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65-22-5

Basic Information
CAS No.: 65-22-5
Name: Pyridoxal hydrochloride
Article Data: 5
Molecular Structure:
Molecular Structure of 65-22-5 (Pyridoxal hydrochloride)
Formula: C8H9NO3.HCl
Molecular Weight: 203.625
Synonyms: 4-Pyridinecarboxaldehyde,3-hydroxy-5-(hydroxymethyl)-2-methyl-, hydrochloride (9CI);Pyridoxal,hydrochloride (7CI,8CI);2-Methyl-3-hydroxy-4-formyl-5-hydroxymethylpyridinehydrochloride;3-Hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxaldehydehydrochloride;3-Hydroxy-5-hydroxymethyl-2-methylisonicotinaldehyde hydrochloride;
EINECS: 200-602-5
Melting Point: 173 °C (dec.)(lit.)
Boiling Point: 412.8 °C at 760 mmHg
Flash Point: 203.5 °C
Solubility: Soluble in water and ethanol.
Appearance: White to off-white crystalline powder
Hazard Symbols: IrritantXi
Risk Codes: 20/21/22-36/37/38
Safety: 24/25-22-36-26
PSA: 70.42000
LogP: 1.20240
Synthetic route
14029-59-5

Nα-(3-hydroxy-5-hydroxymethyl-2-methyl-pyridin-4-ylmethylene)-histidine

A

65-22-5

pyridoxal hydrochloride

B

71-00-1

L-histidine

Conditions
ConditionsYield
With buffer solution In various solvent(s) at 25℃; Rate constant;
66-72-8

pyridoxal

65-22-5

pyridoxal hydrochloride

Conditions
ConditionsYield
With hydrogenchloride In water at 20℃; for 72h;
58-56-0

pyridoxal hydrochloride

65-22-5

pyridoxal hydrochloride

Conditions
ConditionsYield
With hydrogenchloride; manganese(IV) oxide In water at 55℃; for 28h; Temperature;88 g
With acetic acid; sodium nitrite In water at 5 - 20℃; for 2h; Reagent/catalyst; Solvent;
With hydrogenchloride; manganese(IV) oxide In water at 20℃; for 6h;
65-22-5

pyridoxal hydrochloride

89-25-8

edaravone

854010-13-2

1-(5-hydroxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-6-methyl-1,3-dihydro-furo[3,4-c]pyridin-7-ol

Conditions
ConditionsYield
With sodium carbonate In water at 10 - 20℃; pH=2.04; Reagent/catalyst; pH-value;99%
With sodium hydroxide In water at 20℃; for 0.5h;6.8%
With sodium hydroxide In water at 20 - 30℃; for 2h; pH=6.3 - 12.1; Time;
64-17-5

ethanol

65-22-5

pyridoxal hydrochloride

6151-12-8

1-ethoxy-7-hydroxy-6-methyl-1,3-dihydrofuro[3,4-c]pyridin-5-ium chloride

Conditions
ConditionsYield
at 60℃; for 2h;99%
at 60℃; for 2h;99%
for 1.5h; Reflux;93%
65-22-5

pyridoxal hydrochloride

67-63-0

isopropyl alcohol

7-hydroxy-1-isopropoxy-6-methyl-1,3-dihydrofuro[3,4-c]pyridin-5-ium chloride

Conditions
ConditionsYield
at 60℃; for 2h;99%
67-56-1

methanol

65-22-5

pyridoxal hydrochloride

7-hydroxy-1-methoxy-6-methyl-1,3-dihydrofuro[3,4-c]pyridin-5-ium chloride

Conditions
ConditionsYield
for 2h; Reflux;98%
65-22-5

pyridoxal hydrochloride

107-15-3

ethylenediamine

C18H22N4O4

Conditions
ConditionsYield
With potassium hydroxide In ethanol for 1h; pH=6.5; Heating;97%
65-22-5

pyridoxal hydrochloride

107-15-3

ethylenediamine

88969-07-7

N,N′-ethylenebis-(pyridoxylideneiminato)

Conditions
ConditionsYield
Stage #1: pyridoxal hydrochloride With triethylamine In methanol
Stage #2: ethylenediamine In methanol for 5h;
96.5%
1631-26-1

1-benzyl-1H-pyrrole-2,5-dione

5680-79-5

glycine ethyl ester hydrochloride

65-22-5

pyridoxal hydrochloride

methyl (1R*,3S*,3aR*,6aS*)-5-benzyl-3-(3-hydroxy-5-(hydroxymethyl)-2-methylpyridin-4-yl)-4,6-dioxooctahydropyrrolo[3,4-c]pyrrole-1-carboxylate

Conditions
ConditionsYield
With silver(I) acetate; triethylamine In ethanol at 70℃; diastereoselective reaction;96%
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Chemistry

IUPAC Name: 3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4 carbaldehyde hydrochloride
The MF of 3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4 carbaldehyde hydrochloride (65-22-5) is C8H10ClNO3.

                                         
The MW of 3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4 carbaldehyde hydrochloride (65-22-5) is 203.62.
Synonyms of 3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4 carbaldehyde hydrochloride (65-22-5): 4-Pyridinecarboxaldehyde, 3-hydroxy-5- (hydroxymethyl)-2-methyl-, hydrochloride ; Pyridoxal, hydrochloride ; 2-Methyl-3-hydroxy-4-formyl-5-hydroxymethylpyridine hydrochloride ; 3-Hydroxy-5-(hydroxymethyl)-2-methyl-4-pyridinecarboxaldehyde hydrochloride ; 3-Hydroxy-5-(hydroxymethyl)-2-methylisonicotinaldehyde, hydrochloride 
Product Categories: Biochemistry;Vitamin Derivatives;Vitamins
Form: White to off-white crystalline powder
Flash Point: 203.5 °C
Boiling Point: 412.8 °C
Melting Point: 172-174 °C
Storage temp: -20 °C
Sensitive: Hygroscopic
EINECS: 200-602-5
Merck: 14,7978
BRN: 3656994

Uses

   3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4 carbaldehyde hydrochloride (65-22-5) is used as biochemical research and drug research, as a nutritional agent.

Production

Pyridoxal oxime derived from vitamin B6 reacted with hydroxylamine hydrochloride,then  reacted with the silver with reaction of nitrite.

Toxicity Data With Reference

1.    

orl-rat LD50:2150 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
2.    

scu-rat LD50:530 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
3.    

ivn-rat LD50:320 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
4.    

orl-mus LD50:1800 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
5.    

ipr-mus LD50:400 mg/kg

    NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD691-490 .
6.    

scu-mus LD50:530 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
7.    

ivn-mus LD50:390 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
8.    

ivn-cat LD50:160 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
9.    

ims-cat LD50:152 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research. 11 (1961),922.
10.    

ivn-rbt LD50:465 mg/kg

    ARZNAD    Arzneimittel-Forschung. Drug Research.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Poison by intramuscular, intravenous, and intraperitoneal routes. Moderately toxic by ingestion and subcutaneous routes. When heated to decomposition it emits very toxic fumes of NOx and HCl. See also ALDEHYDES.
Safety information of 3-Hydroxy-5-(hydroxymethyl)-2-methylpyridine-4 carbaldehyde hydrochloride (65-22-5):
Hazard Codes  Xi
Risk Statements 
20/21/22  Harmful by inhalation, in contact with skin and if swallowed
36/37/38  Irritating to eyes, respiratory system and skin
Safety Statements 
24/25  Avoid contact with skin and eyes
22  Do not breathe dust
36  Wear suitable protective clothing
26  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
WGK Germany  2
RTECS  UV1225000
F  8