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666738-07-4

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666738-07-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 666738-07-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,6,7,3 and 8 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 666738-07:
(8*6)+(7*6)+(6*6)+(5*7)+(4*3)+(3*8)+(2*0)+(1*7)=204
204 % 10 = 4
So 666738-07-4 is a valid CAS Registry Number.

666738-07-4Relevant articles and documents

The Vilsmeier-Haack reaction on methyl homologues of N-benzyltetrahydrocarbazole (synthetic studies on indoles 52)

Murakami, Yasuoki,Ishii, Akira,Ozawa, Hidehiko,Okahira, Hiroko,Hosokawa, Keiko,Tashiro, Tomiko,Muto, Jin-Ichi,Suzuki, Hideharu,Tani, Masanobu,Yokoyama, Yuusaku

, p. 225 - 235 (2007/10/03)

To examine the steric effect in the Vilsmeier-Haack reaction of N-benzyl-1,2,3,4-tetrahydrocarbazole (1), the reactions were carried out on three methyl homologues of 1. It was found that 1-methyl- or 4,4-dimethyl group has a large effect on reactivity du

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