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L-Threonic acid calcium salt

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Name

L-Threonic acid calcium salt

EINECS 615-158-1
CAS No. 70753-61-6 Density N/A
PSA 183.21000 LogP -4.64830
Solubility Soluble in water. Sparingly soluble in methanol. Melting Point >300 ºC
Formula C4H8 O5 . 1/2 Ca Boiling Point 518.9oC at 760 mmHg
Molecular Weight 310.271 Flash Point 281.7oC
Transport Information N/A Appearance N/A
Safety S22;S24/25 Risk Codes 36/37/38
Molecular Structure Molecular Structure of 70753-61-6 (L-Threonic acid calcium salt) Hazard Symbols Xi
Synonyms

Butanoicacid, 2,3,4-trihydroxy-, calcium salt (2:1), [R-(R*,S*)]-; Calcium L-threonate

Article Data 9

L-Threonic acid calcium salt Synthetic route

50-81-7

ascorbic acid

70753-61-6

calcium L-threonate

Conditions
ConditionsYield
With dihydrogen peroxide; calcium carbonate In water at 5 - 70℃; for 18h;94.6%
Stage #1: ascorbic acid With calcium carbonate In water at 0 - 5℃;
Stage #2: With dihydrogen peroxide In water at 5 - 75℃; for 18h;
Stage #3: With methanol In water at 20 - 50℃; for 12h;
94.6%
With dihydrogen peroxide; calcium carbonate In water at 0 - 20℃; for 18h;85%
70753-61-6

calcium L-threonate

21730-93-8

L-threonic acid-4-lactone

Conditions
ConditionsYield
With oxalic acid; toluene-4-sulfonic acid In acetonitrile for 3h; Reflux;94%
With oxalic acid; toluene-4-sulfonic acid In acetonitrile Reflux;93%
67-56-1

methanol

70753-61-6

calcium L-threonate

88824-11-7

methyl 2,4-dibromo-2,4-dideoxy-L-erythronate

Conditions
ConditionsYield
Stage #1: calcium L-threonate With hydrogen bromide; acetic acid for 24h;
Stage #2: methanol Heating;
90.2%
Stage #1: calcium L-threonate With hydrogen bromide In acetic acid for 24h;
Stage #2: methanol In acetic acid at 20℃; for 14h; Reflux;
90.2%
With hydrogen bromide 1.) acetic acid, room temperature, 24 h, 2.) boiled, 2 h; Yield given. Multistep reaction;
2687-43-6

O-benzylhydoxylamine hydrochloride

70753-61-6

calcium L-threonate

97764-61-9

L-threonic acid (benzyloxy)amide

Conditions
ConditionsYield
With sodium hydrogencarbonate; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In water for 4h;72.4%
98-88-4

benzoyl chloride

70753-61-6

calcium L-threonate

538368-86-4

2′,3′-di-O-benzoyl-L-threonolactone

Conditions
ConditionsYield
Stage #1: calcium L-threonate With Dowex 50WX4-50 In water at 70℃; for 0.5h;
Stage #2: With toluene-4-sulfonic acid In acetonitrile for 1h; Heating;
Stage #3: benzoyl chloride With pyridine at 20℃; for 10h;
60%
98-88-4

benzoyl chloride

70753-61-6

calcium L-threonate

91345-19-6

2′-O-benzoyl-L-threonolactone

Conditions
ConditionsYield
Stage #1: calcium L-threonate In water at 70℃; for 0.5h;
Stage #2: With toluene-4-sulfonic acid In acetonitrile for 23h; Reflux;
Stage #3: benzoyl chloride With 1H-imidazole In acetonitrile at 0 - 20℃;
45%
70753-61-6

calcium L-threonate

117069-13-3

(2S,3S)-2,4-Dibromo-3-hydroxy-butyric acid

Conditions
ConditionsYield
With hydrogen bromide; acetic anhydride; acetic acid for 24h; Ambient temperature;
With hydrogen bromide In acetic acid for 1.5h; Ambient temperature;
67-56-1

methanol

70753-61-6

calcium L-threonate

137460-62-9

methyl (2R,3S)-2,3,4-trihydroxybutanoate

Conditions
ConditionsYield
With hydrogenchloride at 37℃; for 120h;
70753-61-6

calcium L-threonate

7306-96-9

L-threonic acid

Conditions
ConditionsYield
With Amberlite IR-120 In water at 50℃;

L-Threonic acid calcium salt Chemical Properties

Molecular Structure:

Molecular Formula: C8H14CaO10
Molecular Weight: 310.2688
Product Name: L-Threonic acid calcium salt
Synonyms of L-Threonic acid calcium salt (CAS NO.70753-61-6): Calcium threonate ; Butanoic acid, 2,3,4-trihydroxy-, calcium salt (2:1), (2R,3S)- ; Butanoic acid, 2,3,4-trihydroxy-, calcium salt (2:1), (R-(R*,S*))- ; Calcium l-threonate ; Threonine, calcium salt ; UNII-HBB4YPO93U
CAS NO: 70753-61-6
Classification Code: Ca (Calcium) Compounds ; Classes of Metal Compounds ; Typical Metal Compounds
Melting point: >300 °C 
Flash Point: 281.7 °C
Enthalpy of Vaporization: 91.09 kJ/mol
Boiling Point: 518.9 °C at 760 mmHg
Vapour Pressure: 6.17E-13 mmHg at 25°C

L-Threonic acid calcium salt Uses

  L-Threonic acid calcium salt (CAS NO.70753-61-6) is used as calcium nutrition Enhancer.

L-Threonic acid calcium salt Safety Profile

Hazard Codes of L-Threonic acid calcium salt (CAS NO.70753-61-6): IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 22-24/25-37/39-26 
S22: Do not breathe dust. 
S24/25: Avoid contact with skin and eyes. 
S37/39: Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3

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