tetradecylthioacetic Acid

L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

1,2-di-[2-(tetradecylthio)acetyl]-sn-glycero-3-phosphocholine
636589-28-1

1,2-di-[2-(tetradecylthio)acetyl]-sn-glycero-3-phosphocholine

Conditions
ConditionsYield
Stage #1: tetradecylthioacetic Acid With 1,1'-carbonyldiimidazole In dichloromethane at 20℃; for 2.75h; Inert atmosphere;
Stage #2: L-glycero-3-phosphorylcholine With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane; dimethyl sulfoxide at 20℃; for 16h; Inert atmosphere;
70%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

3-O-acetylbetulinic acid chloride
59868-82-5

3-O-acetylbetulinic acid chloride

1-acetylbetulinyl-Sn-glycero-3-phosphocholine

1-acetylbetulinyl-Sn-glycero-3-phosphocholine

Conditions
ConditionsYield
Stage #1: L-glycero-3-phosphorylcholine With di(n-butyl)tin oxide In isopropyl alcohol for 1h; Reflux;
Stage #2: 3-O-acetylbetulinic acid chloride With triethylamine In isopropyl alcohol at 20℃; for 5h;
69%
L-glycero-3-phosphorylcholine
28319-77-9

L-glycero-3-phosphorylcholine

trityl chloride
76-83-5

trityl chloride

1-O-trityl-sn-glycero-3-phosphocholine
103675-56-5

1-O-trityl-sn-glycero-3-phosphocholine

Conditions
ConditionsYield
With zinc(II) chloride In N,N-dimethyl-formamide at 5℃; for 10h;67%
With zinc(II) chloride In N,N-dimethyl-formamide at 5℃;51.2%
Stage #1: L-glycero-3-phosphorylcholine With zinc(II) chloride In N,N-dimethyl-formamide at 4℃; for 0.5h;
Stage #2: trityl chloride In N,N-dimethyl-formamide at 4℃;
50%

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