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1233731-18-4

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1233731-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233731-18-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,7,3 and 1 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1233731-18:
(9*1)+(8*2)+(7*3)+(6*3)+(5*7)+(4*3)+(3*1)+(2*1)+(1*8)=124
124 % 10 = 4
So 1233731-18-4 is a valid CAS Registry Number.

1233731-18-4Downstream Products

1233731-18-4Relevant articles and documents

Transition-metal-free multinitrogenation of amides by C-C bond cleavage: A new approach to tetrazoles

Li, Lian-Hua,Li, Ying-Xiu,Liang, Yong-Min,Niu, Zhi-Jie

supporting information, p. 11148 - 11151 (2020/04/22)

A metal-free brand-new one-pot multinitrogenation of amides for the chemo- A nd regioselective synthesis of 1,5-disubstituted tetrazoles has been developed. By means of electrophilic amide activation, and further C-C bond cleavage and rearrangement, a diverse set of functionalized 1,5-DST derivatives were selectively constructed under mild conditions. As showcased in the mechanisms, the chemoselectivity is easily switched by the selection of the starting materials in the reaction.

Synthesis of 1,5-disubstituted tetrazoles via Suzuki-Miyaura cross-coupling of 5-chloro-1-phenyltetrazole

Tang, Qing,Gianatassio, Ryan

experimental part, p. 3473 - 3476 (2010/08/20)

Suzuki-Miyaura coupling reactions of 5-chloro-1-phenyl-tetrazole with various functionalized arylboronic acids were investigated. In the presence of catalytic amounts of SPhos/Pd(OAc)2 or RuPhos/Pd(OAc)2, the reaction proceeded smoot

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