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175154-41-3

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175154-41-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 175154-41-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,1,5 and 4 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 175154-41:
(8*1)+(7*7)+(6*5)+(5*1)+(4*5)+(3*4)+(2*4)+(1*1)=133
133 % 10 = 3
So 175154-41-3 is a valid CAS Registry Number.

175154-41-3Relevant articles and documents

Resin-immobilised benzyl and aryl vinyl sulfones: New versatile traceless linkers for solid-phase organic synthesis

Kroll, Friedrich E. K.,Morphy, Richard,Rees, David,Gani, David

, p. 8573 - 8576 (1997)

New polystyrene-based resins containing benzyl and aryl vinyl sulfone groups are described. The vinyl sulfone group reacts efficiently with 2°amines, via conjugate addition, and the resin-bound 3°amines products can be quaternised through alkylation. Subsequent deamination to give 3°amines and the regenerated vinyl sulfone occurs in moderate to good yield. Both systems can be recycled and show moderate stability to acids and high stability to nucleophiles including Grignard reagents.

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