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223576-76-9

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223576-76-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223576-76-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,5,7 and 6 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 223576-76:
(8*2)+(7*2)+(6*3)+(5*5)+(4*7)+(3*6)+(2*7)+(1*6)=139
139 % 10 = 9
So 223576-76-9 is a valid CAS Registry Number.

223576-76-9Upstream product

223576-76-9Downstream Products

223576-76-9Relevant articles and documents

Efficient and regioselective one-pot synthesis of 3-substituted and 3,5-disubstituted isoxazoles

Tang, Shibing,He, Jinmei,Sun, Yongquan,He, Liuer,She, Xuegong

, p. 3982 - 3985 (2009)

(Figure Presented) A series of 3-substituted and 3,5-disubstituted isoxazoles have been efficiently synthesized in moderate to excellent yields by the reaction of N-hydroxyl-4-toluenesulfonamide with α,β-unsaturated aldehydes/ketones. This novel strategy is associated with readily available starting materials, mild conditions, high regioselectivity, and wide scope.

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