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216174-33-3

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216174-33-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 216174-33-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,1,7 and 4 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 216174-33:
(8*2)+(7*1)+(6*6)+(5*1)+(4*7)+(3*4)+(2*3)+(1*3)=113
113 % 10 = 3
So 216174-33-3 is a valid CAS Registry Number.

216174-33-3Relevant articles and documents

An Oxy-Cope Approach to Hydroazulenoids. Synthetic and Mechanistic Aspects of Thermal Cyclization Reactions

Sworin, Michael,Lin, Ko-Chung

, p. 1815 - 1825 (1989)

The synthesis and thermal properties of C5-substituted oxy-Cope substrates are reported.In the trans-divinylcyclohexanol series, halomethyl substituents provided > 80percent isolated yield of the thermodynamically less stable cis-hydroazulenone 33 from ei

Phenol catalyzed Claisen ortho ester rearrangment of allylic alcohols with trimethyl-β-(methoxy) ortho propionate

Iqbal, Fazila,Ateeq, Humayun S.,Malik, Abdul,Zeeshan,Ali, Zulfiqar

, p. 1244 - 1245 (2007/10/03)

Phenol catalyzed Claisen ortho ester rearrangment of allylic alcohols with trimethyl-β-(methoxy) ortho propionate can be affected in relatively quick time and lower temperature with only 1.5 equivalents of ortho ester. The rearrangement does not experience undesirable side reactions reported earlier in literature [3].

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