We sell and supply high quality and purity research chemicals and plant food(Mephedrone)(mdpv) (methylone),in both large and small quantities…below is a list of our products

Mephedrone (4-MMC)
Methylone (bk-MDMA)
Bulytone (bk-MBDB)
MDAI
MDPV
Ketamine hcl crystal powder
MDPV
JWH-018 / JWH-250,JWH-018,JWH-073,JWH-200,JWH-250
JWH-250
TFMPP
2C-E, 2C-I, 2C-P, 2C-C, 2C-T-2
DOC, DOI
TCB-2
5-Meo-DMT
4-Aco-DMT
4-Ho-MIPT
4-Meo-PCP

We have in stock and 100% guaranteed supply. Delivery takes a maximum of 2-3 days workind days via secure air mail. please do contact us below via (kentwinter@live.com)

2-(2-Methoxyphenyl)-1-(1-pentyl-1H-indol-3-yl)ethanone

cas no: 864445-43-2

JWH-250

purity:98%

We are RC manufacturer in China, and can provide many research chemicals.
Parts of our products are as below:

Methylone  186028-79-5
Flephedrone  4-FMC   7589-35-7
Butylone   17762-90-2
Buphedrone  408332-79-6
MDPV   24622-62-6
MDAI   132741-81-2
5-IAI 5-Iodo-2-aminoindan  132367-76-1
6-APDB   152623-93-3
win55,212-2 131543-23-2
Dimethocaine DMC 94-15-5
Naphyrone O-2482 NRG-1  850352-11-3
4-FMP   459-02-9
JWH-018  209414-07-3
JWH-073  208987-48-8
JWH-122  619294-47-2
JWH-250  864445-43-2
JWH-210 824960-64-7

If you need any of them please contact (sales at koson-chem dot com).