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3-chloro-1-methyl-9H-pyrido[3,4-b]indole is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

18203-05-9

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18203-05-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18203-05-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,2,0 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 18203-05:
(7*1)+(6*8)+(5*2)+(4*0)+(3*3)+(2*0)+(1*5)=79
79 % 10 = 9
So 18203-05-9 is a valid CAS Registry Number.

18203-05-9Upstream product

18203-05-9Downstream Products

18203-05-9Relevant academic research and scientific papers

Identification of co-mutagenic chlorinated harmans in final effluent from a sewage treatment plant

Fukazawa, Hitoshi,Matsushita, Hidetsuru,Terao, Yoshiyasu

, p. 65 - 70 (2001)

Harman (1-methyl-9H-pyrido[3,4-b]indole) reacted readily with sodium hypochlorite in an aqueous medium to give the mono-chlorinated derivatives, which reportedly have greater co-mutagenic activity than harman in the presence of o-toluidine toward Salmonella typhimurium TA 98 with S9 mix. Mono-chlorinated harmans were detected by concentration using blue rayon (BR) and GC/MS analysis in the final effluent from a sewage treatment plant in Shizuoka, Japan. The amounts adsorbed for 24h were 1-45ng/gBR for mono-chlorinated harman and 110-730ng/gBR for harman.

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