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50902-98-2

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50902-98-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 50902-98-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,0,9,0 and 2 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 50902-98:
(7*5)+(6*0)+(5*9)+(4*0)+(3*2)+(2*9)+(1*8)=112
112 % 10 = 2
So 50902-98-2 is a valid CAS Registry Number.

50902-98-2Relevant articles and documents

Photochemistry of Cyclopropene Derivatives. 34. Photocycloaddition Reactions of 2-Alkenyl-Substituted Cyclopropenes

Padwa, Albert,Krumpe, Keith E.,Terry, Lenny W.,Wannamaker, M. Woods

, p. 1635 - 1642 (2007/10/02)

The sensitized irradiation of 2-(4-pentenyl)-substituted cyclopropenes produces tricyclo1,3>octanes by means of novel intramolecular cycloaddition.In dramatic contrast to the photochemical results, thermolysis affords a product co

Thermolysis of Vinyldiazomethanes as a Method for the Generation of Vinylcarbenes and a Comparison with Cyclopropene Photochemistry

Pincock, James A.,Mathur, Naresh C.

, p. 3699 - 3706 (2007/10/02)

The pyrolysis of the vinyldiazomethanes 6 (X = H), 8, 9, and 10 gives mixtures of 3H-pyrazoles and cyclopropenes.The kinetics and product distribution for each case lead to a determination of the rate of vinylcarbene formation and, therefore, a direct determination of the relative carbene stabilities.The conclusion is that carbene 14 is more stable than 15.These results are then used as a basis for a discussion of the carbenes generated from the singlet photochemistry of unsymmetrical cyclopropenes, 11.

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