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57636-52-9

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57636-52-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57636-52-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,3 and 6 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 57636-52:
(7*5)+(6*7)+(5*6)+(4*3)+(3*6)+(2*5)+(1*2)=149
149 % 10 = 9
So 57636-52-9 is a valid CAS Registry Number.

57636-52-9Upstream product

57636-52-9Downstream Products

57636-52-9Relevant articles and documents

Applications of Two-Dimensional NMR in Spectral Assignments of Some Friedelanes and Secofriedelanes

Patra, Amarendra,Chaudhuri, Swapan K.,Acharyya, Aditi K.

, p. 85 - 89 (1990)

Carbon-13 spectral assignments of three friedelanes and nineteen secofriedelanes have been made from mutual correlations, 2D X-H correlation analyses and comparison with the carbon shifts of friedelin, which were firmly established by an INADEQUATE experiment that required reassignment of some of its resonances.Specific methyl and methine proton resonance assignments for some friedelanes, established from X-H correlation studies, are also reported.

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