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137570-69-5

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137570-69-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137570-69-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,7 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 137570-69:
(8*1)+(7*3)+(6*7)+(5*5)+(4*7)+(3*0)+(2*6)+(1*9)=145
145 % 10 = 5
So 137570-69-5 is a valid CAS Registry Number.

137570-69-5Relevant articles and documents

A Facile Preparation of N-(Isopropoxyalkyl) Amides by Generation and Trapping of N-Acyliminium Ions from Ionization-Rearrangement Reactions of N-Triflyloxy Amides

Hoffman, Robert V.,Nayyar, Naresh K.

, p. 3530 - 3539 (2007/10/02)

A series of hydroxamic acids were converted to N-triflyloxy amides which were heated in 2-propanol to give N-(1-isopropoxyalkyl) amides in high yields.The method is simple, direct, and extremely tolerant of structural diversity both in the N-acyl group, a

N-amides, Versatile Amidoalkylation Reagents. 5. A General and Convenient Route to N-(α-Alkoxyalkyl)amides

Katritzky, Alan R.,Fan, Wei-Qiang,Black, Michael,Pernak, Juliusz

, p. 547 - 549 (2007/10/02)

N-amides 2, easily prepared from benzotriazole 1, an aldehyde, and an amide, react readily with a variety of primary and secondary alcohols under mild conditions to give N-(α-alkoxyalkyl)amides 3 in good yield.

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