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1011832-55-5

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1011832-55-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1011832-55-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,1,8,3 and 2 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1011832-55:
(9*1)+(8*0)+(7*1)+(6*1)+(5*8)+(4*3)+(3*2)+(2*5)+(1*5)=95
95 % 10 = 5
So 1011832-55-5 is a valid CAS Registry Number.

1011832-55-5Downstream Products

1011832-55-5Relevant articles and documents

Synthetic utilization of polynitroaromatic compounds. 6. Remarkable regioselectivity in nucleophilic displacement of aromatic nitro groups with amines

Kislyi, Konstantine A.,Samet, Alexander V.,Strelenko, Yuri A.,Semenov, Victor V.

, p. 2285 - 2291 (2008)

(Chemical Equation Presented) 5,7-Dinitroquinazoline-4-ones undergo nucleophilic displacement of a nitro group with N-, S-, and O-nucleophiles. In contrast to previously studied dinitro-substituted benzoannulated five- and seven-membered heterocycles (where a high degree of selectivity was observed), these quinazolines mostly yield mixtures of regioisomeric substitution products. At the same time, primary and secondary amines react selectively to afford 5-aminoquinazolones (peri-substitution). A similar effect is observed for some other polynitroaromatic compounds with adjacent nitro and carbonyl groups. This phenomenon is attributed to a stabilization of the intermediate peri-σ-complex by intramolecular hydrogen bond N+-H...O=C.

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