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61936-09-2

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61936-09-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 61936-09-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,9,3 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 61936-09:
(7*6)+(6*1)+(5*9)+(4*3)+(3*6)+(2*0)+(1*9)=132
132 % 10 = 2
So 61936-09-2 is a valid CAS Registry Number.

61936-09-2Relevant articles and documents

STEREOCHEMICAL STUDIES, 144. SATURATED HETEROCYCLES, 151. PREPARATION OF cis AND trans-CYCLOALKANE-CONDENSED PYRIMIDINEDIONES BY AZETIDINONE RING TRANSFORMATION

Stajer, Geza,Szoeke-Molnar, Zsolt,Bernath, Gabor,Sohar, Pal

, p. 1943 - 1950 (2007/10/02)

N-substituted derivatives (3 and 4) obtained from cyclopentane- and cyclohexane-azetidinones (1 and 2) were isomerized with polyphosphoric acid to give cyclopentane-cis- (6) and cyclohexane-trans-condensed (7) 2,4-pyrimidinediones.The structures of the dihydrouracils prepared by the ring transformation were proved by 1H- and 13C-nmr spectroscopy and by comparison with the compounds synthesized from cis- and trans-2-amino-1-cycloalkanecarboxamides (11-13) with 1,1'-carbonyldiimidazole.

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