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Protecting Reagents

Protecting reagents are utilized to attach protecting groups to reactive functional groups in building blocks and intermediates to prevent unwanted side reactions, which are widely applied in organic reactions for producing peptides, sugars, nucleotides, terpenes, alkaloids and a large number of other chemicals.

J&K provides a wide range of protecting agents not only with conventional protecting groups (e.g. TMS, Boc, trityl), but also the novel ones like 1,2-bis(chlorodimethylsilyl)ethane (Cat. No.170393), which reacts only with aliphatic primary amines to generate azadisilacyclopentane derivatives.

structure Product no. description cas pricing
279787 Allyl bromide, 98% 106-95-6 Pricing
410620 Allyl chloroformate, 98% 2937-50-0 Pricing
199896 p-Anisaldehyde, 99% 123-11-5 Pricing
520318 Benzyl bromide, 97% 100-39-0 Pricing
171375 Benzyl carbazate, 98% 5331-43-1 Pricing
994323 Benzyl chloride, 99% 100-44-7 Pricing
283749 Benzyl chloroformate, 97%, J&KSeal 501-53-1 Pricing
227784 N-(Benzyloxycarbonyloxy)succinimide, 99% 13139-17-8 Pricing
208367 Bromidetriphenylmethane, 98% 596-43-0 Pricing
366373 2-Bromoacetophenone, 99% 70-11-1 Pricing
436875 2-tert-Butoxycarbonyloxyimino-2-phenylacetonitrile, 99% 58632-95-4 Pricing
242214 tert-Butyl carbazate, 99% 870-46-2 Pricing
236144 tert-Butyldimethylchlorosilane, 99% 18162-48-6 Pricing
218454 tert-Butyldimethylsilyl trifluoromethanesulfonate, 98% 69739-34-0 Pricing
412200 2-Chloroethyl ethyl ether, 98% 628-34-2 Pricing
294426 Chloromethyl ethyl ether, 80% 3188-13-4 Pricing
212710 Chlorotriethylsilane, 99% 994-30-9 Pricing
458784 Chlorotrimethylsilane, 99%, J&KSeal 75-77-4 Pricing
216817 1,3-Dichloro-1,1,3,3-tetraisopropyldisiloxane, 97% 69304-37-6 Pricing
176388 Diethyl carbonate, 99%, anhydrous 105-58-8 Pricing
391472 3,4-Dihydro-2H-pyran, 98% 110-87-2 Pricing
157348 2,4-Dimethoxybenzaldehyde, 98% 613-45-6 Pricing
101363 2,2-Dimethoxypropane, 98% 77-76-9 Pricing
284114 4,4'-Dimethoxytriphenylmethyl chloride, 98% 40615-36-9 Pricing
572273 Ethanesulfonyl chloride, 98% 594-44-5 Pricing
243179 N-(9-Fluorenylmethoxycarbonyloxy)succinimide, 98% 82911-69-1 Pricing
277506 9-Fluorenylmethyl carbamate, 98% 84418-43-9 Pricing
197308 9-Fluorenylmethyl chloroformate, 98% 28920-43-6 Pricing
155748 4-Methoxybenzenesulfonyl chloride, 99% 98-68-0 Pricing
400128 4-Methoxybenzyl chloride, 98%, contains potassium carbonate as stabilizer 824-94-2 Pricing
402753 2-Methoxyethoxymethyl chloride, 94% 3970-21-6 Pricing
228224 4-Methoxytrityl chloride, 98% 14470-28-1 Pricing
603426 4-Nitrobenzyl bromide, 99% 100-11-8 Pricing
278823 4-Nitrophenyl chloroformate, 98% 7693-46-1 Pricing
284575 1,3-Propanedithiol, 98% 109-80-8 Pricing
932144 Propylene glycol, 99.8% 57-55-6 Pricing
283322 p-Toluenesulfonyl chloride, 99% 98-59-9 Pricing
219760 Triisopropylchlorosilane, 97% 13154-24-0 Pricing
318458 2,4,6-Trimethylbenzenesulfonyl chloride, 99% 773-64-8 Pricing
193079 Trimethyl orthoformate, 99% 149-73-5 Pricing
533891 (Trimethylsilyl)diazomethane, 2.0 M solution in hexanes 18107-18-1 Pricing
264281 Trimethylsilyl trifluoromethanesulfonate, 99% 27607-77-8 Pricing
171149 Trityl chloride, 99% 76-83-5 Pricing