NB-598 free base

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MedKoo CAT#: 555800

CAS#: 131060-14-5 (free base)

Description: NB-598 is a potent competitive inhibitor of squalene epoxidase (SE). NB-598 suppresses triglyceride biosynthesis through the farnesol pathway. NB-598 suppresses the secretion of cholesterol and triacylglycerol and simultaneously reduces apolipoprotein B in HepG2 cells. NB-598 reduced basolaterally secreted radioactivity in cholesterol, cholesterol ester, PL and TG. Furthermore, NB-598 suppressed the basolateral secretion of apolipoprotein (apo) B. When microsomes prepared from control Caco-2 cells were incubated with 10 microM NB-598, acyl CoA:cholesterol acyltransferase (ACAT) activity was inhibited slightly.

Price and Availability

Size Price Shipping out time Quantity
50mg USD 950 2 Weeks
100mg USD 1650 2 Weeks
200mg USD 2650 2 Weeks
500mg USD 3050 2 Weeks
1g USD 4250 2 Weeks
2g USD 6450 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2020-09-29. Prices are subject to change without notice.

NB-598 free base is in stock

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 555800
Name: NB-598 free base
CAS#: 131060-14-5 (free base)
Chemical Formula: C27H31NOS2
Exact Mass: 449.1847
Molecular Weight: 449.671
Elemental Analysis: C, 72.12; H, 6.95; N, 3.11; O, 3.56; S, 14.26

Related CAS #: 131060-14-5 (free base)   136719-25-0 (HCl)    

Synonym: NB-598 free base; NB-598; NB 598; NB598;

IUPAC/Chemical Name: (E)-N-ethyl-6,6-dimethyl-N-[[3-[(4-thiophen-3-ylthiophen-2-yl)methoxy]phenyl]methyl]hept-2-en-4-yn-1-amine


InChi Code: InChI=1S/C27H31NOS2/c1-5-28(14-8-6-7-13-27(2,3)4)18-22-10-9-11-25(16-22)29-19-26-17-24(21-31-26)23-12-15-30-20-23/h6,8-12,15-17,20-21H,5,14,18-19H2,1-4H3/b8-6+


Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>3 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


1: Horie M, Iwasawa Y, Satoh T, Shimizu A, Nagata Y, Kamei T. Effects of NB-598, a potent squalene epoxidase inhibitor, on the apical membrane uptake of cholesterol and basolateral membrane secretion of lipids in Caco-2 cells. Biochem Pharmacol. 1993 Jul 20;46(2):297-305. doi: 10.1016/0006-2952(93)90418-v. PMID: 8347152.

2: Horie M, Hayashi M, Satoh T, Hotta H, Nagata Y, Ishida F, Kamei T. An inhibitor of squalene epoxidase, NB-598, suppresses the secretion of cholesterol and triacylglycerol and simultaneously reduces apolipoprotein B in HepG2 cells. Biochim Biophys Acta. 1993 May 20;1168(1):45-51. PMID: 8504141.

3: Nagata Y, Horie M, Hidaka Y, Yonemoto M, Hayashi M, Watanabe H, Ishida F, Kamei T. Effect of an inhibitor of squalene epoxidase, NB-598, on lipid metabolism in Hep G2 cells. Chem Pharm Bull (Tokyo). 1992 Feb;40(2):436-40. doi: 10.1248/cpb.40.436. PMID: 1606641.

4: Hidaka Y, Hotta H, Nagata Y, Iwasawa Y, Horie M, Kamei T. Effect of a novel squalene epoxidase inhibitor, NB-598, on the regulation of cholesterol metabolism in Hep G2 cells. J Biol Chem. 1991 Jul 15;266(20):13171-7. PMID: 1649182.

5: Horie M, Sawasaki Y, Fukuzumi H, Watanabe K, Iizuka Y, Tsuchiya Y, Kamei T. Hypolipidemic effects of NB-598 in dogs. Atherosclerosis. 1991 Jun;88(2-3):183-92. doi: 10.1016/0021-9150(91)90080-m. PMID: 1892485.

6: Horie M, Tsuchiya Y, Hayashi M, Iida Y, Iwasawa Y, Nagata Y, Sawasaki Y, Fukuzumi H, Kitani K, Kamei T. NB-598: a potent competitive inhibitor of squalene epoxidase. J Biol Chem. 1990 Oct 25;265(30):18075-8. PMID: 2211682.