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133828-13-4

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133828-13-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133828-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,2 and 8 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 133828-13:
(8*1)+(7*3)+(6*3)+(5*8)+(4*2)+(3*8)+(2*1)+(1*3)=124
124 % 10 = 4
So 133828-13-4 is a valid CAS Registry Number.

133828-13-4Downstream Products

133828-13-4Relevant articles and documents

POLYSUBSTITUTED 4-PIPERIDONES AND 4-PIPERIDOLS: SYNTHESIS AND SPATIAL CONFIGURATION

Belostotskii, A. M.,Shapiro, A. B.

, p. 421 - 429 (1991)

Triacetonamine was used to synthesize a series of highly substituted 4-piperidones and 4-piperidols.The spatial configuration of these compounds was determined.The anionoid addition to the carbonyl group of these piperidones proceeds through highly stereoselective equatorial attack.The position of the chair-chair-twist conformational equilibrium was determined for the polysubstituted 4-piperidols.

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