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170235-95-7

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170235-95-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170235-95-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,2,3 and 5 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 170235-95:
(8*1)+(7*7)+(6*0)+(5*2)+(4*3)+(3*5)+(2*9)+(1*5)=117
117 % 10 = 7
So 170235-95-7 is a valid CAS Registry Number.

170235-95-7Relevant articles and documents

Reaction of methyl 4,5-epoxy-(2E)-pentenoate with arenes. II. Application to the synthesis of(±)-curcudiol, (±)-curcuphenol, (±)-curcuhydroquinone, and(±)-curcuquinone

Ono,Yamamoto,Akita

, p. 553 - 558 (2007/10/02)

Four bisabolane sesquiterpenes, (±)-curcudiol (2), (±)-curcuphenol (3), (±)-curcuhydroquinone (5) and (±)-curcuquinone (6), were synthesized based on the reaction of methyl 4,5-epoxy-(2E)-pentenoate (1) with methoxytoluenes in the presence of boron trifluoride etherate.

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