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117648-74-5

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117648-74-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117648-74-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,4 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 117648-74:
(8*1)+(7*1)+(6*7)+(5*6)+(4*4)+(3*8)+(2*7)+(1*4)=145
145 % 10 = 5
So 117648-74-5 is a valid CAS Registry Number.

117648-74-5Upstream product

117648-74-5Downstream Products

117648-74-5Relevant articles and documents

Bridged Hydroquinolines

Balasubrahmanyam, S. N.,Jeyashri, B.

, p. 559 - 562 (2007/10/02)

The pyridannulation procedure of condensing vinamidinium salts with ketones having a free α-methylene has been adapted to prepare 3-substituted 5,6,7,8-tetrahydroquinolines; characterization data for the seven systems synthesized are reported.Conditions required are less drastic than those for recently reported alternative approaches to analogous systems.The adaption has considerable generality even though 5,8-methano-bridged 5,6,7,8-tetrahydroquinolines are not accessible through it.Chirality in the starting ketone, not affected by exposure to enolizing conditions, is preserved in the pyridannulated products.

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