4808-70-2 Usage
General Description
5-Methylpyridine-3-sulfonic acid is a chemical compound with the molecular formula C6H7NO3S. It is a derivative of pyridine with a sulfonic acid group attached to the third carbon atom and a methyl group attached to the fifth carbon atom. 5-Methylpyridine-3-sulfonic acid is often used as a reagent in organic synthesis and as a building block for the preparation of various pharmaceuticals and agrochemicals. It is also used as a catalyst in certain chemical reactions, as well as in the production of dyes and pigments. 5-Methylpyridine-3-sulfonic acid is a white to light yellow crystalline solid that is soluble in water and common organic solvents. It is important to handle this compound with care, as it is corrosive and can cause irritation to the skin, eyes, and respiratory system if not properly handled.
Check Digit Verification of cas no
The CAS Registry Mumber 4808-70-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,0 and 8 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4808-70:
(6*4)+(5*8)+(4*0)+(3*8)+(2*7)+(1*0)=102
102 % 10 = 2
So 4808-70-2 is a valid CAS Registry Number.
4808-70-2Relevant articles and documents
Utilizing Carbonyl Coordination of Native Amides for Palladium-Catalyzed C(sp3)?H Olefination
Park, Hojoon,Li, Yang,Yu, Jin-Quan
supporting information, p. 11424 - 11428 (2019/07/17)
PdII-catalyzed C(sp3)?H olefination of weakly coordinating native amides is reported. Three major drawbacks of previous C(sp3)?H olefination protocols, 1) in situ cyclization of products, 2) incompatibility with α-H-containing substrates, and 3) installation of exogenous directing groups, are addressed by harnessing the carbonyl coordination ability of amides to direct C(sp3)?H activation. The method enables direct C(sp3)?H functionalization of a wide range of native amide substrates, including secondary, tertiary, and cyclic amides, for the first time. The utility of this process is demonstrated by diverse transformations of the olefination products.
