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38996-55-3

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38996-55-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 38996-55-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,8,9,9 and 6 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 38996-55:
(7*3)+(6*8)+(5*9)+(4*9)+(3*6)+(2*5)+(1*5)=183
183 % 10 = 3
So 38996-55-3 is a valid CAS Registry Number.

38996-55-3Relevant articles and documents

Deamination Reactions, 39. Decomposition of 1-Methylnorbornane-2-diazonium Ions

Banert, Klaus,Kirmse, Wolfgang,Wroblowsky, Heinz-Juergen

, p. 3591 - 3610 (2007/10/02)

Nitrous acid deaminations of 1-methyl-exo-2-norbornylamine (19) and of the epimeric 2-methyl-2-norbornylamines (32, 34) in water yielded endo-2-methyl-exo-2-norbornanol (42a) exclusively.In contrast, 1-methyl-endo-2-norbornylamine (23) afforded 2-methylbicycloheptan-2-ol (13a, 20percent) and 1-methyl-endo-2-norbornanol (14a, 17percent) in addition to 42a.The formation of bicycloheptyl derivatives 13 is accentuated by better nucleophiles, as shown by photolyses of 1-methyl-2-norbornanone tosylhydrazone (35) in methanol/methoxide, and in the presence of lithium azide. 14 and (in part) 13 are thought to originate from 7-bridged 1-methylnorbornyl cations (10).A substantial fraction of 13 stems from the open 2-methylbicycloheptyl cation (12).The contributions of 10 and 12 have been elucidated by means of 3-D2 labels.Introduction of an exo-3-methyl group (48, 50) enhances participation of the C-1 - C-7 bond.Cations 57 and 61 are the predominant intermediates generated from 1,exo-3-dimethylnorbornane-endo-2-diazonium ions (53).Less polar solvents (acetic acid, 2-ethylhexanoic acid) induce variations in product distribution which are attributed to increasing solvolytic displacement (ks) and ion pair collapse.

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