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140367-33-5

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140367-33-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140367-33-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,3,6 and 7 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 140367-33:
(8*1)+(7*4)+(6*0)+(5*3)+(4*6)+(3*7)+(2*3)+(1*3)=105
105 % 10 = 5
So 140367-33-5 is a valid CAS Registry Number.

140367-33-5Downstream Products

140367-33-5Relevant articles and documents

AMINOMETHYLATION OF N,N'- AND N,N,N'-SUBSTITUTED UREAS BY N-METHYLENE-tert-BUTYLAMINE

Kovalenko, A. L.,Serov, Yu. V.,Nikonov, A. A.,Tselinskii, I. V.

, p. 1835 - 1837 (2007/10/02)

The reaction of 1,3-substituted ureas with N-methylene-tert-butylamine in the absence of a solvent proceeds via mechanism of the Mannich type to give 1-R1-3-R2-5-tert-butyl-3,4,5,6-tetrahydro-1,3,5-triazin-2-ones and tert-butylamine. 1,1,3-Substituted ureas do not react with N-methylene-tert-butylamine as a consequence of the steric hindrance created by the tert-butyl grouping to obtaining the key iminium salt.

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