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1187759-64-3

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1187759-64-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1187759-64-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,7,7,5 and 9 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1187759-64:
(9*1)+(8*1)+(7*8)+(6*7)+(5*7)+(4*5)+(3*9)+(2*6)+(1*4)=213
213 % 10 = 3
So 1187759-64-3 is a valid CAS Registry Number.

1187759-64-3Relevant academic research and scientific papers

Ultrasound-assisted Wittig reaction: A short, efficient synthesis of 2-methoxy-6-alkyl-1,4-benzoquinones

Wu, Li-Qiang,Yang, Chun-Guang,Yang, Li-Ming,Yang, Li-Juan

experimental part, p. 47 - 50 (2010/04/05)

A short, efficient synthesis of 2-methoxy-6-alkyl-1,4-benzoquinones is described. Ultrasound-assisted Wittig reaction of alkyltriphenyl phosphonium bromides with o-vanillin in basic aqueous conditions followed by reduction with Na/n-BuOH gave 2-methoxy-6-alkylphenols. Oxidation of 2-methoxy-6-alkylphenols with Fremy's salt produced the title compounds.

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