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Related CAS#:
67037-37-0 70052-12-9
66640-93-5 68278-23-9
70050-56-5 81645-68-3
69955-42-6 96020-91-6

70052-12-9

70052-12-9 structure
70052-12-9 structure
  • Name: Eflornithine
  • Chemical Name: Eflornithine
  • CAS Number: 70052-12-9
  • Molecular Formula: C6H12F2N2O2
  • Molecular Weight: 182.16800
  • Catalog: Research Areas Others
  • Create Date: 2018-12-04 18:11:19
  • Modify Date: 2024-01-04 12:01:25
  • Eflornithine is a specific, irreversible inhibitor of the enzyme ornithine decarboxylase. Eflornithine is a medication for the treatment of African trypanosomiasis and excessive facial hair growth in women.
Name Eflornithine
Synonyms 2-(difluoromethyl)-2,5-diaminopentanoic acid
2-(2-ethyl-2,3-dihydro-2-benzofuranyl)-4,5-dihydro-1H-imidazole hydrochloride
MFCD00242734
2,5-diamino-2-(difluoromethyl)pentanoic acid
2-Ethyl-2-(imidazolin-2-yl)-2,3-dihydrobenzofuran hydrochloride
Efaroxan HCl
H-DL-(a-difluoromethyl)Orn-OH
Efaroxan hydrochloride
Description Eflornithine is a specific, irreversible inhibitor of the enzyme ornithine decarboxylase. Eflornithine is a medication for the treatment of African trypanosomiasis and excessive facial hair growth in women.
Related Catalog
In Vivo Eflornithine is the only new molecule registered for the treatment of human African trypanosomiasis over the last 50 years. It is the drug used mainly as a back-up for melarsoprol refractory Trypanosoma brucei gambiense cases[1]. In subjects with excessive, unwanted facial hair, eflornithine 15% cream is superior to placebo in reducing hair growth. After 24 weeks' treatment, 58% of eflornithine and 34% of placebo subjects have at least some improvement in facial hirsutism[2]. The hair growth inhibitory activity of eflornithine is significantly enhanced when the eflornithine cream is applied onto a mouse skin area pretreated with microneedles[3]. Treatment of coarctation hypertensive rats with eflornithine results in a normalization of the contractile intensity to KCI and norepinephrine and relaxations to acetylcholine by 14 days of hypertension[4].
Animal Admin Mice: The skin area where the hair is removed is then treated with the eflornithine hydrochloride 13.9% cream (∼50 mg per mouse per treatment) using a spatula 2 times a day in an interval of at least 8 h for a maximum period of 36 days[3].
References

[1]. Burri C, et al. Eflornithine for the treatment of human African trypanosomiasis. Parasitol Res. 2003 Jun;90 Supp 1:S49-52.

[2]. Balfour JA, et al. Topical eflornithine. Am J Clin Dermatol. 2001;2(3):197-201; discussion 202.

[3]. Kumar A, et al. A method to improve the efficacy of topical eflornithine hydrochloride cream. Drug Deliv. 2016 Jun;23(5):1495-501.

[4]. Lipke DW, et al. Eflornithine alters changes in vascular responsiveness associated with coarctation hypertension. Clin Exp Hypertens. 1997 Apr;19(3):297-312.
Density 1.293g/cm3
Boiling Point 347ºC at 760 mmHg
Molecular Formula C6H12F2N2O2
Molecular Weight 182.16800
Flash Point 163.7ºC
Exact Mass 182.08700
PSA 89.34000
LogP 1.17310
Storage condition 2-8℃

CHEMICAL IDENTIFICATION

RTECS NUMBER :
RM2981600
CHEMICAL NAME :
Ornithine, 2-(difluoromethyl)-
CAS REGISTRY NUMBER :
70052-12-9
LAST UPDATED :
199706
DATA ITEMS CITED :
11
MOLECULAR FORMULA :
C6-H12-F2-N2-O2
MOLECULAR WEIGHT :
182.20
WISWESSER LINE NOTATION :
Z3XZVQYFF

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
800 mg/kg/4D-I
TOXIC EFFECTS :
Gastrointestinal - nausea or vomiting Blood - thrombocytopenia
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Human - woman
DOSE/DURATION :
67 mg/kg/40M-C
TOXIC EFFECTS :
Cardiac - cardiomyopathy including infarction Cardiac - pulse rate Vascular - BP lowering not characterized in autonomic section
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
9084 mg/kg/2W-I
TOXIC EFFECTS :
Gastrointestinal - nausea or vomiting Blood - thrombocytopenia
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
1600 mg/kg
SEX/DURATION :
female 4-7 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
1 gm/kg
SEX/DURATION :
female 16-20 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Newborn - behavioral Reproductive - Effects on Newborn - physical
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
2500 mg/kg
SEX/DURATION :
female 15-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Specific Developmental Abnormalities - urogenital system Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain) Reproductive - Effects on Newborn - biochemical and metabolic
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
500 mg/kg
SEX/DURATION :
female 11-13 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Effects on Embryo or Fetus - other effects to embryo
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
2500 mg/kg
SEX/DURATION :
female 13-17 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - other effects to embryo Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain) Reproductive - Effects on Newborn - physical
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intrauterine
DOSE :
50 ug/kg
SEX/DURATION :
female 4 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - other measures of fertility
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Subcutaneous
DOSE :
800 mg/kg
SEX/DURATION :
female 8 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - litter size (e.g. # fetuses per litter; measured before birth)

MUTATION DATA

TEST SYSTEM :
Rodent - rat
DOSE/DURATION :
2800 mg/kg
REFERENCE :
BBACAQ Biochimica et Biophysica Acta. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1947- Volume(issue)/page/year: 696,179,1982
Precursor  1

DownStream  0


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