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4003-98-9

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4003-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4003-98-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,0 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4003-98:
(6*4)+(5*0)+(4*0)+(3*3)+(2*9)+(1*8)=59
59 % 10 = 9
So 4003-98-9 is a valid CAS Registry Number.

4003-98-9Downstream Products

4003-98-9Relevant articles and documents

Aromatic alkenylation using electrophilic organogallium reagent generated from allenylsilane and GaCl3

Kido, Yoshiyuki,Yonehara, Fumi,Yamaguchi, Masahiko

, p. 827 - 833 (2007/10/03)

Aromatic hydrocarbons are alkenylated with silylallene in the presence of GaCl3 at -90°C. Organometallic electrophiles generated from the allene and GaCl3 are the active species in this reaction. A modest level of ortho-selectivity is observed. While the silylallene reacts exclusively at the 2-position, 1,2-alkadiene reacts at the 1-position predominantly.

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