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Narceine methyl ester and narceine are potent alkaloids which were isolated from Corydalis longipes were found effective in vitro at very low concentration, i.e., 100~500 ppm against spore germination of some test plant pathogenic fungi (Alternaria solani, A. tagetica, Cercospora abelmoschi, Curvularia maculans, Erysiphe cichoracearum, E. pisi, Fusarium udum, Helminthosporium oryzae, H. penniseti, Ustilago cynodontis). George Bell Frankforter was
the first person to isolate narceine (in 1893) during his Ph.D. research for August Hofmann at the University of Berlin. Narceine has a weak morphine-like action, but is not much used in medicine. It may be administered in a pill, as a mild hypnotic and to allay cough; it is less depressant than morphine and does not constipate. Ethylnarceine is a narcotic, analgesic, and antitussive.
Status:
US Approved Allergenic Extract
(1994)
Source:
BLA103738
(1994)
Source URL:
First approved in 1994
Source:
BLA103738
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.
Status:
US Approved Allergenic Extract
(1994)
Source:
BLA103738
(1994)
Source URL:
First approved in 1994
Source:
BLA103738
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.
Status:
US Approved Allergenic Extract
(1994)
Source:
BLA103738
(1994)
Source URL:
First approved in 1994
Source:
BLA103738
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.
Status:
US Approved Allergenic Extract
(1994)
Source:
BLA103738
(1994)
Source URL:
First approved in 1994
Source:
BLA103738
Source URL:
Class (Stereo):
CHEMICAL (ACHIRAL)
Conditions:
Nickel (II) oxide is an olive gray powder, insoluble in water and soluble in acids. It is produced industrially and used mainly as an intermediate in the production of nickel alloys and as a hydrogenation catalyst. Long-term inhalation of NiO is damaging to the lungs, causing lesions and in some cases cancer.