Cyclo(D-alpha-aspartyl-L-prolyl-D-valyl-L-leucyl-D-tryptophyl)

BGC Id:	326392815480
CAS No:	136553-81-6
Synonyms:	m.w. 610.70 c31h42n6o7 ; bq-518 ; eta-receptor antagonist ; cyclo(trp-asp-pro-val-leu) ; bq-123 ; d-trp-d-asp-pro-d-val-leu ; cyclo(-d-trp-d-asp-pro-d-val-leu) ; bq-123 sodium salt ; cyclo(d-asp-pro-d-val-leu-d-trp) ; c(dtrp-dasp-pro-dval-leu)
Molecular Formula:	C31H42N6O7
Molecular Weight:	610.71
EINECS:

Verified providers in 2026

The following notable provider has been checked and can be recommended.

Dayang Chem (Hangzhou) Co.,Ltd.

Company type: Leading producer

Phone: +86-571-88938639
Telefax: +86-571-8893-8652
Country: P.R.China

Hangzhou DayangChem Co. Ltd is a comprehensive entity which specializes in development, production and trade of pharmaceutical, agrochemical and dyestuff intermediates as well as some special type reagents. We are seller of 3-Amino-4-bromo-6-chloropyridazine. We have an own factory and share enterprises. We act also as agent of many chemical factories and promote their products to the international m ...

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What other providers are available for CAS 136553-81-6?

The last intensive check and update was carried out on 2026/03/01.

Identify

Synonyms:

m.w. 610.70 c31h42n6o7 ; bq-518 ; eta-receptor antagonist ; cyclo(trp-asp-pro-val-leu) ; bq-123 ; d-trp-d-asp-pro-d-val-leu ; cyclo(-d-trp-d-asp-pro-d-val-leu) ; bq-123 sodium salt ; cyclo(d-asp-pro-d-val-leu-d-trp) ; c(dtrp-dasp-pro-dval-leu)

CAS:

136553-81-6

EINECS:

Molecular Formula:

C31H42N6O7

MDL:

MFCD00133204

Properties

Molecular Weight:

610.71 g·mol−1

Safety Information

Hazard Classes:

Safety Codes:

22-24/25 (S)

WGK Germany:

Storage temperature:

-20°C

What other providers are available for CAS 136553-81-6?

In addition to the providers presented here for Cyclo(D-alpha-aspartyl-L-prolyl-D-valyl-L-leucyl-D-tryptophyl) with the CAS number 136553-81-6, there are other 17 providers with slightly different product names available for this CAS number.

BQ-123

Amadis Chemical Company Limited | BIOZOL Diagnostica Vertrieb GmbH +6 additional providers that we know from the past

Bq-123 sodium salt

Leap Chem Co., Ltd +1 additional providers that we know from the past

Cyclo(D-asp-pro-D-val-leu-D-trp)

+1 additional providers that we know from the past

Cyclo(-D-Trp-D-Asp-Pro-D-Val-Leu)

+4 additional providers that we know from the past

ETA-Receptor Antagonist [BQ-123] sodium salt

+1 additional providers that we know from the past

2-((3R,6S,9R,12R,17aS)-9-((1H-indol-3-yl)methyl)-6-isobutyl-3-isopropyl-1,4,7,10,13-pentaoxohexadecahydro-1H-pyrrolo[1,2-a][1,4,7,10,13]pentaazacyclopentadecin-12-yl)acetic acid

+1 additional providers that we know from the past