1049748-91-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1049748-91-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,4,9,7,4 and 8 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1049748-91:
(9*1)+(8*0)+(7*4)+(6*9)+(5*7)+(4*4)+(3*8)+(2*9)+(1*1)=185
185 % 10 = 5
So 1049748-91-5 is a valid CAS Registry Number.
1049748-91-5Relevant articles and documents
Practical preparation of 2-halomethyl-allyl carboxylates
Sun, Chong-Si,Cheng, Hsiu-Yi,Lin, Yu-Shiang,Hou, Duen-Ren
, p. 435 - 438 (2008)
An improved, efficient preparation of 2-(halomethyl)allyl carboxylates starting from diethyl bis(hydroxymethyl) malonate and hydrobromic acid is reported. The allylic halogen of 2-(chloromethyl)acrylate and 2-(bromomethyl)acrylate are readily exchanged during esterification.
