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80371-87-5

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80371-87-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80371-87-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,3,7 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 80371-87:
(7*8)+(6*0)+(5*3)+(4*7)+(3*1)+(2*8)+(1*7)=125
125 % 10 = 5
So 80371-87-5 is a valid CAS Registry Number.

80371-87-5Relevant articles and documents

Rigid core vinamidinium salts and their N,N′-rotamers

Ostercamp, Daryl L.,Dinh, Yen,Graff, David,Wiles, Sarah

, p. 3099 - 3105 (2003)

The power of proton magnetic resonance spectroscopy to unravel stereochemical details is amply demonstrated. O-Methylation of 3-methylamino-5,5-dimethyl-2-cylohexen-1-one (1a) produces stable diastereomers, (Z)- and (E)-N-(3-methoxy-5,5-dimethyl-2-cyclohexen-1-ylidine)-N-methylaminium iodide (2a). As predicted by computation and confirmed by spectroscopy, the (Z)-vinylogous imidate salt predominates. Reaction of 2a with primary and secondary amines furnished a number of vinamidinium salts, including N-(3-methylamino-5,5-dimethyl-2-cyclohexen-1-ylidene)-N-methylaminium iodide (3a). Two rotamers of 3a were identified and characterized. A substantial number of additional compounds 2 and 3 are included in the study.

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