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149208-91-3

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149208-91-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149208-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,2,0 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 149208-91:
(8*1)+(7*4)+(6*9)+(5*2)+(4*0)+(3*8)+(2*9)+(1*1)=143
143 % 10 = 3
So 149208-91-3 is a valid CAS Registry Number.

149208-91-3Downstream Products

149208-91-3Relevant articles and documents

Darstellung eines (Diphenylverdazylylphenyl)propargylethers

Dulog, Lothar,Breitenbuecher, Joachim

, p. 201 - 202 (2007/10/02)

2,4-Diphenyl-6-verdazyl (6) has been synthesized by the reaction of 4-hydroxybenzaldehyde with propargyl bromide, phenylhydrazine and phenyldiazonium chloride.The corresponding formazane yields with formaldehyde after air oxidation the stable radical. Key Words: Verdazyl/Radicals, stable/Propargyl ethers/1,2,4,5-Tetrazines.

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