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223503-57-9

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223503-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223503-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,5,0 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 223503-57:
(8*2)+(7*2)+(6*3)+(5*5)+(4*0)+(3*3)+(2*5)+(1*7)=99
99 % 10 = 9
So 223503-57-9 is a valid CAS Registry Number.

223503-57-9Relevant articles and documents

Pheromones of insects and their analogs. LIII. Synthesis of ferrulactone I -a pheromone of cryptolestes ferrugineus

Kukovinets,Odinokov,Tsyglintseva, E. Yu,Tolstikov

, p. 909 - 911 (2007/10/03)

8-Acetoxy-3, 7-dimethyl-l-(phenylsulfonylacetoxy)octa-2E, 6E-diene has been synthesized, and its cyclization under the action of zero valent palladium followed by desulfurization with the aid of sodium amalgam has led to ferrulactone I - one of the macrolide components of the aggregation pheromone of the rust-red grain beetle (Cryptolestes ferrugineus).

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